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Derivatives and Hedging Activities (Details) - USD ($) $ in Millions | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Total fair value of derivatives assets | $ 230 | $ 765
Total fair value of derivatives liabilties | 412 | 280
Other Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Cash collateral netting | 30 | 54
Derivative asset and liability netting | (94) | (157)
Total derivative assets, net | 106 | 555
Other Assets [Member] | Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total fair value of derivatives assets | 110 | 458
Other Assets [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total fair value of derivatives assets | 57 | 111
Other Assets [Member] | Foreign exchange contracts [Member] | Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total fair value of derivatives assets | 53 | 347
Other Assets [Member] | Foreign exchange contracts [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total fair value of derivatives assets | 120 | 308
Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Cash collateral netting | 0 | (68)
Derivative asset and liability netting | (94) | (157)
Total derivative liabilities, net | 318 | 55
Other Liabilities [Member] | Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total fair value of derivatives liabilties | 196 | 104
Other Liabilities [Member] | Foreign exchange contracts [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total fair value of derivatives liabilties | 216 | 176
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 derivatives liabilties | 0 | 69
Other Liabilities [Member] | Net Investment Hedging [Member] | Foreign exchange contracts [Member] | Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total fair value of derivatives liabilties | 196 | 35
Individually Significant Counterparties [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total derivative assets, net | 0 | 0
Total derivative liabilities, net | $ 0 | $ 0

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