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Acquisitions and Investments (Details Textual) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 12 Months Ended
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Sep. 30, 2009 | Dec. 31, 2011 Acquisitions Y | Dec. 31, 2010 Acquisitions Y | Dec. 31, 2009 Y Acquisitions
Acquisitions and Investments (Textual) [Abstract] |  |  |  |
Aggregate purchase price of acquisitions |  |  | $ 500 |
Intangible assets |  | 273 |  |
Weighted average life |  | 5 |  |
Other Acquisitions [Member] |  |  |  |
Acquisitions and Investments (Textual) [Abstract] |  |  |  |
Number of acquisitions |  | 9 | 12 | 9
Aggregate purchase price of acquisitions |  | 1,038 | 556 | 573
Percentage of IntelliServ operations sold | 45.00% |  |  |
Intangible assets |  | 131 | 299 | 115
Weighted average life |  | 16 | 18 | 11
Customer Relationships [Member] |  |  |  |
Acquisitions and Investments (Textual) [Abstract] |  |  |  |
Intangible assets |  | 119 | 116 | 60
Weighted average life |  | 14 | 15 | 9
Trademarks [Member] |  |  |  |
Acquisitions and Investments (Textual) [Abstract] |  |  |  |
Intangible assets |  | 39 | 59 | 46
Weighted average life |  | 35 | 30 | 18
Other Intangible Assets [Member] |  |  |  |
Acquisitions and Investments (Textual) [Abstract] |  |  |  |
Intangible assets |  | $ 115 | $ 124 | $ 9
Weighted average life |  | 12 | 15 | 7

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- Definition Number of acquisitions. + References No definition available. + Details
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- Definition Percentage Of Operations Sold. + References No definition available. + Details
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- Definition The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph a(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -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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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -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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