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Details of Certain Consolidated Statements of Income Lines (Details 1) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Component of Other Income, Nonoperating [Line Items] |  |
Total other revenues | $ 537 | $ 553
Global Network Services Partner Revenues [Member] |  |
Component of Other Income, Nonoperating [Line Items] |  |
Total other revenues | 144 | 151
Net Gain (Loss) on Investment Securities [Member] |  |
Component of Other Income, Nonoperating [Line Items] |  |
Total other revenues | 36 | 24
Other Revenues [Member] |  |
Component of Other Income, Nonoperating [Line Items] |  |
Total other revenues | $ 357 | $ 378

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- Definition Represents other forms of revenue earned, excluding interest, which is not otherwise specified in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.4) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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