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Provided by (Used in) Financing Activities, Discontinued Operations","description":"Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.","units":{"USD":[{"start":"2008-01-01","end":"2008-12-31","val":-360000,"accn":"0001442643-11-000012","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-24"},{"start":"2008-01-01","end":"2008-12-31","val":-360000,"accn":"0001442643-11-000043","fy":2010,"fp":"FY","form":"8-K","filed":"2011-07-29","frame":"CY2008"},{"start":"2009-01-01","end":"2009-12-31","val":-479000,"accn":"0001442643-11-000012","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-24"},{"start":"2009-01-01","end":"2009-12-31","val":-479000,"accn":"0001442643-11-000043","fy":2010,"fp":"FY","form":"8-K","filed":"2011-07-29"},{"start":"2009-01-01","end":"2009-12-31","val":-479000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2009"},{"start":"2010-01-01","end":"2010-06-30","val":0,"accn":"0001442643-10-000050","fy":2010,"fp":"Q2","form":"10-Q/A","filed":"2010-08-05"},{"start":"2010-01-01","end":"2010-12-31","val":0,"accn":"0001442643-11-000012","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-24"},{"start":"2010-01-01","end":"2010-12-31","val":0,"accn":"0001442643-11-000043","fy":2010,"fp":"FY","form":"8-K","filed":"2011-07-29"},{"start":"2010-01-01","end":"2010-12-31","val":0,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2010"},{"start":"2011-01-01","end":"2011-12-31","val":0,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23"},{"start":"2011-01-01","end":"2011-12-31","val":-613000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2011-01-01","end":"2011-12-31","val":-613000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05","frame":"CY2011"},{"start":"2012-01-01","end":"2012-12-31","val":0,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2012-01-01","end":"2012-12-31","val":0,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05"},{"start":"2012-01-01","end":"2012-12-31","val":0,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":3868000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2013-01-01","end":"2013-12-31","val":3868000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":3868000,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":0,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2014"}]}},"CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations":{"label":"Cash Provided by (Used in) Investing Activities, Discontinued Operations","description":"Amount of cash inflow (outflow) of investing activities of discontinued operations. 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This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.","units":{"USD":[{"end":"2009-12-31","val":0,"accn":"0001442643-10-000050","fy":2010,"fp":"Q2","form":"10-Q/A","filed":"2010-08-05"},{"end":"2009-12-31","val":0,"accn":"0001442643-11-000012","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-24","frame":"CY2009Q4I"},{"end":"2010-06-30","val":0,"accn":"0001442643-10-000050","fy":2010,"fp":"Q2","form":"10-Q/A","filed":"2010-08-05","frame":"CY2010Q2I"},{"end":"2010-12-31","val":0,"accn":"0001442643-11-000012","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-24"},{"end":"2010-12-31","val":0,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2010Q4I"},{"end":"2011-12-31","val":0,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23"},{"end":"2011-12-31","val":0,"accn":"0001442643-12-000039","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-26"},{"end":"2011-12-31","val":0,"accn":"0001442643-12-000061","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-07-25"},{"end":"2011-12-31","val":0,"accn":"0000353230-12-000018","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31"},{"end":"2011-12-31","val":0,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19","frame":"CY2011Q4I"},{"end":"2012-03-31","val":0,"accn":"0001442643-12-000039","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-26","frame":"CY2012Q1I"},{"end":"2012-06-30","val":0,"accn":"0001442643-12-000061","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-07-25","frame":"CY2012Q2I"},{"end":"2012-09-30","val":0,"accn":"0000353230-12-000018","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31","frame":"CY2012Q3I"},{"end":"2012-12-31","val":0,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19"},{"end":"2012-12-31","val":0,"accn":"0000353230-13-000030","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-04-24"},{"end":"2012-12-31","val":0,"accn":"0000353230-13-000046","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-24"},{"end":"2012-12-31","val":0,"accn":"0000353230-13-000062","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-23"},{"end":"2012-12-31","val":0,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"end":"2012-12-31","val":0,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05","frame":"CY2012Q4I"},{"end":"2013-03-31","val":0,"accn":"0000353230-13-000030","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-04-24","frame":"CY2013Q1I"},{"end":"2013-06-30","val":0,"accn":"0000353230-13-000046","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-24","frame":"CY2013Q2I"},{"end":"2013-09-30","val":0,"accn":"0000353230-13-000062","