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Derivatives - Derivative Balances (Details) (USD $)
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Jun. 30, 2014
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Dec. 31, 2013
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | $ 1,302,648,000,000 | $ 1,328,787,000,000 | ||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 806,300,000,000 | 920,300,000,000 | ||||
| Less: Legally enforceable master netting agreements | (717,200,000,000) | (825,500,000,000) | ||||
| Less: Cash collateral received/paid | (41,200,000,000) | (47,300,000,000) | ||||
| Derivative assets | 47,892,000,000 | 47,495,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 793,300,000,000 | 906,400,000,000 | ||||
| Less: Legally enforceable master netting agreements | (717,200,000,000) | (825,500,000,000) | ||||
| Less: Cash collateral received/paid | (37,500,000,000) | (43,500,000,000) | ||||
| Derivative Liability | 38,647,000,000 | 37,407,000,000 | ||||
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Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 797,200,000,000 | 911,100,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 791,600,000,000 | 903,400,000,000 | ||||
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Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 9,100,000,000 | 9,200,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 1,700,000,000 | 3,000,000,000 | ||||
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Interest Rate Contracts [Member] | Swap [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 30,735,700,000,000 | [1] | 33,272,000,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 577,600,000,000 | 667,400,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 568,600,000,000 | 659,300,000,000 | ||||
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Interest Rate Contracts [Member] | Swap [Member] | Not Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 569,400,000,000 | 659,900,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 568,300,000,000 | 658,400,000,000 | ||||
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Interest Rate Contracts [Member] | Swap [Member] | Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 8,200,000,000 | 7,500,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 300,000,000 | 900,000,000 | ||||
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Interest Rate Contracts [Member] | Futures and Forwards [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 9,781,200,000,000 | [1] | 8,217,600,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 1,900,000,000 | 1,600,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 2,000,000,000 | 1,500,000,000 | ||||
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Interest Rate Contracts [Member] | Futures and Forwards [Member] | Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 1,900,000,000 | 1,600,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 2,000,000,000 | 1,500,000,000 | ||||
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Interest Rate Contracts [Member] | Futures and Forwards [Member] | Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 0 | 0 | ||||
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Interest Rate Contracts [Member] | Written Options [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 1,924,400,000,000 | [1] | 2,065,400,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 72,000,000,000 | 64,400,000,000 | ||||
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Interest Rate Contracts [Member] | Written Options [Member] | Not Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 72,000,000,000 | 64,400,000,000 | ||||
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Interest Rate Contracts [Member] | Purchased Options [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 1,965,200,000,000 | [1] | 2,028,300,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 72,600,000,000 | 65,400,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 0 | 0 | ||||
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Interest Rate Contracts [Member] | Purchased Options [Member] | Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 72,600,000,000 | 65,400,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | ||||||
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Foreign Exchange Contract [Member] | Swap [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 2,289,600,000,000 | [1] | 2,284,100,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 34,100,000,000 | 44,100,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 34,100,000,000 | 43,700,000,000 | ||||
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Foreign Exchange Contract [Member] | Swap [Member] | Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 33,300,000,000 | 43,100,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 33,300,000,000 | 42,700,000,000 | ||||
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Foreign Exchange Contract [Member] | Swap [Member] | Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 800,000,000 | 1,000,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 800,000,000 | 1,000,000,000 | ||||
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Foreign Exchange Contract [Member] | Spot Futures and Forwards [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 3,777,200,000,000 | [1] | 2,922,500,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 21,200,000,000 | 33,200,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 23,100,000,000 | 34,600,000,000 | ||||
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Foreign Exchange Contract [Member] | Spot Futures and Forwards [Member] | Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 21,100,000,000 | 32,500,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 22,500,000,000 | 33,500,000,000 | ||||
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Foreign Exchange Contract [Member] | Spot Futures and Forwards [Member] | Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 100,000,000 | 700,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 600,000,000 | 1,100,000,000 | ||||
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Foreign Exchange Contract [Member] | Written Options [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 500,900,000,000 | [1] | 412,400,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 7,100,000,000 | 9,200,000,000 | ||||
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Foreign Exchange Contract [Member] | Written Options [Member] | Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 7,100,000,000 | 9,200,000,000 | ||||
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Foreign Exchange Contract [Member] | Written Options [Member] | Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | ||||||
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Foreign Exchange Contract [Member] | Purchased Options [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 460,400,000,000 | [1] | 392,400,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 6,900,000,000 | 8,800,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 0 | 0 | ||||
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Foreign Exchange Contract [Member] | Purchased Options [Member] | Not Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 6,900,000,000 | 8,800,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | ||||||
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Foreign Exchange Contract [Member] | Purchased Options [Member] | Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | ||||||
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Equity Contracts [Member] | Swap [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 185,100,000,000 | [1] | 162,000,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 3,900,000,000 | 3,600,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 3,700,000,000 | 4,200,000,000 | ||||
