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Policy Claims and Benefits Policy Claims and Benefits (Schedule of Historical Claims Duration) (Details) - Life Insurance Product Line [Member] | Dec. 31, 2018
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Americas [Member] |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Short-duration Insurance Contracts, Historical Claims Duration, Year One | 34.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two | 41.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three | 8.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four | 2.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five | 1.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six | 1.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven | 1.50%
Asia Pacific [Member] |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Short-duration Insurance Contracts, Historical Claims Duration, Year One | 15.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two | 28.40%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three | 17.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four | 10.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five | 7.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six | 5.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven | 4.80%

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- Definition Percentage of average annual payout, after reinsurance, in the fifth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=99384497&loc=SL65671329-158438 + Details
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- Definition Percentage of average annual payout, after reinsurance, in the first year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=99384497&loc=SL65671329-158438 + Details
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