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Commitments and Contingencies - (Details) (USD $)
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3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
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Sep. 30, 2014
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Jun. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Commitments and Contingencies Disclosure [Abstract] | |||||
| Litigation settlements | $ 0 | $ 62,000,000 | $ 0 | $ 62,000,000 | $ 0 |
| Off-balance sheet arrangements related to letters of credit and other bank issued guarantees, total | $ 1,600,000,000 | $ 1,600,000,000 | |||