Policyholders' Liabilities (Future Policy Benefits) (Details) - USD ($) $ in Millions |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract] | ||
| Life insurance | $ 172,586 | $ 161,406 |
| Individual and group annuities and supplementary contracts | 67,090 | 63,486 |
| Other contract liabilities | 14,849 | 13,173 |
| Subtotal future policy benefits excluding unpaid claims and claim settlement expenses | 254,525 | 238,065 |
| Unpaid claims and claim settlement expenses | 2,792 | 2,843 |
| Total future policy benefits | $ 257,317 | $ 240,908 |
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- Definition Amount of accrued obligation to policyholders that relates to insured events for long-duration contracts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate amount of policy reserves (provided for future obligations including unpaid claims and claims adjustment expenses) and policy benefits (liability for future policy benefits) as of the balance sheet date; grouped amount of all the liabilities associated with the company's insurance policies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of accrued obligation to policyholders that relates to insured events under individual and group annuities and supplementary insurance contracts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of accrued obligation to policyholders that relates to insured events under long-term life insurance contracts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of accrued obligation to policyholders that relates to insured events under other insurance contracts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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