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Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2023
Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Other Comprehensive Income (Loss) | Other Comprehensive Income (Loss) Shareholders’ equity included the following activity in accumulated other comprehensive income (loss) in 2023, 2022 and 2021:
| At December 31,
In millions | 2023 |  | 2022 |  | 2021
Net unrealized investment gains (losses): |  |  |  |  |
Beginning of year balance | $ | (1,519) |  |  | $ | 798 |  |  | $ | 1,214 |
Adoption of new accounting standard ($0, $0 and $181 pretax) (1) | — |  |  | — |  |  | 140 |
Other comprehensive income (loss) before reclassifications ($612, $(3,021) and $(644) pretax) | 603 |  |  | (2,556) |  |  | (530) |
Amounts reclassified from accumulated other comprehensive income (loss) ($566, $315 and $(32) pretax) (2) | 487 |  |  | 239 |  |  | (26) |
Other comprehensive income (loss) | 1,090 |  |  | (2,317) |  |  | (556) |
End of year balance | (429) |  |  | (1,519) |  |  | 798 |
Change in discount rate on long-duration insurance reserves: |  |  |  |  |
Beginning of period balance | 219 |  |  | (651) |  |  | — |
Adoption of new accounting standard ($0, $0 and $(1,166) pretax) (1) | — |  |  | — |  |  | (906) |
Other comprehensive income (loss) before reclassifications ($(92), $1,126, and $328 pretax) | (67) |  |  | 870 |  |  | 255 |
Other comprehensive income (loss) | (67) |  |  | 870 |  |  | 255 |
End of period balance | 152 |  |  | 219 |  |  | (651) |
Foreign currency translation adjustments: |  |  |  |  |
Beginning of year balance | — |  |  | — |  |  | 7 |
Other comprehensive loss before reclassifications | — |  |  | — |  |  | (7) |
Other comprehensive loss | — |  |  | — |  |  | (7) |
End of year balance | — |  |  | — |  |  | — |
Net cash flow hedges: |  |  |  |  |
Beginning of year balance | 239 |  |  | 222 |  |  | 248 |
Other comprehensive income before reclassifications ($25, $38 and $0 pretax) | 19 |  |  | 28 |  |  | — |
Amounts reclassified from accumulated other comprehensive income ($(19), $(15) and $(34) pretax) (3) | (14) |  |  | (11) |  |  | (26) |
Other comprehensive income (loss) | 5 |  |  | 17 |  |  | (26) |
End of year balance | 244 |  |  | 239 |  |  | 222 |
Pension and other postretirement benefits: |  |  |  |  |
Beginning of year balance | (203) |  |  | (35) |  |  | (55) |
Other comprehensive income (loss) before reclassifications ($(81), $(229) and $20 pretax) | (61) |  |  | (170) |  |  | 15 |
Amounts reclassified from accumulated other comprehensive loss ($0, $3 and $6 pretax) (4) | — |  |  | 2 |  |  | 5 |
Other comprehensive income (loss) | (61) |  |  | (168) |  |  | 20 |
End of year balance | (264) |  |  | (203) |  |  | (35) |
Total beginning of year accumulated other comprehensive income (loss) | (1,264) |  |  | 334 |  |  | 1,414 |
Adoption of new accounting standard (1) | — |  |  | — |  |  | (766) |
Total other comprehensive income (loss) | 967 |  |  | (1,598) |  |  | (314) |
Total end of year accumulated other comprehensive income (loss) | $ | (297) |  |  | $ | (1,264) |  |  | $ | 334 |
_______________________________________ (1)Reflects the adoption of ASU 2018-12, Targeted Improvements to the Accounting for Long-Duration Contracts (Topic 944) during the year ended December 31, 2021. See Note 1 ‘‘Significant Accounting Policies’’ for additional information. (2)Amounts reclassified from accumulated other comprehensive income (loss) for specifically identified debt securities are included in net investment income in the consolidated statements of operations. (3)Amounts reclassified from accumulated other comprehensive income for specifically identified cash flow hedges are included within interest expense in the consolidated statements of operations. The Company expects to reclassify $15 million, net of tax, in net gains associated with its cash flow hedges into net income within the next 12 months. (4)Amounts reclassified from accumulated other comprehensive loss for specifically identified pension and other postretirement benefits are included in other income in the consolidated statements of operations.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//220/tableOfContent + Details
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