Unpaid Claims and Claim Expense Short Duration Contracts (Schedule of Historical Claims Duration) (Details) - Life Insurance Product Line [Member]	Dec. 31, 2024
Americas [Member]
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Short-duration Insurance Contracts, Historical Claims Duration, Year One	36.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Two	45.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three	9.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four	2.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five	1.50%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six	1.10%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven	0.80%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight	1.00%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine	0.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten	0.60%
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	26.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Three	16.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Four	11.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Five	7.30%
Short-duration Insurance Contracts, Historical Claims Duration, Year Six	5.40%
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven	4.20%
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight	2.60%
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine	1.70%
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten	1.10%