Derivatives - Credit Derivatives (Details) (USD $)
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Dec. 31, 2011
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Dec. 31, 2010
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value, Gross Liability |
$ 1,861,300,000,000
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$ 1,505,800,000,000
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Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
316,066,000,000
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218,655,000,000
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
632,264,000,000
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781,075,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
678,480,000,000
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670,959,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
276,972,000,000
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485,273,000,000
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Notional Amount of Derivatives |
1,903,782,000,000
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2,155,962,000,000
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In Text Details [Abstract] |
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Carrying value of written credit derivatives |
48,000,000,000
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43,700,000,000
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Notional Amount of Written Credit Derivatives With Identical Referenced Underlying Held by Entity |
1,000,000,000,000
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1,400,000,000,000
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Credit Derivative [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Less Than One Year |
5,553,000,000
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757,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
16,451,000,000
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9,239,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
35,406,000,000
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15,225,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
33,793,000,000
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38,461,000,000
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Derivative Liability, Fair Value, Gross Liability |
91,203,000,000
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63,682,000,000
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Credit Default Swap [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Less Than One Year |
5,031,000,000
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756,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
16,449,000,000
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9,237,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
35,343,000,000
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15,185,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
33,664,000,000
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37,986,000,000
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Derivative Liability, Fair Value, Gross Liability |
90,487,000,000
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63,164,000,000
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Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
315,761,000,000
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218,542,000,000
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
630,241,000,000
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780,987,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
664,446,000,000
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654,595,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
275,496,000,000
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479,364,000,000
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Notional Amount of Derivatives |
1,885,944,000,000
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[1] |
2,133,488,000,000
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[1] |
Credit Default Swap [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member] | External Credit Rating, Investment Grade [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Less Than One Year |
795,000,000
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158,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
5,011,000,000
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2,607,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
17,271,000,000
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7,331,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
7,325,000,000
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14,880,000,000
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Derivative Liability, Fair Value, Gross Liability |
30,402,000,000
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24,976,000,000
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Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
182,137,000,000
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133,691,000,000
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
401,914,000,000
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466,565,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
477,924,000,000
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475,715,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
127,570,000,000
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275,434,000,000
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Notional Amount of Derivatives |
1,189,545,000,000
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1,351,405,000,000
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Credit Default Swap [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member] | External Credit Rating, Non Investment Grade [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Less Than One Year |
4,236,000,000
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598,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
11,438,000,000
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6,630,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
18,072,000,000
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7,854,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
26,339,000,000
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23,106,000,000
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Derivative Liability, Fair Value, Gross Liability |
60,085,000,000
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38,188,000,000
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Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
133,624,000,000
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84,851,000,000
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
228,327,000,000
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314,422,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
186,522,000,000
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178,880,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
147,926,000,000
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203,930,000,000
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Notional Amount of Derivatives |
696,399,000,000
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782,083,000,000
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Return Swaps Other [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Less Than One Year |
522,000,000
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1,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
2,000,000
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2,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
63,000,000
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40,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
129,000,000
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475,000,000
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Derivative Liability, Fair Value, Gross Liability |
716,000,000
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518,000,000
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Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
305,000,000
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113,000,000
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
2,023,000,000
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88,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
14,034,000,000
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16,364,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
1,476,000,000
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5,909,000,000
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Notional Amount of Derivatives |
17,838,000,000
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[1] |
22,474,000,000
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[1] |
Return Swaps Other [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member] | External Credit Rating, Investment Grade [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
30,000,000
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38,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
1,000,000
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60,000,000
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Derivative Liability, Fair Value, Gross Liability |
31,000,000
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98,000,000
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Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
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10,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
9,116,000,000
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15,413,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
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4,012,000,000
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Notional Amount of Derivatives |
9,116,000,000
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19,435,000,000
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Return Swaps Other [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member] | External Credit Rating, Non Investment Grade [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Less Than One Year |
522,000,000
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1,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
2,000,000
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2,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
33,000,000
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2,000,000
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Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
128,000,000
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415,000,000
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Derivative Liability, Fair Value, Gross Liability |
685,000,000
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420,000,000
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Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
305,000,000
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113,000,000
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
2,023,000,000
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78,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
4,918,000,000
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951,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
1,476,000,000
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1,897,000,000
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Notional Amount of Derivatives |
8,722,000,000
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3,039,000,000
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Credit-related notes [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Less Than One Year |
124,000,000
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[2] |
9,000,000
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[2],[3] |
Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
79,000,000
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[2] |
169,000,000
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[2],[3] |
Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
240,000,000
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[2] |
174,000,000
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[2],[3] |
Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
3,211,000,000
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[2] |
5,948,000,000
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[2],[3] |
Derivative Liability, Fair Value, Gross Liability |
3,654,000,000
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[2] |
6,300,000,000
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[2],[3] |
Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
124,000,000
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9,000,000
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
79,000,000
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169,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
240,000,000
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174,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
3,211,000,000
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5,948,000,000
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Notional Amount of Derivatives |
3,654,000,000
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6,300,000,000
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Credit-related notes [Member] | External Credit Rating, Investment Grade [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
5,000,000
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[2] |
136,000,000
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[2],[3] |
Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
132,000,000
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[2] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
1,925,000,000
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[2] |
3,525,000,000
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[2],[3] |
Derivative Liability, Fair Value, Gross Liability |
2,062,000,000
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[2] |
3,661,000,000
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[2],[3] |
Notional Amount of Derivatives, [Abstract] |
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
0
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0
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
5,000,000
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136,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
132,000,000
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0
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Derivative Liability, Notional Amount, Greater Than Five Years |
1,925,000,000
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3,525,000,000
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Notional Amount of Derivatives |
2,062,000,000
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3,661,000,000
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Credit-related notes [Member] | External Credit Rating, Non Investment Grade [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value of Derivative Liability, Expiration Less Than One Year |
124,000,000
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[2] |
9,000,000
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[2],[3] |
Derivative Liability, Fair Value of Derivative Liability, Expiration From One to Three Years |
74,000,000
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[2] |
33,000,000
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[2],[3] |
Derivative Liability, Fair Value of Derivative Liability, Expiration From Three To Five Years |
108,000,000
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[2] |
174,000,000
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[2],[3] |
Derivative Liability, Fair Value of Derivative Liability, Expiration Greater Than Five Years |
1,286,000,000
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[2] |
2,423,000,000
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[2],[3] |
Derivative Liability, Fair Value, Gross Liability |
1,592,000,000
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[2] |
2,639,000,000
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[2],[3] |
Notional Amount of Derivatives, [Abstract] |
|
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Derivative Liability, Notional Amount, Expiration Less Than One Year |
124,000,000
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|
9,000,000
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Derivative Liability, Notional Amount, Expiration From One to Three Years |
74,000,000
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33,000,000
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Derivative Liability, Notional Amount, Expiration From Three to Five Years |
108,000,000
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|
174,000,000
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Derivative Liability, Notional Amount, Greater Than Five Years |
1,286,000,000
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2,423,000,000
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Notional Amount of Derivatives |
1,592,000,000
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2,639,000,000
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Scenario, Previously Reported [Member] | Credit-related notes [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value, Gross Liability |
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3,600,000,000
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Cumulative-Effect Adjustment, Consolidation of Variable Interest Entity [Member] | Credit-related notes [Member]
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Carrying Value [Abstract] |
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Derivative Liability, Fair Value, Gross Liability |
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$ 6,300,000,000
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