Derivatives and Hedging Activities (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative assets	$ 331	$ 156
Cash collateral netting on interest rate contracts	(170)	(53)
Derivative asset and liability netting	(25)	(33)
Total derivatives assets,net	136	70
Other Assets [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative assets	224	94
Other Assets [Member] \| Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative assets	107	62
Other Assets [Member] \| Fair Value Hedging [Member] \| Interest Rate Contract [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative assets	170	64
Other Assets [Member] \| Net Investment Hedging [Member] \| Foreign Exchange Contract [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative assets	54	30
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative liability	61	55
Cash collateral netting on interest rate contracts	0	0
Derivative asset and liability netting	(25)	(33)
Total derivatives liabilities, net	36	22
Other Liabilities [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative liability	56	22
Other Liabilities [Member] \| Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative liability	5	33
Other Liabilities [Member] \| Fair Value Hedging [Member] \| Interest Rate Contract [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative liability	0	9
Other Liabilities [Member] \| Net Investment Hedging [Member] \| Foreign Exchange Contract [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total fair value of derivative liability	$ 56	$ 13

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- Definition

Represents the netting of derivative assets and liabilities under master netting agreements.

+ References

No definition available.

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- Definition

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+ References

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other 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. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

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- Definition

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- Definition

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+ References

No definition available.

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