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Debt - Debt With Interest Rates And Maturities (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Instrument [Line Items] |  |
Finance lease, liability, statement of financial position [Extensible Enumeration] | Long-term debt | Long-term debt
Finance leases | $ 13 | $ 17
Discounts, premiums, and debt issuance costs | (902) | (933)
Total debt | 17,206 | 17,179
Less current maturities and short-term debt | (555) | (4)
Long-term debt | $ 16,651 | 17,175
4.08% maturing to 2029 |  |
Debt Instrument [Line Items] |  |
Long-term debt, weighted average interest rate | 4.08% |
Notes and debentures | $ 2,981 | 2,981
4.33% maturing 2030 to 2034 |  |
Debt Instrument [Line Items] |  |
Long-term debt, weighted average interest rate | 4.33% |
Notes and debentures | $ 2,883 | 2,883
4.28% maturing 2037 to 2064 |  |
Debt Instrument [Line Items] |  |
Long-term debt, weighted average interest rate | 4.28% |
Notes and debentures | $ 10,847 | 10,847
5.22% maturing 2097 to 2121 |  |
Debt Instrument [Line Items] |  |
Long-term debt, weighted average interest rate | 5.22% |
Notes and debentures | $ 1,384 | $ 1,384

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