Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities (Financial Instruments where Carrying Amounts and Fair Values May Differ) (Details) - USD ($) $ in Millions		Mar. 31, 2025	Dec. 31, 2024
Reported Value Measurement [Member]
Assets
Mortgage loans on real estate (net of valuation allowances)	[1]	$ 9,331	$ 8,839
Policy loans	[1]	1,284	1,321
Funds withheld at interest	[1]	5,487	5,596
Cash and cash equivalents	[1]	1,278	1,271
Short-term investments	[1]	55	50
Other invested assets	[1]	1,123	1,064
Accrued investment income	[1]	1,059	986
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures	[1]	65	64
Liabilities
Interest-sensitive contract liabilities	[1],[2]	27,262	25,817
Funds withheld payable	[1]	5,039	5,177
Long-term debt	[1]	5,734	5,042
Other Notes Payable			3,200
Estimate of Fair Value Measurement [Member]
Assets
Mortgage loans on real estate (net of valuation allowances)		8,864	8,422
Policy loans		1,284	1,321
Funds withheld at interest		5,187	5,296
Cash and cash equivalents		1,278	1,271
Short-term investments		55	50
Other invested assets		912	862
Accrued investment income		1,059	986
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures		86	88
Liabilities
Interest-sensitive contract liabilities	[2]	27,140	25,540
Funds withheld payable		4,817	4,960
Long-term Debt, Fair Value		5,593	4,836
Estimate of Fair Value Measurement [Member] | Fair Value Inputs Level 1 Member
Assets
Mortgage loans on real estate (net of valuation allowances)		0	0
Policy loans		0	0
Funds withheld at interest		0	0
Cash and cash equivalents		1,278	1,271
Short-term investments		55	50
Other invested assets		3	3
Accrued investment income		0	0
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures		0	0
Liabilities
Interest-sensitive contract liabilities	[2]	0	0
Funds withheld payable		0	0
Long-term Debt, Fair Value		0	0
Estimate of Fair Value Measurement [Member] | Fair Value Inputs Level 2 Member
Assets
Mortgage loans on real estate (net of valuation allowances)		0	0
Policy loans		1,284	1,321
Funds withheld at interest		0	0
Cash and cash equivalents		0	0
Short-term investments		0	0
Other invested assets		71	71
Accrued investment income		1,059	986
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures		0	0
Liabilities
Interest-sensitive contract liabilities	[2]	0	0
Funds withheld payable		0	0
Long-term Debt, Fair Value		0	0
Estimate of Fair Value Measurement [Member] | Fair Value Inputs Level 3 Member
Assets
Mortgage loans on real estate (net of valuation allowances)		8,864	8,422
Policy loans		0	0
Funds withheld at interest		5,187	5,296
Cash and cash equivalents		0	0
Short-term investments		0	0
Other invested assets		838	788
Accrued investment income		0	0
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures		86	88
Liabilities
Interest-sensitive contract liabilities	[2]	27,140	25,540
Funds withheld payable		4,817	4,960
Long-term Debt, Fair Value		5,593	4,836
Mortgage loans on real estate (net of valuation allowances)		9,331	8,839
Policy loans		1,284	1,321
Funds withheld at interest		5,328	5,436
Cash and cash equivalents		5,151	3,326
Short-term investments		454	363
Other invested assets		1,295	1,242
Accrued investment income		1,059	986
Interest-sensitive contract liabilities		36,614	35,095
Funds withheld payable		4,889	5,017
Long-term debt		5,734	5,042
Reinsurance Recoverables, Gross			$ 2,000
Other Notes Payable		$ 3,800

[1] Carrying values presented herein may differ from those in the Company’s condensed consolidated balance sheets because certain items within the respective financial statement captions may be measured at fair value on a recurring basis.

[2] Carrying values and estimated fair values presented herein include a reinsurance recoverable of $2.0 billion as of March 31, 2025 and December 31, 2024.