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Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Other Income and Expenses [Abstract] |  |  |
Employee related costs (1) | $ 3,626 | $ 3,520 | $ 3,515
Third party staffing costs | 1,477 | 1,573 | 1,423
General and administrative expenses | 828 | 669 | 670
Pension, postretirement and postemployment benefit costs | 246 | 98 | 147
Premium taxes, other taxes, and licenses & fees | 660 | 608 | 629
Commissions and other variable expenses | 5,819 | 5,265 | 5,463
Capitalization of DAC | (2,917) | (2,614) | (2,751)
Amortization of DAC and VOBA | 1,952 | 1,831 | 2,037
Amortization of negative VOBA | (26) | (29) | (35)
Interest expense on debt | 1,045 | 938 | 920
Total other expenses | 12,710 | 11,859 | 12,018
Net change in cash surrender value of investments, net of premiums paid | $ (140) | $ 93 | $ (144)

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