Investments (Mortgage Loans - Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	$ (879)	$ (736)
Financing Receivable, Purchase	2,200	1,500	$ 3,100
Financing Receivable, Sale	168	254	0
Mortgage Loans Contributed To Joint Ventures	218	15	$ 489
Mortgage Loans, Gross	$ 89,812	$ 93,227
Percentage of Mortgage Loans Classified as Performing	98.00%	99.00%
Real Estate Acquired Through Foreclosure Of Mortgage Loans	$ 61
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Receivable	249	$ 277
Mortgage Loans, Gross	56,310	60,326
Amortized Cost of Mortgage Loans Delinquent during the period	182
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Receivable	117	95
Mortgage Loans, Gross	14,189	13,096
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Receivable	199	204
Mortgage Loans, Gross	$ 19,313	$ 19,805

Amortized Cost of Mortgage Loans Delinquent during the period

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Mortgage Loans Contributed To Joint Ventures

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The percentage of all mortgage loans that are classified as performing.

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Real Estate Acquired Through Foreclosure Of Mortgage Loans

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Amount of decrease in financing receivable from sale. Excludes net investment in lease.

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