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Details of Certain Consolidated Statements of Income Lines (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Component of Other Income, Nonoperating [Line Items] |  |  |
Total other commissions and fees | $ 2,317 | $ 2,269 | $ 2,031
Foreign currency conversion revenue [Member] |  |  |
Component of Other Income, Nonoperating [Line Items] |  |  |
Total other commissions and fees | 855 | 861 | 838
Delinquency fees [Member] |  |  |
Component of Other Income, Nonoperating [Line Items] |  |  |
Total other commissions and fees | 604 | 567 | 605
Service fees [Member] |  |  |
Component of Other Income, Nonoperating [Line Items] |  |  |
Total other commissions and fees | 362 | 355 | 328
Other commissions and fees [Member] |  |  |
Component of Other Income, Nonoperating [Line Items] |  |  |
Total other commissions and fees | $ 496 | $ 486 | $ 260

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Period Type: | duration

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- Definition Fee and commission revenue earned from sources not otherwise specified in the existing taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number EITF85-24-1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Balance Type: | credit
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