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Acquisitions and Dispositions (Details 3) (USD $)
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12 Months Ended | 12 Months Ended | ||||||||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2011
Hewitt Associates, Inc (Hewitt)
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Dec. 31, 2010
Hewitt Associates, Inc (Hewitt)
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Oct. 02, 2010
Hewitt Associates, Inc (Hewitt)
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Dec. 31, 2011
Hewitt Associates, Inc (Hewitt)
Customer relationships
Y
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Oct. 02, 2010
Hewitt Associates, Inc (Hewitt)
Customer relationships
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Oct. 02, 2010
Hewitt Associates, Inc (Hewitt)
Registered trademarks
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Dec. 31, 2011
Hewitt Associates, Inc (Hewitt)
Technology
Y
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Oct. 02, 2010
Hewitt Associates, Inc (Hewitt)
Technology
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| Business acquisition, purchase price allocation | ||||||||||
| Working capital | $ 348,000,000 | |||||||||
| Property, equipment, and capitalized software | 297,000,000 | |||||||||
| Identifiable intangible assets | 1,800,000,000 | 890,000,000 | 215,000,000 | |||||||
| Other non-current assets | 344,000,000 | |||||||||
| Long-term debt | 346,000,000 | |||||||||
| Other non-current liabilities | 360,000,000 | |||||||||
| Net deferred tax liability | 1,021,000,000 | |||||||||
| Net assets acquired | 2,167,000,000 | |||||||||
| Goodwill | 50,000,000 | 2,715,000,000 | 2,765,000,000 | |||||||
| Total consideration transferred | 103,000,000 | 5,089,000,000 | 4,932,000,000 | |||||||
| Other current assets | 31,000,000 | |||||||||
| Net deferred tax liability included in other non-current assets | 30,000,000 | |||||||||
| Other current liabilities | 7,000,000 | |||||||||
| Net deferred tax liability included in other non-current liabilities | $ 1,100,000,000 | |||||||||
| Weighted average useful life (in years) | 12 | 7 | ||||||||
| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to other current assets of the acquired entity. No definition available.
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| X | ||||||||||
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- Definition
Amount of deferred tax assets or liabilities for the differences between the values assigned and the tax bases of assets and liabilities in a business combination, net of any valuation allowance for deferred tax assets, included in other noncurrent assets. No definition available.
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| X | ||||||||||
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- Definition
Amount of deferred tax assets or liabilities for the differences between the values assigned and the tax bases of assets and liabilities in a business combination, net of any valuation allowance for deferred tax assets, included in other noncurrent liabilities. No definition available.
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| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to property, equipment and capitalized software to be used in ongoing operations. No definition available.
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| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to working capital which includes cash and cash equivalents, short-term investments, client receivables, other current assets, accounts payable and other current liabilities. No definition available.
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| X | ||||||||||
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to other current liabilities of the acquired entity. Does not include amounts allocated to the current portion of long-term debt, accounts payable and accrued expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax assets or liabilities for the differences between the values assigned and the tax bases of assets and liabilities in a business combination, net of any valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to the noncurrent portion of the long-term debt assumed from the acquired entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to noncurrent assets of the acquired entity, except for property plant and equipment, intangible assets, and goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to other noncurrent liabilities of the acquired entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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