Policy Claims and Benefits Policy Claims and Benefits (Schedule of Historical Claims Duration) (Details) - Life Insurance Product Line [Member]	Dec. 31, 2022
Americas [Member]
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Short-duration Insurance Contracts, Historical Claims Duration, Year One	35.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two	44.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three	9.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four	2.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five	1.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six	1.40%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven	1.10%
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	0.80%
Asia Pacific [Member]
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Short-duration Insurance Contracts, Historical Claims Duration, Year One	14.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two	27.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three	16.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four	11.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five	7.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six	5.40%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven	3.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight	2.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine	2.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten	1.70%