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v3.25.0.1

Short-Term and Long-Term Debt - Schedule of Debt (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |  |
Current maturities of long-term debt | $ 300,000,000 | $ 250,000,000 |
Total short-term debt | 300,000,000 | 250,000,000 |
Term loan and subordinated notes | 995,000,000 | 995,000,000 |
Total long-term debt | $ 5,856,000,000 | 5,699,000,000 |
Debt repurchase option | 100.00% |  |
Repayments of debt | $ 100,000,000 | 500,000,000 | $ 300,000,000
Fixed interest rate | 5.00% |  |
Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 4,418,000,000 | 4,368,000,000 |
Term loan |  |  |
Debt Instrument [Line Items] |  |  |
Term loan and subordinated notes | 150,000,000 | 0 |
Capital securities |  |  |
Debt Instrument [Line Items] |  |  |
Capital securities | 218,000,000 | 218,000,000 |
Long-term debt |  |  |
Debt Instrument [Line Items] |  |  |
Unamortized premiums (discounts) | (6,000,000) | (6,000,000) |
Unamortized debt issuance costs | (30,000,000) | (30,000,000) |
Unamortized adjustments from discontinued hedges | 310,000,000 | 326,000,000 |
Fair value hedge on interest rate swap agreements | (199,000,000) | (172,000,000) |
Total long-term debt | 5,856,000,000 | 5,699,000,000 |
3.35% notes, due 2025 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 0 | 300,000,000 |
Debt instrument, interest rate, stated percentage | 3.35% |  |
3.625% notes, due 2026 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 400,000,000 | 400,000,000 |
Debt instrument, interest rate, stated percentage | 3.625% |  |
3.80% notes, due 2028 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 500,000,000 | 500,000,000 |
Debt instrument, interest rate, stated percentage | 3.80% |  |
3.05% notes, due 2030 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 500,000,000 | 500,000,000 |
Debt instrument, interest rate, stated percentage | 3.05% |  |
3.40% notes, due 2031 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 500,000,000 | 500,000,000 |
Debt instrument, interest rate, stated percentage | 3.40% |  |
3.40% notes, due 2032 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 300,000,000 | 300,000,000 |
Debt instrument, interest rate, stated percentage | 3.40% |  |
5.852% notes, due 2034 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 350,000,000 | 0 |
Debt instrument, interest rate, stated percentage | 5.852% |  |
6.15% notes, due 2036 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 243,000,000 | 243,000,000 |
Debt instrument, interest rate, stated percentage | 6.15% |  |
6.30% notes, due 2037 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 375,000,000 | 375,000,000 |
Debt instrument, interest rate, stated percentage | 6.30% |  |
7.00% notes, due 2040 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 500,000,000 | 500,000,000 |
Debt instrument, interest rate, stated percentage | 7.00% |  |
4.35% notes, due 2048 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 450,000,000 | 450,000,000 |
Debt instrument, interest rate, stated percentage | 4.35% |  |
4.375% notes, due 2050 | Senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 300,000,000 | 300,000,000 |
Debt instrument, interest rate, stated percentage | 4.375% |  |
Term loan due 2027 | Term loan |  |  |
Debt Instrument [Line Items] |  |  |
Term loan and subordinated notes | $ 150,000,000 | 0 |
Term loan due 2027 | Term loan | Variable Rate Component One |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 0.10% |  |
SOFR + 236 bps, due 2066 | Subordinated notes |  |  |
Debt Instrument [Line Items] |  |  |
Term loan and subordinated notes | $ 562,000,000 | 562,000,000 |
SOFR + 236 bps, due 2066 | Subordinated notes | Variable Rate Component One |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 2.36% |  |
SOFR + 236 bps, due 2066 | Capital securities |  |  |
Debt Instrument [Line Items] |  |  |
Capital securities | $ 160,000,000 | 160,000,000 |
SOFR + 236 bps, due 2066 | Capital securities | Variable Rate Component One |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 0.26161% |  |
SOFR + 236 bps, due 2066 | Capital securities | Variable Rate Component Two |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 2.36% |  |
SOFR + 204 bps, due 2067 | Subordinated notes |  |  |
Debt Instrument [Line Items] |  |  |
Term loan and subordinated notes | $ 433,000,000 | 433,000,000 |
SOFR + 204 bps, due 2067 | Subordinated notes | Variable Rate Component Two |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 2.04% |  |
SOFR + 204 bps, due 2067 | Capital securities |  |  |
Debt Instrument [Line Items] |  |  |
Capital securities | $ 58,000,000 | $ 58,000,000 |
SOFR + 204 bps, due 2067 | Capital securities | Variable Rate Component One |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 0.26161% |  |
SOFR + 204 bps, due 2067 | Capital securities | Variable Rate Component Two |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 2.04% |  |
Term Loan Due July 16, 2027 | Line of Credit | Secured Debt |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 1.375% | 1.125% |
Repayments of debt | $ 100,000,000 |  |
Debt instrument, face amount | $ 150,000,000 |  |

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