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Investments (Net Investment Income) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Net Investment Income [Line Items] |  |  |
Less: Investment expenses | $ 2,248 | $ 2,262 | $ 1,284
Net investment income | 21,273 | 19,908 | 15,916
Securities Investment |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 22,430 | 20,987 | 18,498
Net investment income | 20,182 | 18,725 | 17,214
Fixed maturity securities AFS |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 13,598 | 12,990 | 11,490
Equity Securities |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 23 | 32 | 36
FVO securities |  |  |
Net Investment Income [Line Items] |  |  |
Net investment income | 205 | 188 | (127)
Mortgage loans (1) |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 4,734 | 4,761 | 3,539
Policy loans |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 453 | 471 | 460
Real Estate and Real Estate Joint Ventures |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 440 | 438 | 1,200
OLPI (1) |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 965 | 454 | 858
Cash, cash equivalents and short-term investments (1) |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 1,122 | 1,011 | 358
Operating joint ventures |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 175 | 38 | 51
Other Investments |  |  |
Net Investment Income [Line Items] |  |  |
Gross Investment Income, Operating | 715 | 604 | 633
Unit-linked investments |  |  |
Net Investment Income [Line Items] |  |  |
Net investment income | $ 1,091 | $ 1,183 | $ (1,298)

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- Definition Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 + Details
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