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Equity Contracts [Member] | Swap [Member] | Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 3,900,000,000 | 3,600,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 3,700,000,000 | 4,200,000,000 | ||||
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Equity Contracts [Member] | Futures and Forwards [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 83,700,000,000 | [1] | 71,400,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 1,200,000,000 | 1,100,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 1,700,000,000 | 1,400,000,000 | ||||
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Equity Contracts [Member] | Futures and Forwards [Member] | Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 1,200,000,000 | 1,100,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 1,700,000,000 | 1,400,000,000 | ||||
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Equity Contracts [Member] | Written Options [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 330,300,000,000 | [1] | 315,600,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 28,700,000,000 | 29,600,000,000 | ||||
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Equity Contracts [Member] | Written Options [Member] | Not Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 28,700,000,000 | 29,600,000,000 | ||||
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Equity Contracts [Member] | Purchased Options [Member]
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||||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 306,400,000,000 | [1] | 266,700,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 28,600,000,000 | 30,400,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 0 | 0 | ||||
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Equity Contracts [Member] | Purchased Options [Member] | Not Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 28,600,000,000 | 30,400,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | ||||||
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Commodity Contracts [Member] | Swap [Member]
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||||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 69,500,000,000 | [1] | 73,100,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 2,800,000,000 | 3,800,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 4,200,000,000 | 5,700,000,000 | ||||
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Commodity Contracts [Member] | Swap [Member] | Not Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 2,800,000,000 | 3,800,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 4,200,000,000 | 5,700,000,000 | ||||
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Commodity Contracts [Member] | Swap [Member] | Designated as Hedging Instrument [Member]
|
||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 0 | 0 | ||||
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Commodity Contracts [Member] | Futures and Forwards [Member]
|
||||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 564,600,000,000 | [1] | 454,400,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 5,100,000,000 | 4,700,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 3,300,000,000 | 2,500,000,000 | ||||
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Commodity Contracts [Member] | Futures and Forwards [Member] | Not Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 5,100,000,000 | 4,700,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 3,300,000,000 | 2,500,000,000 | ||||
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Commodity Contracts [Member] | Written Options [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 148,000,000,000 | [1] | 157,300,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 4,700,000,000 | 5,000,000,000 | ||||
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Commodity Contracts [Member] | Written Options [Member] | Not Designated as Hedging Instrument [Member]
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||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | ||||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 4,700,000,000 | 5,000,000,000 | ||||
|
Commodity Contracts [Member] | Purchased Options [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 154,300,000,000 | [1] | 164,000,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 4,800,000,000 | 5,200,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 0 | 0 | ||||
|
Commodity Contracts [Member] | Purchased Options [Member] | Not Designated as Hedging Instrument [Member]
|
||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 4,800,000,000 | 5,200,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | ||||||
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Credit Derivatives [Member] | Credit Default Swap [Member] | Credit Default Swap, Buying Protection [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 1,263,300,000,000 | [1] | 1,305,100,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 10,100,000,000 | 15,700,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 29,100,000,000 | 28,100,000,000 | ||||
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Credit Derivatives [Member] | Credit Default Swap [Member] | Credit Default Swap, Buying Protection [Member] | Not Designated as Hedging Instrument [Member]
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| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 10,100,000,000 | 15,700,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 29,100,000,000 | 28,100,000,000 | ||||
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Credit Derivatives [Member] | Credit Default Swap [Member] | Credit Default Swap, Selling Protection [Member]
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| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 1,223,840,000,000 | [1] | 1,265,380,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 30,400,000,000 | 29,300,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 8,691,000,000 | 13,814,000,000 | ||||
|
Credit Derivatives [Member] | Credit Default Swap [Member] | Credit Default Swap, Selling Protection [Member] | Not Designated as Hedging Instrument [Member]
|
||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 30,400,000,000 | 29,300,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 8,700,000,000 | 13,800,000,000 | ||||
|
Credit Derivatives [Member] | Return Swaps Other [Member] | Credit Default Swap, Buying Protection [Member]
|
||||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 64,900,000,000 | [1] | 38,100,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 400,000,000 | 2,000,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 1,800,000,000 | 3,200,000,000 | ||||
|
Credit Derivatives [Member] | Return Swaps Other [Member] | Credit Default Swap, Buying Protection [Member] | Not Designated as Hedging Instrument [Member]
|
||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 400,000,000 | 2,000,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 1,800,000,000 | 3,200,000,000 | ||||
|
Credit Derivatives [Member] | Return Swaps Other [Member] | Credit Default Swap, Selling Protection [Member]
|
||||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Contract/Notional | 78,808,000,000 | [1] | 63,407,000,000 | [1] | ||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 4,700,000,000 | 4,000,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | 515,000,000 | 177,000,000 | ||||
|
Credit Derivatives [Member] | Return Swaps Other [Member] | Credit Default Swap, Selling Protection [Member] | Not Designated as Hedging Instrument [Member]
|
||||||
| Derivative Assets [Abstract] | ||||||
| Gross Derivative Assets | 4,700,000,000 | 4,000,000,000 | ||||
| Derivative Liabilities [Abstract] | ||||||
| Gross Derivative Liabilities | $ 500,000,000 | $ 200,000,000 | ||||
|
||||||