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Reserves For Losses (Details 3) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Card Member Loans And Related Reserves Evaluated Separately And Collectively For Impairment [Abstract]
Card Member loans evaluated individually for impairment	$ 288	$ 279
Reserves on Card Member loans evaluated individually for impairment	52	53
Card Member loans evaluated collectively for impairment	57,118	58,294
Reserves on Card Member loans evaluated collectively for impairment	$ 960	$ 975

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- Definition

Represents cardmember loans evaluated collectively for impairment.

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No definition available.

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- Definition

Represents cardmember loans that are evaluated separately for impairment.

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No definition available.

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- Definition

Represents reserves on cardmember loans evaluated collectively for impairment.

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No definition available.

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- Definition

Represents reserves on cardmember loans that are evaluated separately for impairment.

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No definition available.

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