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Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.","units":{"USD":[{"end":"2016-12-31","val":3580492000,"accn":"0000875159-18-000043","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04"},{"end":"2016-12-31","val":3580492000,"accn":"0000875159-18-000061","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-03","frame":"CY2016Q4I"},{"end":"2017-03-31","val":3513174000,"accn":"0000875159-18-000043","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04","frame":"CY2017Q1I"},{"end":"2017-06-30","val":3315052000,"accn":"0000875159-18-000061","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-03","frame":"CY2017Q2I"},{"end":"2017-12-31","val":3593451000,"accn":"0000875159-18-000043","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04"},{"end":"2017-12-31","val":3593451000,"accn":"0000875159-18-000061","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-03","frame":"CY2017Q4I"},{"end":"2018-03-31","val":3639786000,"accn":"0000875159-18-000043","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04","frame":"CY2018Q1I"},{"end":"2018-06-30","val":3030567000,"accn":"0000875159-18-000061","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-03","frame":"CY2018Q2I"}]}},"CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect":{"label":"Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect","description":"Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.","units":{"USD":[{"start":"2017-01-01","end":"2017-03-31","val":-67318000,"accn":"0000875159-18-000043","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":-265440000,"accn":"0000875159-18-000061","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-03"},{"start":"2018-01-01","end":"2018-03-31","val":46335000,"accn":"0000875159-18-000043","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":-562884000,"accn":"0000875159-18-000061","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-03"}]}},"CashCollateralForBorrowedSecurities":{"label":"Cash Collateral for Borrowed Securities","description":"Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage.","units":{"USD":[{"end":"2009-12-31","val":169100000,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15","frame":"CY2009Q4I"},{"end":"2010-12-31","val":23000000,"accn":"0000930413-11-006954","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-03","frame":"CY2010Q4I"},{"end":"2010-12-31","val":23000000,"accn":"0000930413-11-005122","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04"},{"end":"2010-12-31","val":23000000,"accn":"0000930413-11-003790","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-09"},{"end":"2010-12-31","val":23000000,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15"},{"end":"2011-03-31","val":19800000,"accn":"0000930413-11-003790","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-09","frame":"CY2011Q1I"},{"end":"2011-06-30","val":32900000,"accn":"0000930413-11-005122","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04","frame":"CY2011Q2I"},{"end":"2011-09-30","val":54000000,"accn":"0000930413-11-006954","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-03","frame":"CY2011Q3I"}]}},"CashEquivalentsAtCarryingValue":{"label":"Cash Equivalents, at Carrying Value","description":"Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued 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Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2011-12-31","val":24865000,"accn":"0000930413-12-001121","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"},{"end":"2012-12-31","val":31632000,"accn":"0000930413-13-001175","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28","frame":"CY2012Q4I"},{"end":"2013-12-31","val":23900,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15"},{"end":"2013-12-31","val":28410000,"accn":"0000875159-14-000013","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-26"},{"end":"2013-12-31","val":28410000,"accn":"0000875159-14-000078","fy":2013,"fp":"FY","form":"8-K","filed":"2014-10-31","frame":"CY2013Q4I"},{"end":"2014-12-31","val":28933000,"accn":"0000875159-15-000011","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-25","frame":"CY2014Q4I"},{"end":"2015-12-31","val":56122000,"accn":"0000875159-16-000097","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26","frame":"CY2015Q4I"},{"end":"2016-12-31","val":57030000,"accn":"0000875159-17-000016","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-23","frame":"CY2016Q4I"},{"end":"2017-12-31","val":59328000,"accn":"0000875159-18-000015","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-23","frame":"CY2017Q4I"}]}},"OperatingLeasesFutureMinimumPaymentsDueInTwoYears":{"label":"Operating Leases, Future Minimum Payments, Due in Two Years","description":"Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. 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realized.","units":{"USD":[{"end":"2016-12-31","val":206600000,"accn":"0000875159-17-000016","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-23","frame":"CY2016Q4I"},{"end":"2017-12-31","val":231937000,"accn":"0000875159-18-000015","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-23","frame":"CY2017Q4I"}]}},"OtherAssetImpairmentCharges":{"label":"Other Asset Impairment Charges","description":"The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair 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The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.","units":{"USD/shares":[{"end":"2011-06-30","val":25,"accn":"0000930413-11-005122","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04","frame":"CY2011Q2I"},{"end":"2011-09-30","val":25,"accn":"0000930413-11-006954","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-03","frame":"CY2011Q3I"}]}},"PreferredStockParOrStatedValuePerShare":{"label":"Preferred Stock, Par or Stated Value Per Share","description":"Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.","units":{"USD/shares":[{"end":"2008-12-31","val":0.01,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15","frame":"CY2008Q4I"},{"end":"2009-12-31","val":0.01,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15","frame":"CY2009Q4I"},{"end":"2010-12-31","val":0.01,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15","frame":"CY2010Q4I"}]}},"PreferredStockSharesAuthorized":{"label":"Preferred Stock, Shares Authorized","description":"The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.","units":{"shares":[{"end":"2009-12-31","val":1000000,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15","frame":"CY2009Q4I"},{"end":"2010-12-31","val":1000000,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15","frame":"CY2010Q4I"}]}},"PreferredStockSharesIssued":{"label":"Preferred Stock, Shares Issued","description":"Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.","units":{"shares":[{"end":"2009-12-31","val":1000000,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15","frame":"CY2009Q4I"},{"end":"2010-12-31","val":1000000,"accn":"0000930413-11-001907","fy":2010,"fp":"FY","form":"10-K/A","filed":"2011-03-15","frame":"CY2010Q4I"}]}},"PreferredStockSharesOutstanding":{"label":"Preferred Stock, Shares Outstanding","description":"Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. 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Amount excludes temporary equity. Alternate caption for the concept is permanent 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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. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.","units":{"shares":[{"end":"2010-12-31","val":2876000,"accn":"0000930413-12-001121","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2010Q4I"},{"end":"2010-12-31","val":2876000,"accn":"0000930413-11-006954","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-03"},{"end":"2010-12-31","val":2876000,"accn":"0000930413-11-005122","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04"},{"end":"2011-06-30","val":2846000,"accn":"0000930413-11-005122","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04","frame":"CY2011Q2I"},{"end":"2011-09-30","val":0,"accn":"0000930413-11-006954","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-03","frame":"CY2011Q3I"},{"end":"2011-12-31","val":0,"accn":"0000930413-12-001121","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-27","frame":"CY2011Q4I"}]}},"TemporaryEquitySharesOutstanding":{"label":"Temporary Equity, Shares Outstanding","description":"The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. 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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