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Reserves For Losses (Details 3) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
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Card Member Loans And Related Reserves Evaluated Separately And Collectively For Impairment [Abstract] |  |  |
Card Member loans evaluated separately for impairment | $ 279 | $ 286 | $ 356
Reserves on Card Member loans evaluated separately for impairment | 53 | 67 | 78
Card Member loans evaluated collectively for impairment | 58,294 | 70,099 | 66,882
Reserves on Card Member loans evaluated collectively for impairment | $ 975 | $ 1,134 | $ 1,183

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- Definition Represents Card Member loans evaluated collectively for impairment. + References No definition available. + Details
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