Policy Claims and Benefits Policy Claims and Benefits (Schedule of Historical Claims Duration) (Details) - Life Insurance Product Line [Member]	Dec. 31, 2021
Americas [Member]
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Short-duration Insurance Contracts, Historical Claims Duration, Year One	35.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two	42.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three	9.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four	2.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five	1.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six	1.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven	1.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight	1.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine	1.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten	1.10%
Asia Pacific [Member]
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Short-duration Insurance Contracts, Historical Claims Duration, Year One	15.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two	27.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three	16.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four	10.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five	7.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six	5.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven	3.90%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight	2.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine	2.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten	2.00%