v2.4.0.6

Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Deferred tax assets: |  |
Employee benefit plans | $ 940 | $ 929
Net operating loss and tax credit carryforwards | 484 | 430
Other accrued expenses | 154 | 161
Investment basis differences | 17 | 17
Other | 100 | 66
Gross deferred tax assets | 1,695 | 1,603
Valuation allowance on deferred tax assets | (219) | (257)
Total | 1,476 | 1,346
Deferred tax liabilities: |  |
Intangibles | (1,333) | (1,420)
Deferred revenue | (83) | (49)
Other accrued expenses | (121) | (41)
Unrealized investment gains | (21) | (5)
Unrealized foreign exchange gains | (23) | (23)
Other | (40) | (75)
Total | (1,621) | (1,613)
Net deferred tax (liability) asset | $ (145) | $ (267)

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- Definition The tax effect as of the balance sheet date of the amount of the estimated future tax reductions attributable to a difference between the tax basis and the generally accepted accounting principles basis of a company's investments which will decrease future taxable income when such basis difference reverses. + References No definition available. + Details
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- Definition The sum of the tax effects as of the balance sheet date of the amounts of all future tax deductions arising from temporary differences between tax basis and generally accepted accounting principles basis recognition of assets, liabilities, revenues and expenses, which can only be deducted for tax purposes when permitted under enacted tax laws ( before the valuation allowance, if any, to reduce such sum amount to net realizable value). Includes any tax benefit realized in deferred tax assets for significant impacts of tax planning strategies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 289 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 -Glossary Deferred Tax Asset -URI http://asc.fasb.org/extlink&oid=6510090 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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