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Debt and Credit Facilities - Long-Term Debt (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | May 31, 2022 | May 31, 2021
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Long-term debt, gross | $ 6,019 | $ 6,015 |  |
Adjustments for unamortized gains on interest rate swap terminations | (1) | (1) |  |
Less: current portion | (1,313) | (1) |  |
Long-term debt | $ 4,705 | 6,013 |  |
4.0% senior notes due 2024 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 4.00% |  | 4.00% |
Long-term debt, gross | $ 313 | 312 |  |
1.75% senior convertible notes due 2024 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 1.75% |  |  |
1.75% senior convertible notes due 2024 | Convertible Debt |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 1.75% |  |  |
Long-term debt, gross | $ 1,000 | 1,000 |  |
6.5% debentures due 2025 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 6.50% |  |  |
6.5% debentures due 2025 | Debenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt, gross | $ 70 | 70 |  |
7.5% debentures due 2025 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 7.50% |  |  |
7.5% debentures due 2025 | Debenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt, gross | $ 252 | 252 |  |
4.6% senior notes due 2028 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 4.60% |  |  |
Long-term debt, gross | $ 695 | 694 |  |
6.5% debentures due 2028 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 6.50% |  |  |
6.5% debentures due 2028 | Debenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt, gross | $ 25 | 24 |  |
4.6% senior notes due 2029 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 4.60% |  |  |
Long-term debt, gross | $ 802 | 803 |  |
2.3% senior notes due 2030 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 2.30% |  |  |
Long-term debt, gross | $ 894 | 893 |  |
2.75% senior notes due 2031 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 2.75% |  |  | 2.75%
Long-term debt, gross | $ 845 | 845 |  |
5.60% senior notes due 2032 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 5.60% |  | 5.60% |
Long-term debt, gross | $ 595 | 595 |  |
6.625% senior notes due 2037 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 6.625% |  |  |
Long-term debt, gross | $ 38 | 38 |  |
5.5% senior notes due 2044 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 5.50% |  |  |
Long-term debt, gross | $ 397 | 397 |  |
5.22% debentures due 2097 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 5.22% |  |  |
5.22% debentures due 2097 | Debenture |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt, gross | $ 93 | $ 92 |  |

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