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Fair Values of Financial Instruments | 6 Months Ended
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Jun. 30, 2024
Fair Value Disclosures [Abstract] |
Fair Values of Financial Instruments | Fair Values of Financial Instruments The fair values of “Cash and cash equivalents,” “Accounts receivable – net,” “Accounts payable,” and “Short-term debt,” approximate carrying values because of the short maturity of these financial instruments. The carrying value of corporate-owned life insurance (COLI) is recorded at cash surrender value and, accordingly, approximates fair value. There are no other assets or liabilities measured at fair value on a recurring basis at June 30, 2024 or December 31, 2023. The carrying amounts and estimated fair values, based on Level 1 inputs, of long-term debt consist of the following:
| June 30, 2024 |  | December 31, 2023
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
| ($ in millions)
Long-term debt, including current maturities | $ | (17,192) |  |  | $ | (15,695) |  |  | $ | (17,179) |  |  | $ | (16,631) |

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- Definition The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 820 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/820/tableOfContent + Details
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