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LONG-TERM DEBT - Schedule of Long-term Debt (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Long-term Debt |  |
Long-term debt, gross | $ 17,936 | $ 17,958
Unamortized premium, net | 1,239 | 1,261
Debt issuance costs | (70) | (73)
Net book value of debt | 19,105 | 19,146
Finance lease liabilities, non-current | 540 | 546
Current finance leases | 139 | 143
Total debt and finance leases | 19,784 | 19,835
Less: current maturities of financing leases | (139) | (143)
Less: current maturities of long-term debt | 0 | (22)
Long-term debt, net | $ 19,645 | 19,670
8.750% medium-term notes due 2023 | Medium-term Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 8.75% |
Long-term debt, gross | $ 0 | 22
2.900% senior notes due 2024 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 2.90% |
Long-term debt, gross | $ 654 | 654
6.950% senior notes due 2024 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 6.95% |
Long-term debt, gross | $ 291 | 291
3.450% senior notes due 2024 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 3.45% |
Long-term debt, gross | $ 111 | 111
5.875% senior notes due 2025 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 5.875% |
Long-term debt, gross | $ 606 | 606
3.500% senior notes due 2025 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 3.50% |
Long-term debt, gross | $ 137 | 137
5.500% senior notes due 2025 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 5.50% |
Long-term debt, gross | $ 465 | 465
5.550% senior notes due 2026 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 5.55% |
Long-term debt, gross | $ 870 | 870
3.200% senior notes due 2026 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 3.20% |
Long-term debt, gross | $ 182 | 182
3.400% senior notes due 2026 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 3.40% |
Long-term debt, gross | $ 284 | 284
7.500% debentures due 2026 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.50% |
Long-term debt, gross | $ 112 | 112
8.500% senior notes due 2027 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 8.50% |
Long-term debt, gross | $ 489 | 489
3.000% senior notes due 2027 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 3.00% |
Long-term debt, gross | $ 216 | 216
7.125% debentures due 2027 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.125% |
Long-term debt, gross | $ 150 | 150
7.000% debentures due 2027 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.00% |
Long-term debt, gross | $ 48 | 48
6.625% debentures due 2028 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 6.625% |
Long-term debt, gross | $ 14 | 14
7.150% debentures due 2028 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.15% |
Long-term debt, gross | $ 232 | 232
7.200% senior debentures due 2028 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.20% |
Long-term debt, gross | $ 82 | 82
6.375% senior notes due 2028 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 6.375% |
Long-term debt, gross | $ 578 | 578
7.200% debentures due 2029 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.20% |
Long-term debt, gross | $ 135 | 135
7.950% debentures due 2029 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.95% |
Long-term debt, gross | $ 116 | 116
8.450% senior notes due 2029 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 8.45% |
Long-term debt, gross | $ 116 | 116
3.500% senior notes due 2029 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 3.50% |
Long-term debt, gross | $ 286 | $ 286
Variable rate bonds due 2030 (5.480% and 5.320% as of March 31, 2023 and December 31, 2022, respectively) | Variable Rate Bonds |  |
Long-term Debt |  |
Debt instrument, variable rate | 5.48% | 5.32%
Long-term debt, gross | $ 68 | $ 68
8.875% senior notes due 2030 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 8.875% |
Long-term debt, gross | $ 1,000 | 1,000
6.625% senior notes due 2030 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 6.625% |
Long-term debt, gross | $ 1,449 | 1,449
6.125% senior notes due 2031 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 6.125% |
Long-term debt, gross | $ 1,143 | 1,143
7.500% senior notes due 2031 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.50% |
Long-term debt, gross | $ 900 | 900
7.875% senior notes due 2031 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.875% |
Long-term debt, gross | $ 500 | 500
6.450% senior notes due 2036 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 6.45% |
Long-term debt, gross | $ 1,727 | 1,727
Zero Coupon senior notes due 2036 | Senior Notes |  |
Long-term Debt |  |
Long-term debt, gross | $ 673 | 673
4.300% senior notes due 2039 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 4.30% |
Long-term debt, gross | $ 247 | 247
7.950% senior notes due 2039 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.95% |
Long-term debt, gross | $ 325 | 325
6.200% senior notes due 2040 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 6.20% |
Long-term debt, gross | $ 737 | 737
4.500% senior notes due 2044 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 4.50% |
Long-term debt, gross | $ 191 | 191
4.625% senior notes due 2045 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 4.625% |
Long-term debt, gross | $ 296 | 296
6.600% senior notes due 2046 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 6.60% |
Long-term debt, gross | $ 1,117 | 1,117
4.400% senior notes due 2046 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 4.40% |
Long-term debt, gross | $ 424 | 424
4.100% senior notes due 2047 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 4.10% |
Long-term debt, gross | $ 258 | 258
4.200% senior notes due 2048 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 4.20% |
Long-term debt, gross | $ 304 | 304
4.400% senior notes due 2049 | Senior Notes |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 4.40% |
Long-term debt, gross | $ 280 | 280
7.730% debentures due 2096 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.73% |
Long-term debt, gross | $ 58 | 58
7.500% debentures due 2096 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.50% |
Long-term debt, gross | $ 60 | 60
7.250% debentures due 2096 | Debentures |  |
Long-term Debt |  |
Debt instrument interest rate stated percentage | 7.25% |
Long-term debt, gross | $ 5 | $ 5

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