Fair Value of Financial Instruments - Schedule of Carrying Value and Estimated Fair Value of Financial Instruments Carried at Other Than Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Assets
Investments in unconsolidated affiliates	$ 5,299	$ 5,166
Trade and notes receivables, net of allowance	473	473
Total
Total Estimated Fair Value
Assets
FHLB common stock	146	155
Commercial mortgage loans	3,303	3,025
Residential mortgage loans	4,668	4,424
Investments in unconsolidated affiliates	4,753	4,608
Policy loans	157	147
Other invested assets	95	93
Company-owned life insurance	894	887
Trade and notes receivables, net of allowance	473	473
Total	14,489	13,812
Liabilities
Investment contracts, included in Contractholder funds	52,123	51,027
Debt	4,059	4,204
Total	56,182	55,231
Carrying Amount
Assets
FHLB common stock	146	155
Commercial mortgage loans	3,515	3,242
Residential mortgage loans	4,944	4,649
Investments in unconsolidated affiliates	4,753	4,608
Policy loans	157	147
Other invested assets	95	93
Company-owned life insurance	894	887
Trade and notes receivables, net of allowance	473	473
Total	14,977	14,254
Liabilities
Investment contracts, included in Contractholder funds	57,094	56,184
Debt	4,402	4,400
Total	61,496	60,584
Level 1
Assets
FHLB common stock	0	0
Commercial mortgage loans	0	0
Residential mortgage loans	0	0
Investments in unconsolidated affiliates	0	0
Policy loans	0	0
Other invested assets	18	18
Company-owned life insurance	0	0
Trade and notes receivables, net of allowance	0	0
Total	18	18
Liabilities
Investment contracts, included in Contractholder funds	0	0
Debt	0	0
Total	0	0
Level 2
Assets
FHLB common stock	146	155
Commercial mortgage loans	0	0
Residential mortgage loans	0	0
Investments in unconsolidated affiliates	0	0
Policy loans	0	0
Other invested assets	0	0
Company-owned life insurance	0	0
Trade and notes receivables, net of allowance	0	0
Total	146	155
Liabilities
Investment contracts, included in Contractholder funds	0	0
Debt	4,059	4,204
Total	4,059	4,204
Level 3
Assets
FHLB common stock	0	0
Commercial mortgage loans	3,303	3,025
Residential mortgage loans	4,668	4,424
Investments in unconsolidated affiliates	0	0
Policy loans	157	147
Other invested assets	0	0
Company-owned life insurance	894	887
Trade and notes receivables, net of allowance	473	473
Total	9,495	8,956
Liabilities
Investment contracts, included in Contractholder funds	52,123	51,027
Debt	0	0
Total	52,123	51,027
NAV
Assets
Investments in unconsolidated affiliates	4,753	4,608
Other invested assets	77	75
Total	$ 4,830	$ 4,683

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Amount, after allowance for credit loss, of accounts and financing receivable. Includes, but is not limited to, notes and loan receivable.

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