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Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.","units":{"USD":[{"end":"2006-12-31","val":5593000,"accn":"0001193125-10-036866","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-23","frame":"CY2006Q4I"},{"end":"2007-12-31","val":1812000,"accn":"0001193125-10-036866","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-23","frame":"CY2007Q4I"},{"end":"2007-12-31","val":1812000,"accn":"0001193125-09-224187","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-05"},{"end":"2007-12-31","val":1812000,"accn":"0001193125-09-163743","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-04"},{"end":"2008-06-30","val":1075000,"accn":"0001193125-09-163743","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-04","frame":"CY2008Q2I"},{"end":"2008-09-30","val":3879000,"accn":"0001193125-09-224187","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-05","frame":"CY2008Q3I"},{"end":"2008-12-31","val":6883000,"accn":"0001193125-10-243440","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-02","frame":"CY2008Q4I"},{"end":"2008-12-31","val":6883000,"accn":"0001193125-10-174060","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-03"},{"end":"2008-12-31","val":6883000,"accn":"0001193125-10-107586","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-05"},{"end":"2008-12-31","val":6883000,"accn":"0001193125-10-036866","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-23"},{"end":"2008-12-31","val":6883000,"accn":"0001193125-09-224187","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-05"},{"end":"2008-12-31","val":6883000,"accn":"0001193125-09-163743","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-04"},{"end":"2009-03-31","val":1694000,"accn":"0001193125-10-107586","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-05","frame":"CY2009Q1I"},{"end":"2009-06-30","val":2738000,"accn":"0001193125-10-174060","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-03","frame":"CY2009Q2I"},{"end":"2009-06-30","val":2738000,"accn":"0001193125-09-163743","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-04"},{"end":"2009-09-30","val":1692000,"accn":"0001193125-10-243440","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-02","frame":"CY2009Q3I"},{"end":"2009-09-30","val":1692000,"accn":"0001193125-09-224187","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-05"},{"end":"2009-12-31","val":1511000,"accn":"0001193125-10-243440","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-02","frame":"CY2009Q4I"},{"end":"2009-12-31","val":1511000,"accn":"0001193125-10-174060","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-03"},{"end":"2009-12-31","val":1511000,"accn":"0001193125-10-107586","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-05"},{"end":"2009-12-31","val":1511000,"accn":"0001193125-10-036866","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-23"},{"end":"2010-03-31","val":1393000,"accn":"0001193125-10-107586","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-05","frame":"CY2010Q1I"},{"end":"2010-06-30","val":2142000,"accn":"0001193125-10-174060","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-03","frame":"CY2010Q2I"},{"end":"2010-09-30","val":4152000,"accn":"0001193125-10-243440","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-02","frame":"CY2010Q3I"}]}},"CashAcquiredFromAcquisition":{"label":"Cash Acquired from Acquisition","description":"The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).","units":{"USD":[{"start":"2007-01-01","end":"2007-12-31","val":2145000,"accn":"0001193125-10-036866","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-23","frame":"CY2007"},{"start":"2008-01-01","end":"2008-12-31","val":0,"accn":"0001193125-10-036866","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-23","frame":"CY2008"},{"start":"2009-01-01","end":"2009-12-31","val":0,"accn":"0001193125-10-036866","fy":2009,"fp":"FY","form":"10-K","filed":"2010-02-23","frame":"CY2009"},{"start":"2011-01-01","end":"2011-12-31","val":0,"accn":"0001047469-12-001768","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011"}]}},"CashAndCashEquivalentsAtCarryingValue":{"label":"Cash and Cash Equivalents, at Carrying Value","description":"Amount of currency on hand as well as demand deposits with banks or financial institutions. 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