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Guarantees (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Type of Guarantee
Maximum potential amount of undiscounted future payments	$ 48,000	$ 45,000
Amount of related liability	86	111
Return and Merchant Protection [Member]
Type of Guarantee
Maximum potential amount of undiscounted future payments	42,000	37,000
Amount of related liability	49	44
Other Guarantees [Member]
Type of Guarantee
Maximum potential amount of undiscounted future payments	6,000	8,000
Amount of related liability	$ 37	$ 67

X

- Definition

Type Of Guarantee.

+ References

No definition available.

+ Details

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X

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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X

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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- Details

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X

- Details

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