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-23","frame":"CY2013Q3I"},{"end":"2013-12-31","val":0,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"end":"2013-12-31","val":0,"accn":"0000353230-14-000031","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-23"},{"end":"2013-12-31","val":0,"accn":"0000353230-14-000053","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-23"},{"end":"2013-12-31","val":0,"accn":"0000353230-14-000063","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-24"},{"end":"2013-12-31","val":0,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05"},{"end":"2013-12-31","val":0,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2013Q4I"},{"end":"2014-03-31","val":0,"accn":"0000353230-14-000031","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-23","frame":"CY2014Q1I"},{"end":"2014-06-30","val":0,"accn":"0000353230-14-000053","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-23","frame":"CY2014Q2I"},{"end":"2014-09-30","val":0,"accn":"0000353230-14-000063","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-24","frame":"CY2014Q3I"},{"end":"2014-12-31","val":0,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25"},{"end":"2014-12-31","val":0,"accn":"0000353230-15-000020","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-29"},{"end":"2014-12-31","val":0,"accn":"0000353230-15-000035","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-24","frame":"CY2014Q4I"},{"end":"2015-03-31","val":0,"accn":"0000353230-15-000020","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-29","frame":"CY2015Q1I"},{"end":"2015-06-30","val":0,"accn":"0000353230-15-000035","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-24","frame":"CY2015Q2I"}]}},"ProceedsFromDivestitureOfBusinesses":{"label":"Proceeds 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Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.","units":{"shares":[{"start":"2010-01-01","end":"2010-12-31","val":4400000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19","frame":"CY2010"},{"start":"2011-01-01","end":"2011-09-30","val":4100000,"accn":"0001442643-11-000055","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-25"},{"start":"2011-01-01","end":"2011-12-31","val":4800000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23"},{"start":"2011-01-01","end":"2011-12-31","val":4800000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19"},{"start":"2011-01-01","end":"2011-12-31","val":4800000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2011-01-01","end":"2011-12-31","val":4800000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05","frame":"CY2011"},{"start":"2012-01-01","end":"2012-03-31","val":700000,"accn":"0001442643-12-000039","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-26","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":2400000,"accn":"0001442643-12-000061","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-07-25"},{"start":"2012-01-01","end":"2012-09-30","val":3400000,"accn":"0000353230-12-000018","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31"},{"start":"2012-01-01","end":"2012-12-31","val":10000000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19"},{"start":"2012-01-01","end":"2012-12-31","val":10000000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2012-01-01","end":"2012-12-31","val":10000000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05"},{"start":"2012-01-01","end":"2012-12-31","val":10000000,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2012"},{"start":"2013-01-01","end":"2013-06-30","val":1900000,"accn":"0000353230-13-000046","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-24"},{"start":"2013-01-01","end":"2013-06-30","val":1900000,"accn":"0000353230-14-000053","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-23"},{"start":"2013-01-01","end":"2013-09-30","val":2500000,"accn":"0000353230-13-000062","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-23"},{"start":"2013-01-01","end":"2013-09-30","val":2500000,"accn":"0000353230-14-000063","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-24"},{"start":"2013-01-01","end":"2013-12-31","val":4800000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2013-01-01","end":"2013-12-31","val":4800000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":4800000,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":1600000,"accn":"0000353230-14-000031","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-23"},{"start":"2014-01-01","end":"2014-03-31","val":1600000,"accn":"0000353230-15-000020","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-29","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":2700000,"accn":"0000353230-14-000053","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-23"},{"start":"2014-01-01","end":"2014-06-30","val":2700000,"accn":"0000353230-15-000035","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-24"},{"start":"2014-01-01","end":"2014-09-30","val":2700000,"accn":"0000353230-14-000063","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-24"},{"start":"2014-01-01","end":"2014-12-31","val":3500000,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":1800000,"accn":"0000353230-15-000020","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-29","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":1800000,"accn":"0000353230-15-000035","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-24"}]}},"StockRepurchasedDuringPeriodValue":{"label":"Stock