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v3.25.3

Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Mar. 14, 2025 | Dec. 31, 2024
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Obligations under finance leases due at various dates through 2054 |  | $ 133 |  | $ 145
Long-Term Debt and Lease Obligation, Including Current Maturities |  | 12,765 |  | 12,527
Unamortized debt issuance costs | [1] | (77) |  | (56)
Long-Term Debt and Lease Obligation, Current |  | (1,033) |  | (1,393)
Long-term debt, net of unamortized deferred financing costs |  | 11,655 |  | 11,078
Senior unsecured notes due 2025, interest rate of 1.250% |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 0 |  | 311
Debt Instrument, Interest Rate, Stated Percentage |  | 1.25% |  |
Senior unsecured notes due 2025, interest rate of 6.050% |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 0 |  | 1,000
Debt Instrument, Interest Rate, Stated Percentage |  | 6.05% |  |
Senior unsecured notes due 2026, interest rate of 1.400% |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 400 |  | 400
Debt Instrument, Interest Rate, Stated Percentage |  | 1.40% |  |
Senior unsecured notes due 2026, interest rate of 5.277%(1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 526 |  | 1,040
Debt Instrument, Interest Rate, Stated Percentage |  | 5.277% |  |
Senior unsecured notes due 2027, interest rate of 2.125% |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 586 |  | 518
Debt Instrument, Interest Rate, Stated Percentage |  | 2.125% |  |
Senior unsecured notes due 2027, interest rate of 6.665%(1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt | [2] | $ 1,500 |  | 2,000
Debt Instrument, Interest Rate, Stated Percentage |  | 6.665% |  |
Senior unsecured term loan due 2027(2) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt | [3] | $ 330 |  | $ 880
Debt Instrument, Interest Rate, Stated Percentage |  | 5.986% |  | 6.047%
Senior unsecured notes due 2028, interest rate of 0.625% |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 587 |  | $ 519
Debt Instrument, Interest Rate, Stated Percentage |  | 0.625% |  |
Senior unsecured notes due 2028, interest rate of 6.850%(1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt | [2] | $ 1,000 |  | 1,000
Debt Instrument, Interest Rate, Stated Percentage |  | 6.85% |  |
Senior unsecured notes due 2029, interest rate of 5.587%(1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt | [2] | $ 587 |  | 519
Debt Instrument, Interest Rate, Stated Percentage |  | 5.587% |  |
Senior unsecured notes due 2029, interest rate of 6.830%(1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt | [2] | $ 750 |  | 750
Debt Instrument, Interest Rate, Stated Percentage |  | 6.83% |  |
Senior unsecured notes due 2030, interest rate of 6.500% |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 700 |  | 0
Debt Instrument, Interest Rate, Stated Percentage |  | 6.50% | 6.50% |
Senior unsecured notes due 2030, interest rate of 7.050%(1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt | [2] | $ 999 |  | 999
Debt Instrument, Interest Rate, Stated Percentage |  | 7.05% |  |
5.000% Senior Notes due 2031 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 881 |  | 0
Debt Instrument, Interest Rate, Stated Percentage |  | 5.00% | 5.00% |
Senior unsecured notes due 2032, interest rate of 6.879%(1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt | [2] | $ 1,000 |  | 1,000
Debt Instrument, Interest Rate, Stated Percentage |  | 6.879% |  |
Senior unsecured notes due 2033, interest rate of 7.200%(1) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt | [2] | $ 1,000 |  | 1,000
Debt Instrument, Interest Rate, Stated Percentage |  | 7.20% |  |
Senior unsecured notes due 2033, interest rate of 6.750% |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured debt |  | $ 1,100 |  | 0
Debt Instrument, Interest Rate, Stated Percentage |  | 6.75% | 6.75% |
Pollution control and industrial revenue bonds due at various dates through 2030(3) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Other long-term debt | [4] | $ 125 |  | 126
Pollution control and industrial revenue bonds due at various dates through 2030(3) | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.10% |  |
Pollution control and industrial revenue bonds due at various dates through 2030(3) | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.00% |  |
Bank loans due at various dates through 2030(4) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Other long-term debt | [5] | $ 561 |  | $ 320
Long-term debt, weighted average interest rate, at point in time |  | 2.40% |  | 2.80%
[1] | Related to the Company's long-term debt, excluding obligations under finance leases.
[2] | In November 2024, S&P Global Ratings downgraded the Company's credit rating to BB+ and on February 12, 2025, Moody's Ratings downgraded the Company's credit ratings to Ba1, which together had the effect of increasing the interest rates by up to 50 basis points on certain senior unsecured notes, effective beginning at various dates through January 19, 2026.
[3] | The interest rate was 5.986% and 6.047% as of September 30, 2025 and December 31, 2024, respectively.
[4] | Interest rates range from 4.1% to 5.0%.
[5] | The weighted average interest rate was 2.4% and 2.8% as of September 30, 2025 and December 31, 2024, respectively.

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