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Fair Values of Financial Instruments (Tables) | 9 Months Ended
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Sep. 30, 2024
Fair Value Disclosures [Abstract] |
Schedule of Carrying Amounts and Estimated Fair Values | The carrying amounts and estimated fair values, based on Level 1 inputs, of long-term debt consist of the following:
| September 30, 2024 |  | December 31, 2023
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
| ($ in millions)
Long-term debt, including current maturities | $ | (17,199) |  |  | $ | (16,654) |  |  | $ | (17,179) |  |  | $ | (16,631) |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 + Details
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