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This item includes treasury stock repurchased by the entity. 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Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.","units":{"USD":[{"end":"2009-12-31","val":53500000,"accn":"0000950123-10-074178","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-06"},{"end":"2009-12-31","val":53500000,"accn":"0000950123-10-101625","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-05"},{"end":"2009-12-31","val":53500000,"accn":"0000950123-11-018460","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-25","frame":"CY2009Q4I"},{"end":"2010-06-30","val":9000000,"accn":"0000950123-10-074178","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-06","frame":"CY2010Q2I"},{"end":"2010-09-30","val":137000000,"accn":"0000950123-10-101625","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-05","frame":"CY2010Q3I"},{"end":"2010-12-31","val":56500000,"accn":"0000950123-11-018460","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-25"},{"end":"2010-12-31","val":56500000,"accn":"0000950123-11-046366","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-06"},{"end":"2010-12-31","val":56500000,"accn":"0001193125-11-213534","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-08"},{"end":"2010-12-31","val":56500000,"accn":"0001193125-11-296949","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04"},{"end":"2010-12-31","val":56500000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2010Q4I"},{"end":"2011-03-31","val":42500000,"accn":"0000950123-11-046366","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-06","frame":"CY2011Q1I"},{"end":"2011-12-31","val":2500000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27"},{"end":"2011-12-31","val":2500000,"accn":"0001193125-12-210970","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04"},{"end":"2011-12-31","val":2500000,"accn":"0001104659-12-054128","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03"},{"end":"2011-12-31","val":2500000,"accn":"0001104659-12-073550","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-02"},{"end":"2011-12-31","val":2500000,"accn":"0001104659-13-013072","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-22","frame":"CY2011Q4I"},{"end":"2012-03-31","val":65500000,"accn":"0001193125-12-210970","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04","frame":"CY2012Q1I"},{"end":"2012-06-30","val":175000000,"accn":"0001104659-12-054128","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03","frame":"CY2012Q2I"},{"end":"2012-09-30","val":128000000,"accn":"0001104659-12-073550","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-02","frame":"CY2012Q3I"},{"end":"2012-12-31","val":162500000,"accn":"0001104659-13-013072","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-22"},{"end":"2012-12-31","val":162500000,"accn":"0001104659-13-036956","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-03"},{"end":"2012-12-31","val":162500000,"accn":"0001104659-13-059287","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-02"},{"end":"2012-12-31","val":162500000,"accn":"0001104659-13-079971","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-01"},{"end":"2012-12-31","val":162500000,"accn":"0001104659-14-012213","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-21","frame":"CY2012Q4I"},{"end":"2013-03-31","val":169000000,"accn":"0001104659-13-036956","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-03","frame":"CY2013Q1I"},{"end":"2013-06-30","val":241000000,"accn":"0001104659-13-059287","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-02","frame":"CY2013Q2I"},{"end":"2013-09-30","val":106500000,"accn":"0001104659-13-079971","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-01","frame":"CY2013Q3I"},{"end":"2013-12-31","val":193000000,"accn":"0001104659-14-012213","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-21"},{"end":"2013-12-31","val":193000000,"accn":"0001104659-14-033963","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-02"},{"end":"2013-12-31","val":193000000,"accn":"0001104659-14-055822","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-01"},{"end":"2013-12-31","val":193000000,"accn":"0001104659-14-075487","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-31"},{"end":"2013-12-31","val":193000000,"accn":"0001104659-15-013340","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-24","frame":"CY2013Q4I"},{"end":"2014-03-31","val":179000000,"accn":"0001104659-14-033963","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-02","frame":"CY2014Q1I"},{"end":"2014-06-30","val":282500000,"accn":"0001104659-14-055822","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-01","frame":"CY2014Q2I"},{"end":"2014-09-30","val":371000000,"accn":"0001104659-14-075487","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-31","frame":"CY2014Q3I"},{"end":"2014-12-31","val":269000000,"accn":"0001104659-15-013340","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-24"},{"end":"2014-12-31","val":269000000,"accn":"0001104659-15-032996","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-01"},{"end":"2014-12-31","val":269000000,"accn":"0001104659-15-057983","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-10","frame":"CY2014Q4I"},{"end":"2015-03-31","val":291500000,"accn":"0001104659-15-032996","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-01","frame":"CY2015Q1I"},{"end":"2015-06-30","val":318500000,"accn":"0001104659-15-057983","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-10","frame":"CY2015Q2I"}]}},"LineOfCreditFacilityAmountOutstanding":{"label":"Line of Credit Facility, Amount Outstanding (Deprecated 2014-01-31)","description":"Amount borrowed under the credit facility as of the balance sheet date.","units":{"USD":[{"end":"2011-09-30","val":0,"accn":"0001193125-11-296949","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04","frame":"CY2011Q3I"},{"end":"2011-12-31","val":2500000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"},{"end":"2012-03-31","val":65500000,"accn":"0001193125-12-210970","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04","frame":"CY2012Q1I"}]}},"LineOfCreditFacilityInterestRateAtPeriodEnd":{"label":"Line