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Shareholders' Equity - OCI Components (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Pretax |  |  |  |  |
Total other comprehensive income (loss) | $ 991 | $ (2,467) |  | $ (637) |
Income Tax Benefit (Expense) |  |  |  |  |
Total other comprehensive income (loss) | (211) | 563 |  | 139 |
Net of Tax |  |  |  |  |
Arising during the period | 756 | (1,985) |  | (71) |
Reclassification to net income | 24 | 81 |  | (427) |
Total other comprehensive income (loss), net of tax | 780 | (1,904) | [1] | (498) | [1]
Reclassification in net income |  |  |  |  |
Interest and debt expense | (324) | (198) | [2] | (191) | [2]
Reclassification |  |  |  |  |
Reclassification in net income |  |  |  |  |
Interest and debt expense | 1 | 1 |  | 1 |
Net unrealized gains (losses) on securities |  |  |  |  |
Pretax |  |  |  |  |
Total other comprehensive income (loss) | 1,043 | (3,958) |  | (1,175) |
Income Tax Benefit (Expense) |  |  |  |  |
Total other comprehensive income (loss) | (241) | 882 |  | 254 |
Net of Tax |  |  |  |  |
Arising during the period | 779 | (3,143) |  | (478) |
Reclassification to net income | 23 | 67 |  | (443) |
Total other comprehensive income (loss), net of tax | 802 | (3,076) |  | (921) |
Net unrealized gains (losses) on securities arising during the period |  |  |  |  |
Pretax |  |  |  |  |
Arising during the period | 1,038 | (4,146) |  | (622) |
Income Tax Benefit (Expense) |  |  |  |  |
Arising during the period | (240) | 918 |  | 137 |
Net of Tax |  |  |  |  |
Arising during the period | 798 | (3,228) |  | (485) |
Reclassification of net (gains) losses on securities included in net income |  |  |  |  |
Pretax |  |  |  |  |
Reclassification to net income | 29 | 85 |  | (561) |
Income Tax Benefit (Expense) |  |  |  |  |
Reclassification to net income | (6) | (18) |  | 118 |
Net of Tax |  |  |  |  |
Reclassification to net income | 23 | 67 |  | (443) |
Impact of benefit reserves and reinsurance recoverables |  |  |  |  |
Pretax |  |  |  |  |
Arising during the period | (24) | 103 |  | 8 |
Income Tax Benefit (Expense) |  |  |  |  |
Arising during the period | 5 | (18) |  | (1) |
Net of Tax |  |  |  |  |
Arising during the period | (19) | 85 |  | 7 |
Net unrealized gains (losses) on derivatives |  |  |  |  |
Pretax |  |  |  |  |
Arising during the period | 3 |  |  |  |
Reclassification to net income | (1) | (1) |  | (1) |
Total other comprehensive income (loss) | 2 | (1) |  | (1) |
Income Tax Benefit (Expense) |  |  |  |  |
Arising during the period | (1) |  |  |  |
Reclassification to net income | 1 | 0 |  | 0 |
Total other comprehensive income (loss) | 0 | 0 |  | 0 |
Net of Tax |  |  |  |  |
Arising during the period | 2 | 0 |  | 0 |
Reclassification to net income | 0 | (1) |  | (1) |
Total other comprehensive income (loss), net of tax | 2 | (1) |  | (1) |
Effect of changes in discount rate assumptions on certain long-duration contracts |  |  |  |  |
Pretax |  |  |  |  |
Total other comprehensive income (loss) | (69) | 1,095 |  | 361 |
Income Tax Benefit (Expense) |  |  |  |  |
Total other comprehensive income (loss) | 15 | (234) |  | (77) |
Net of Tax |  |  |  |  |
Arising during the period | (54) | 861 |  | 284 |
Reclassification to net income | 0 | 0 |  | 0 |
Total other comprehensive income (loss), net of tax | (54) | 861 |  | 284 |
Effect of changes in instrument-specific credit risk on MRBs |  |  |  |  |
Pretax |  |  |  |  |
Total other comprehensive income (loss) | (83) | 517 |  | 127 |
Income Tax Benefit (Expense) |  |  |  |  |
Total other comprehensive income (loss) | 18 | (110) |  | (27) |
Net of Tax |  |  |  |  |
Arising during the period | (65) | 407 |  | 100 |
Reclassification to net income | 0 | 0 |  | 0 |
Total other comprehensive income (loss), net of tax | (65) | 407 |  | 100 |
Defined benefit plans |  |  |  |  |
Pretax |  |  |  |  |
Total other comprehensive income (loss) | 19 | 96 |  | 67 |
Income Tax Benefit (Expense) |  |  |  |  |
Total other comprehensive income (loss) | (4) | (20) |  | (14) |
Net of Tax |  |  |  |  |
Arising during the period | 14 | 61 |  | 36 |
Reclassification to net income | 1 | 15 |  | 17 |
Total other comprehensive income (loss), net of tax | 15 | 76 |  | 53 |
Prior service credits and costs |  |  |  |  |
Pretax |  |  |  |  |
Total other comprehensive income (loss) | (1) | (1) |  | (3) |
Income Tax Benefit (Expense) |  |  |  |  |
Total other comprehensive income (loss) | 0 | 0 |  | 1 |
Net of Tax |  |  |  |  |
Total other comprehensive income (loss), net of tax | (1) | (1) |  | (2) |
Net gains (losses) |  |  |  |  |
Pretax |  |  |  |  |
Total other comprehensive income (loss) | 20 | 97 |  | 70 |
Income Tax Benefit (Expense) |  |  |  |  |
Total other comprehensive income (loss) | (4) | (20) |  | (15) |
Net of Tax |  |  |  |  |
Total other comprehensive income (loss), net of tax | 16 | 77 |  | 55 |
Foreign currency translation |  |  |  |  |
Pretax |  |  |  |  |
Total other comprehensive income (loss) | 79 | (216) |  | (16) |
Income Tax Benefit (Expense) |  |  |  |  |
Total other comprehensive income (loss) | 1 | 45 |  | 3 |
Net of Tax |  |  |  |  |
Arising during the period | 80 | (171) |  | (13) |
Reclassification to net income | 0 | 0 |  | 0 |
Total other comprehensive income (loss), net of tax | $ 80 | $ (171) |  | $ (13) |
[1] | Certain prior period amounts have been restated. See Note 3 for more information.
[2] | Certain prior period amounts have been restated. See Note 3 for more information.

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