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Goodwill and Other Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Finite-lived Intangible Assets [Roll Forward] |  |  |
Gross amount | $ 706 | $ 470 | $ 422
Acquired Finite-lived Intangible Asset, Amount | 236 | 48 |
Accumulated amortization | 259 | 207 | 174
Amortization of Intangible Assets | 48 | 33 | 21
Finite Lived Intangible Assets, Translation Adjustments, Amortization | 4 |  |
Other (primarily Fx) | 0 |  |
Net amount | 447 | 263 |
Databases and software |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Gross amount | 126 | 109 | 82
Acquired Finite-lived Intangible Asset, Amount | 17 | 27 |
Accumulated amortization | 80 | 70 | 64
Amortization of Intangible Assets | 10 | 6 |
Finite Lived Intangible Assets, Translation Adjustments, Amortization | 0 |  |
Other (primarily Fx) | 0 |  |
Net amount | 46 | 39 |
Content |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Gross amount | 139 | 139 | 139
Acquired Finite-lived Intangible Asset, Amount | 0 | 0 |
Accumulated amortization | 31 | 17 | 3
Amortization of Intangible Assets | 14 | 14 |
Finite Lived Intangible Assets, Translation Adjustments, Amortization | 0 |  |
Other (primarily Fx) | 0 |  |
Net amount | 108 | 122 |
Customer relationships |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Gross amount | 225 | 115 | 104
Acquired Finite-lived Intangible Asset, Amount | 110 | 11 |
Accumulated amortization | 55 | 43 | 36
Amortization of Intangible Assets | 11 | 7 |
Finite Lived Intangible Assets, Translation Adjustments, Amortization | 1 |  |
Other (primarily Fx) | 0 |  |
Net amount | 170 | 72 |
Tradenames |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Gross amount | 45 | 45 | 37
Acquired Finite-lived Intangible Asset, Amount | 1 | 8 |
Accumulated amortization | 30 | 27 | 24
Amortization of Intangible Assets | 3 | 3 |
Finite Lived Intangible Assets, Translation Adjustments, Amortization | 0 |  |
Other (primarily Fx) | (1) |  |
Net amount | 15 | 18 |
Other intangibles |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Gross amount | 171 | 62 | 60
Acquired Finite-lived Intangible Asset, Amount | 108 | 2 |
Accumulated amortization | 63 | 50 | 47
Amortization of Intangible Assets | 10 | 3 |
Finite Lived Intangible Assets, Translation Adjustments, Amortization | 3 |  |
Other (primarily Fx) | 1 |  |
Net amount | $ 108 | $ 12 |

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- Definition The aggregate amount assigned to a major class of finite-lived intangible assets acquired 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 Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph a(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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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -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 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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