of Credit Facility, Interest Rate at Period End","description":"The effective interest rate at the end of the reporting period.","units":{"pure":[{"end":"2011-06-30","val":0.0255,"accn":"0001193125-11-213534","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-08","frame":"CY2011Q2I"},{"end":"2011-09-30","val":0.0254,"accn":"0001193125-11-296949","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04","frame":"CY2011Q3I"},{"end":"2011-12-31","val":0.0161,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"},{"end":"2012-03-31","val":0.0155,"accn":"0001193125-12-210970","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04","frame":"CY2012Q1I"}]}},"LineOfCreditFacilityMaximumBorrowingCapacity":{"label":"Line of Credit Facility, Maximum Borrowing Capacity","description":"Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.","units":{"USD":[{"end":"2011-02-10","val":175000000,"accn":"0001193125-11-296949","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04","frame":"CY2010Q4I"},{"end":"2011-02-10","val":175000000,"accn":"0001193125-11-213534","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-08"},{"end":"2011-06-30","val":175000000,"accn":"0001193125-11-213534","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-08","frame":"CY2011Q2I"},{"end":"2011-09-30","val":175000000,"accn":"0001193125-11-296949","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04","frame":"CY2011Q3I"},{"end":"2011-12-09","val":275000000,"accn":"0001193125-12-210970","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04"},{"end":"2011-12-09","val":275000000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27"},{"end":"2011-12-31","val":175000000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"},{"end":"2012-03-31","val":175000000,"accn":"0001193125-12-210970","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04","frame":"CY2012Q1I"}]}},"LineOfCreditFacilityRemainingBorrowingCapacity":{"label":"Line of Credit Facility, Remaining Borrowing Capacity","description":"Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).","units":{"USD":[{"end":"2011-06-30","val":168203000,"accn":"0001193125-11-213534","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-08","frame":"CY2011Q2I"},{"end":"2011-09-30","val":165784000,"accn":"0001193125-11-296949","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04","frame":"CY2011Q3I"},{"end":"2011-12-31","val":264654000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"},{"end":"2012-03-31","val":201654000,"accn":"0001193125-12-210970","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04","frame":"CY2012Q1I"}]}},"LoansAssumed":{"label":"Loans Assumed (Deprecated 2011-01-31)","description":"The fair value of loans assumed in noncash investing or financing activities.","units":{"USD":[{"start":"2010-01-01","end":"2010-06-30","val":20238000,"accn":"0000950123-10-074178","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-06"},{"start":"2010-01-01","end":"2010-09-30","val":155638000,"accn":"0000950123-10-101625","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-05"}]}},"LoansAssumed1":{"label":"Loans Assumed","description":"The fair value of loans assumed in noncash investing or financing activities.","units":{"USD":[{"start":"2010-10-01","end":"2010-12-31","val":15762000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2010Q4"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive":{"label":"Long-Term Debt, Maturity, after Year Five","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":1216385000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths":{"label":"Long-Term Debt, Maturity, Year One","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":74239000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive":{"label":"Long-Term Debt, Maturity, Year Five","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":340030000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour":{"label":"Long-Term Debt, Maturity, Year Four","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":276582000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree":{"label":"Long-Term Debt, Maturity, Year Three","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":128294000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo":{"label":"Long-Term Debt, Maturity, Year Two","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2011-12-31","val":225306000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"}]}},"LongtermDebtPercentageBearingFixedInterestAmount":{"label":"Long-term Debt, Percentage Bearing Fixed Interest, Amount","description":"The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.","units":{"USD":[{"end":"2010-12-31","val":2207495000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2010Q4I"},{"end":"2011-12-31","val":2058724000,"accn":"0001193125-12-082009","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"}]}},"LongtermDebtPercentageBearingVariableInterestAmount":{"label":"Long-term 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This excludes temporary equity and is sometimes called permanent 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15-013340","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-24"},{"end":"2014-12-31","val":1653218000,"accn":"0001104659-15-032996","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-01"},{"end":"2014-12-31","val":1653218000,"accn":"0001104659-15-057983","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-10","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1669300000,"accn":"0001104659-15-032996","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-01","frame":"CY2015Q1I"},{"end":"2015-06-30","val":1664388000,"accn":"0001104659-15-057983","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-10","frame":"CY2015Q2I"}]}},"StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest":{"label":"Stockholders' 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Amount excludes temporary equity. Alternate caption for the concept is permanent 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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 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