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This item includes treasury stock repurchased by the entity. 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"DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral":{"label":"Derivative 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Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.","units":{"USD":[{"end":"2013-06-30","val":17200000,"accn":"0001193125-13-318316","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-05","frame":"CY2013Q2I"},{"end":"2013-09-30","val":11900000,"accn":"0001193125-13-426311","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-05","frame":"CY2013Q3I"},{"end":"2013-12-31","val":10600000,"accn":"0001193125-14-090249","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-10","frame":"CY2013Q4I"},{"end":"2014-03-31","val":13800000,"accn":"0001193125-14-194794","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-12","frame":"CY2014Q1I"},{"end":"2014-06-30","val":28600000,"accn":"0001193125-14-304964","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-11","frame":"CY2014Q2I"},{"end":"2014-09-30","val":3800000,"accn":"0001564590-14-005337","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-10","frame":"CY2014Q3I"}]}},"DerivativeLiabilities":{"label":"Derivative Liability","description":"Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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Includes assets not subject to a master netting arrangement and not elected to be 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(Loss) on Sale of Derivatives","description":"The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. 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