Repurchased During Period, Value","description":"Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.","units":{"USD":[{"start":"2010-01-01","end":"2010-12-31","val":101000000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19","frame":"CY2010"},{"start":"2011-01-01","end":"2011-09-30","val":120000000,"accn":"0001442643-11-000055","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-25"},{"start":"2011-01-01","end":"2011-12-31","val":140000000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23"},{"start":"2011-01-01","end":"2011-12-31","val":140000000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19"},{"start":"2011-01-01","end":"2011-12-31","val":140000000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2011-01-01","end":"2011-12-31","val":140000000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05","frame":"CY2011"},{"start":"2012-01-01","end":"2012-03-31","val":22000000,"accn":"0001442643-12-000039","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-26","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":80000000,"accn":"0001442643-12-000061","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-07-25"},{"start":"2012-01-01","end":"2012-09-30","val":111000000,"accn":"0000353230-12-000018","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31"},{"start":"2012-01-01","end":"2012-12-31","val":339000000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19"},{"start":"2012-01-01","end":"2012-12-31","val":339000000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2012-01-01","end":"2012-12-31","val":339000000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05","frame":"CY2012"},{"start":"2013-01-01","end":"2013-06-30","val":110000000,"accn":"0000353230-13-000046","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-24"},{"start":"2013-01-01","end":"2013-06-30","val":100000000,"accn":"0000353230-14-000053","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-23"},{"start":"2013-01-01","end":"2013-09-30","val":91300000,"accn":"0000353230-13-000062","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-23"},{"start":"2013-01-01","end":"2013-09-30","val":91000000,"accn":"0000353230-14-000063","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-24"},{"start":"2014-01-01","end":"2014-03-31","val":95000000,"accn":"0000353230-14-000031","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-23"},{"start":"2014-01-01","end":"2014-03-31","val":95000000,"accn":"0000353230-15-000020","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-29","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":160000000,"accn":"0000353230-14-000053","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-23"},{"start":"2014-01-01","end":"2014-06-30","val":160000000,"accn":"0000353230-15-000035","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-24"},{"start":"2014-01-01","end":"2014-09-30","val":160000000,"accn":"0000353230-14-000063","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-24"},{"start":"2015-01-01","end":"2015-03-31","val":125000000,"accn":"0000353230-15-000020","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-29","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":125000000,"accn":"0000353230-15-000035","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-24"}]}},"StockRepurchaseProgramAuthorizedAmount":{"label":"Stock Repurchase Program, Authorized Amount (Deprecated 2014-01-31)","description":"Amount of a stock repurchase plan authorized by an entity's Board of Directors.","units":{"USD":[{"start":"2010-01-01","end":"2010-12-31","val":200000000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2010"},{"start":"2011-01-01","end":"2011-09-30","val":300000000,"accn":"0001442643-11-000055","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-25"},{"start":"2011-01-01","end":"2011-12-31","val":100000000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2011"},{"start":"2012-07-01","end":"2012-09-30","val":350000000,"accn":"0000353230-12-000018","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31","frame":"CY2012Q3"}]}},"StockRepurchaseProgramPeriodInForce":{"label":"Stock Repurchase Program, Period in Force (Deprecated 2012-01-31)","description":"The number of years over which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors.","units":{"pure":[{"end":"2011-09-30","val":2,"accn":"0001442643-11-000055","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-25","frame":"CY2011Q3I"}]}},"StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount":{"label":"Stock Repurchase Program, Remaining Authorized Repurchase Amount (Deprecated 2014-01-31)","description":"Amount remaining of a stock repurchase plan authorized by an entity's Board of