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Assumed Life Reinsurance Programs Involving Minimum Benefit Guarantees Under Annuity Contracts (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified |
9 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2014
Guaranteed Minimum Death Benefit [Member]
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Dec. 31, 2013
Guaranteed Minimum Death Benefit [Member]
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Sep. 30, 2014
Guaranteed Minimum Income Benefit [Member]
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Dec. 31, 2013
Guaranteed Minimum Income Benefit [Member]
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Sep. 30, 2013
Guaranteed Minimum Income Benefit [Member]
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Jun. 30, 2013
Guaranteed Minimum Income Benefit [Member]
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Dec. 31, 2012
Guaranteed Minimum Income Benefit [Member]
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Sep. 30, 2014
Guaranteed Minimum Deaths Benefits And Guaranteed Living Benefits [Member]
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Dec. 31, 2013
Guaranteed Minimum Deaths Benefits And Guaranteed Living Benefits [Member]
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Sep. 30, 2014
Guaranteed Living Benefits [Member]
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Dec. 31, 2013
Guaranteed Living Benefits [Member]
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| Guaranteed Minimum Benefits [Line Items] | ||||||||||||
| Reported liabilities | $ 108 | $ 100 | $ 566 | $ 427 | $ 746 | $ 880 | $ 1,400 | |||||
| Fair value derivative adjustment in liability | 317 | 193 | ||||||||||
| Net amount at risk | 520 | 586 | 241 | 136 | ||||||||
| Mortality percentage according to Annuity 2000 mortality table | 100.00% | |||||||||||
| Discounting assumption used in the calculation of the benefit reserve averaging - lower range | 2.00% | 3.50% | 3.50% | |||||||||
| Discounting assumption used in the calculation of the benefit reserve averaging - upper range | 3.00% | 4.50% | 4.50% | |||||||||
| Total claim amount payable, if all of the Company's cedants' policyholders covered were to die immediately | 629 | 39 | ||||||||||
| GMBD net amount of risk | 75 | 73 | ||||||||||
| GLB net amount of risk | $ 168 | $ 141 | ||||||||||
| Average attained age of all policyholders under all benefits reinsured, years | 69 years |