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Long-Term Debt (Tables) | 6 Months Ended
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Jun. 30, 2024
Debt Disclosure [Abstract] |
Long-Term Debt |
|  | June 30, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
|  | (Dollars in Millions) |
4.250% Senior Notes, due 2024 |  | $ | 400 |  |  | $ | 400 |
7% Debentures, due 2025 |  |  | 125 |  |  |  | 125 |
3.450% Senior Notes, due 2027 |  |  | 299 |  |  |  | 299 |
3.500% Senior Notes, due 2027 |  |  | 493 |  |  |  | 492 |
2.500% Senior Notes, due 2030 |  |  | 472 |  |  |  | 472 |
2.400% Senior Notes, due 2031 |  |  | 890 |  |  |  | 890 |
6.25% Senior Notes, due 2037 |  |  | 228 |  |  |  | 228 |
4.250% Senior Notes, due 2047 |  |  | 590 |  |  |  | 590 |
3.200% Senior Notes, due 2051 |  |  | 850 |  |  |  | 850 |
Total debt |  |  | 4,347 |  |  |  | 4,346 |
Less: current maturities |  |  | (400 | ) |  |  | (400 | )
Long-term debt |  | $ | 3,947 |  |  | $ | 3,946 |

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