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Financial Instruments And Risk Management Financial Instruments And Risk Management (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Interest Rate Derivatives, at Fair Value, Net	$ (35)	$ (47)
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge	41	47
Derivative Asset		3
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 6	0
Maximum length of time hedged in balance sheet hedge	30 days
Maximum Length of Time Hedged in Cash Flow Hedge	30 months
Derivative Liability	$ 1	$ 7
Balance Sheet Hedge [Member]
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Derivative, Notional Amount	108
Cash Flow Hedging [Member]
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Cash flow hedge	16
Maximum [Member]
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Derivative Asset	$ 1

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



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