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Reserves For Losses (Details 1) - USD ($) $ in Millions | Sep. 30, 2017 | Dec. 31, 2016
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Card Member Loans And Related Reserves Evaluated Separately And Collectively For Impairment [Abstract] |  |
Card Member loans evaluated individually for impairment | $ 347 | $ 346
Reserves on Card Member loans evaluated individually for impairment | 57 | 60
Card Member loans evaluated collectively for impairment | 67,531 | 64,919
Reserves on Card Member loans evaluated collectively for impairment | $ 1,445 | $ 1,163

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- Definition Represents cardmember loans evaluated collectively for impairment. + References No definition available. + Details
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- Definition Represents cardmember loans that are evaluated separately for impairment. + References No definition available. + Details
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- Definition Represents reserves on cardmember loans evaluated collectively for impairment. + References No definition available. + Details
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- Definition Represents reserves on cardmember loans that are evaluated separately for impairment. + References No definition available. + Details
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