Derivatives and Hedging Activities (Gains And Losses Recognized In Consolidated Statement Of Operations On Qualifying and Non-Qualifying Financial Instruments Other) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Not Designated as Hedging Instrument [Member] \| Restructuring And Other Charges [Member] \| Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Cost of Hedge	$ 3	$ 7

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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