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Goodwill Balances by Business Segment (Details) (USD $)
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12 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 12 Months Ended | 3 Months Ended | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
Dec. 31, 2011
Deposits [Member]
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Dec. 31, 2010
Deposits [Member]
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Dec. 31, 2010
Card Services [Member]
|
Jun. 30, 2011
Consumer Real Estate Services [Member]
|
Dec. 31, 2010
Consumer Real Estate Services [Member]
|
Dec. 31, 2011
Consumer Real Estate Services [Member]
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Dec. 31, 2010
Consumer Real Estate Services [Member]
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Dec. 31, 2011
Global Commercial Banking [Member]
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Dec. 31, 2010
Global Commercial Banking [Member]
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Dec. 31, 2011
Global Banking & Markets [Member]
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Dec. 31, 2010
Global Banking & Markets [Member]
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Dec. 31, 2011
Global Wealth & Investment Management [Member]
|
Dec. 31, 2010
Global Wealth & Investment Management [Member]
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Dec. 31, 2011
All Other [Member]
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Dec. 31, 2010
All Other [Member]
|
Dec. 31, 2011
International Consumer Card [Member]
|
Sep. 30, 2011
International Consumer Card [Member]
|
Sep. 30, 2011
CANADA
International Consumer Card [Member]
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| Goodwill [Abstract] | |||||||||||||||||||||||||
| Total Goodwill | $ 69,967,000,000 | $ 73,861,000,000 | $ 29,986,000,000 | $ 29,986,000,000 | $ 2,796,000,000 | $ 2,796,000,000 | $ 24,802,000,000 | $ 24,358,000,000 | $ 4,441,000,000 | $ 4,439,000,000 | $ 9,928,000,000 | $ 9,928,000,000 | $ 810,000,000 | $ 2,354,000,000 | |||||||||||
| In Text Details [Abstract] | |||||||||||||||||||||||||
| Goodwill Allocated Due To Sale of Business | 193,000,000 | 1,900,000,000 | 526,000,000 | ||||||||||||||||||||||
| Goodwill impairment | $ 3,184,000,000 | [1] | $ 12,400,000,000 | [1] | $ 0 | $ 0 | $ 10,400,000,000 | $ 10,400,000,000 | $ 2,600,000,000 | $ 2,000,000,000 | $ 2,603,000,000 | $ 2,000,000,000 | $ 581,000,000 | $ 581,000,000 | |||||||||||
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