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Accumulated Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2025
Accumulated Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | Accumulated other comprehensive income (AOCI) includes changes in unrealized gains and losses on investments, changes in pension obligations and changes in life policy reserves, reinsurance recoverable and other as follows:
(Dollars in millions) |  | Three months ended June 30, |  |  |  |
|  | 2025 |  |  | 2024 |  |  |  |  |  |  |
|  | Before tax |  | Income tax |  | Net |  |  | Before tax |  | Income tax |  | Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, beginning of period |  | $ | (486) |  |  | $ | (105) |  |  | $ | (381) |  |  |  | $ | (625) |  |  | $ | (134) |  |  | $ | (491) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
OCI before investment gains and losses, net, recognized in net income |  | 16 |  |  | 3 |  |  | 13 |  |  |  | (93) |  |  | (21) |  |  | (72) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment gains and losses, net, recognized in net income |  | 12 |  |  | 3 |  |  | 9 |  |  |  | 18 |  |  | 4 |  |  | 14 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
OCI |  | 28 |  |  | 6 |  |  | 22 |  |  |  | (75) |  |  | (17) |  |  | (58) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, end of period |  | $ | (458) |  |  | $ | (99) |  |  | $ | (359) |  |  |  | $ | (700) |  |  | $ | (151) |  |  | $ | (549) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pension obligations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, beginning of period |  | $ | 74 |  |  | $ | 17 |  |  | $ | 57 |  |  |  | $ | 30 |  |  | $ | 8 |  |  | $ | 22 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
OCI excluding amortization recognized in net income |  | — |  |  | — |  |  | — |  |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization recognized in net income |  | (1) |  |  | — |  |  | (1) |  |  |  | 1 |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
OCI |  | (1) |  |  | — |  |  | (1) |  |  |  | 1 |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, end of period |  | $ | 73 |  |  | $ | 17 |  |  | $ | 56 |  |  |  | $ | 31 |  |  | $ | 8 |  |  | $ | 23 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Life policy reserves, reinsurance recoverable and other: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, beginning of period |  | $ | 68 |  |  | $ | 15 |  |  | $ | 53 |  |  |  | $ | 34 |  |  | $ | 7 |  |  | $ | 27 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
OCI before investment gains and losses, net, recognized in net income |  | 1 |  |  | — |  |  | 1 |  |  |  | 37 |  |  | 8 |  |  | 29 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment gains and losses, net, recognized in net income |  | — |  |  | — |  |  | — |  |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
OCI |  | 1 |  |  | — |  |  | 1 |  |  |  | 37 |  |  | 8 |  |  | 29 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, end of period |  | $ | 69 |  |  | $ | 15 |  |  | $ | 54 |  |  |  | $ | 71 |  |  | $ | 15 |  |  | $ | 56 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of AOCI: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, beginning of period |  | $ | (344) |  |  | $ | (73) |  |  | $ | (271) |  |  |  | $ | (561) |  |  | $ | (119) |  |  | $ | (442) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments OCI |  | 28 |  |  | 6 |  |  | 22 |  |  |  | (75) |  |  | (17) |  |  | (58) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pension obligations OCI |  | (1) |  |  | — |  |  | (1) |  |  |  | 1 |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Life policy reserves, reinsurance recoverable and other OCI |  | 1 |  |  | — |  |  | 1 |  |  |  | 37 |  |  | 8 |  |  | 29 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total OCI |  | 28 |  |  | 6 |  |  | 22 |  |  |  | (37) |  |  | (9) |  |  | (28) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, end of period |  | $ | (316) |  |  | $ | (67) |  |  | $ | (249) |  |  |  | $ | (598) |  |  | $ | (128) |  |  | $ | (470) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(Dollars in millions) |  | Six months ended June 30,
|  | 2025 |  |  | 2024
|  | Before tax |  | Income tax |  | Net |  |  | Before tax |  | Income tax |  | Net
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, beginning of period |  | $ | (553) |  |  | $ | (119) |  |  | $ | (434) |  |  |  | $ | (570) |  |  | $ | (123) |  |  | $ | (447) |
OCI before investment gains and losses, net, recognized in net income |  | 81 |  |  | 17 |  |  | 64 |  |  |  | (158) |  |  | (34) |  |  | (124) |
Investment gains and losses, net, recognized in net income |  | 14 |  |  | 3 |  |  | 11 |  |  |  | 28 |  |  | 6 |  |  | 22 |
OCI |  | 95 |  |  | 20 |  |  | 75 |  |  |  | (130) |  |  | (28) |  |  | (102) |
AOCI, end of period |  | $ | (458) |  |  | $ | (99) |  |  | $ | (359) |  |  |  | $ | (700) |  |  | $ | (151) |  |  | $ | (549) |
Pension obligations: |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, beginning of period |  | $ | 75 |  |  | $ | 17 |  |  | $ | 58 |  |  |  | $ | 30 |  |  | $ | 8 |  |  | $ | 22 |
OCI excluding amortization recognized in net income |  | — |  |  | — |  |  | — |  |  |  | — |  |  | — |  |  | — |
Amortization recognized in net income |  | (2) |  |  | — |  |  | (2) |  |  |  | 1 |  |  | — |  |  | 1 |
OCI |  | (2) |  |  | — |  |  | (2) |  |  |  | 1 |  |  | — |  |  | 1 |
AOCI, end of period |  | $ | 73 |  |  | $ | 17 |  |  | $ | 56 |  |  |  | $ | 31 |  |  | $ | 8 |  |  | $ | 23 |
Life policy reserves, reinsurance recoverable and other: |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, beginning of period |  | $ | 85 |  |  | $ | 18 |  |  | $ | 67 |  |  |  | $ | (13) |  |  | $ | (3) |  |  | $ | (10) |
OCI before investment gains and losses, net, recognized in net income |  | (16) |  |  | (3) |  |  | (13) |  |  |  | 84 |  |  | 18 |  |  | 66 |
Investment gains and losses, net, recognized in net income |  | — |  |  | — |  |  | — |  |  |  | — |  |  | — |  |  | — |
OCI |  | (16) |  |  | (3) |  |  | (13) |  |  |  | 84 |  |  | 18 |  |  | 66 |
AOCI, end of period |  | $ | 69 |  |  | $ | 15 |  |  | $ | 54 |  |  |  | $ | 71 |  |  | $ | 15 |  |  | $ | 56 |
Summary of AOCI: |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI, beginning of period |  | $ | (393) |  |  | $ | (84) |  |  | $ | (309) |  |  |  | $ | (553) |  |  | $ | (118) |  |  | $ | (435) |
Investments OCI |  | 95 |  |  | 20 |  |  | 75 |  |  |  | (130) |  |  | (28) |  |  | (102) |
Pension obligations OCI |  | (2) |  |  | — |  |  | (2) |  |  |  | 1 |  |  | — |  |  | 1 |
Life policy reserves, reinsurance recoverable and other OCI |  | (16) |  |  | (3) |  |  | (13) |  |  |  | 84 |  |  | 18 |  |  | 66 |
Total OCI |  | 77 |  |  | 17 |  |  | 60 |  |  |  | (45) |  |  | (10) |  |  | (35) |
AOCI, end of period |  | $ | (316) |  |  | $ | (67) |  |  | $ | (249) |  |  |  | $ | (598) |  |  | $ | (128) |  |  | $ | (470) |

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- Definition Accumulated Other Comprehensive Income [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 + Details
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