Income Taxes - Components of Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Components Of Deferred Tax Assets And Liabilities [Abstract] | ||
| Deferred tax assets: Compensation and benefits | $ 372 | $ 323 |
| Deferred tax assets: Unrealized investment losses | 114 | 157 |
| Deferred tax assets: Loss carryforwards | 98 | 47 |
| Deferred tax assets: Foreign tax credit carryforwards | 83 | 40 |
| Deferred tax assets: Other | 235 | 253 |
| Gross deferred tax assets | 902 | 820 |
| Less: deferred tax valuation allowances | (20) | (29) |
| Deferred tax assets net of valuation allowances | 882 | 791 |
| Deferred tax liabilities: Goodwill and acquired indefinite-lived intangibles | 5,588 | 5,616 |
| Deferred tax liabilities: Acquired finite-lived intangibles | 45 | 65 |
| Deferred tax liabilities: Other | 80 | 89 |
| Gross deferred tax liabilities | 5,713 | 5,770 |
| Net deferred tax (liabilities) | $ (4,831) | $ (4,979) |
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- Definition Deferred Tax Assets Tax Deferred Expense Unrealized Investment Losses. No definition available.
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- Definition Deferred Tax Liabilities Acquired Finite Lived Intangibles No definition available.
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- Definition Total Gross deferred tax liability. No definition available.
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, before jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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