Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013 item	Mar. 31, 2012
Operating revenues by products and services
Other operating revenue	$ 4,513	$ 4,610
Surcharge amount on customers' bills	128	135
Number of groups of products and services	4
Number of groups of products and services included in segment revenue	3
Strategic services
Operating revenues by products and services
Other operating revenue	2,142	2,058
Legacy services
Operating revenues by products and services
Other operating revenue	1,974	2,141
Data integration
Operating revenues by products and services
Other operating revenue	140	145
Other
Operating revenues by products and services
Other operating revenue	$ 257	$ 266

Represents the number of groups of products and services of the reporting entity.

No definition available.

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- Definition

Represents the number of groups of products and services of the reporting entity that are included in the segment revenue.

+ References

No definition available.

+ Details

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- Definition

Amount of the universal taxes and surcharges that are reflected in the statement of income (included in both operating revenues and expenses).

+ References

No definition available.

+ Details

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- Details

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- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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