Directors.","units":{"USD":[{"start":"2011-01-01","end":"2011-09-30","val":79000000,"accn":"0001442643-11-000055","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-25"},{"start":"2011-01-01","end":"2011-12-31","val":59000000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2011"},{"start":"2012-01-01","end":"2012-03-31","val":237000000,"accn":"0001442643-12-000039","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-26","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":179000000,"accn":"0001442643-12-000061","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-07-25"},{"start":"2012-01-01","end":"2012-09-30","val":498000000,"accn":"0000353230-12-000018","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31"},{"start":"2012-01-01","end":"2012-12-31","val":220000000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":220000000,"accn":"0000353230-13-000030","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-04-24","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":120000000,"accn":"0000353230-13-000046","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-07-24"},{"start":"2013-01-01","end":"2013-09-30","val":129000000,"accn":"0000353230-13-000062","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-10-23"},{"start":"2013-01-01","end":"2013-12-31","val":500000000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2013-01-01","end":"2013-12-31","val":500000000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":405000000,"accn":"0000353230-14-000031","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-23","frame":"CY2014Q1"}]}},"StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1":{"label":"Stock Repurchase Program, Remaining Authorized Repurchase Amount","description":"Amount remaining of a stock repurchase plan authorized.","units":{"USD":[{"end":"2014-06-30","val":340000000,"accn":"0000353230-14-000053","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-23","frame":"CY2014Q2I"},{"end":"2014-09-30","val":340000000,"accn":"0000353230-14-000063","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-24","frame":"CY2014Q3I"},{"end":"2014-12-31","val":265000000,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2014Q4I"},{"end":"2015-03-31","val":140000000,"accn":"0000353230-15-000020","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-29","frame":"CY2015Q1I"},{"end":"2015-06-30","val":140000000,"accn":"0000353230-15-000035","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-24","frame":"CY2015Q2I"}]}},"TaxBenefitFromStockOptionsExercised":{"label":"Tax Benefit from Stock Options Exercised (Deprecated 2012-01-31)","description":"Reductions in the entity's income taxes that arise when compensation cost (from non-qualified stock options) recognized on the entity's tax return exceeds compensation cost from non-qualified stock options recognized on the income statement. This element increases net cash provided by operating activities.","units":{"USD":[{"start":"2009-01-01","end":"2009-12-31","val":1800000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2009"},{"start":"2010-01-01","end":"2010-12-31","val":-1200000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2010"},{"start":"2011-01-01","end":"2011-12-31","val":5000000,"accn":"0001442643-12-000021","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-23","frame":"CY2011"}]}},"TaxBenefitFromStockOptionsExercised1":{"label":"Tax Benefit from Stock Options Exercised (Deprecated 2013-01-31)","description":"Tax benefits realized from the exercise of stock options resulting in reductions in the entity's income taxes, which increases net cash provided by operating activities.","units":{"USD":[{"start":"2010-01-01","end":"2010-12-31","val":-1200000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19","frame":"CY2010"},{"start":"2011-01-01","end":"2011-12-31","val":5000000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19","frame":"CY2011"},{"start":"2012-01-01","end":"2012-12-31","val":2500000,"accn":"0000353230-13-000009","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-19","frame":"CY2012"}]}},"TemporaryEquityIssuePeriodIncreaseOrDecrease":{"label":"Temporary Equity, Carrying Amount, Period Increase (Decrease)","description":"Change in the value of each type or class of stock classified as temporary equity during the period. The redemption requirement does not constitute an unconditional obligation that will be settled in a variable number of shares constituting a monetary value predominantly indexed to (a) a fixed monetary amount known at inception, (b) an amount inversely correlated with the residual value of the entity, or (c) an amount determined by reference to something other than the fair value of issuer's stock. Does not include mandatorily redeemable stock. The exception is if redemption is required upon liquidation or termination of the reporting entity.","units":{"USD":[{"start":"2013-01-01","end":"2013-12-31","val":-331101000,"accn":"0000353230-14-000012","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-19"},{"start":"2013-01-01","end":"2013-12-31","val":-331101000,"accn":"0000353230-14-000072","fy":2013,"fp":"FY","form":"8-K","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":-331101000,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":179396000,"accn":"0000353230-15-000010","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2014"}]}},"TemporaryEquityLiquidationPreference":{"label":"Temporary Equity, Liquidation Preference","description":"The aggregate liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. 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