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Investments (Mortgage Loans - Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums | $ (806) |  | $ (806) |  | $ (736)
Financing Receivable, Purchase | $ 263 | $ 193 | $ 747 | $ 1,000 |
Percentage of Mortgage Loans Classified as Performing | 99.00% |  | 99.00% |  | 99.00%
Mortgage Loans Contributed To Joint Ventures | $ 218 |  | $ 218 |  |
Commercial Mortgage Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Interest Receivable | 269 |  | 269 |  | $ 277
Amortized Cost of Mortgage Loans Foreclosed during the period | 182 |  |  |  |
Amortized Cost of Mortgage Loans Delinquent during the period |  |  | 182 |  |
Residential Mortgage Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Interest Receivable | 97 |  | 97 |  | 95
Agricultural Mortgage Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Interest Receivable | $ 193 |  | $ 193 |  | $ 204

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481628/310-20-40-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
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