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LONG-TERM DEBT - Schedule of Long-term Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Long-term Debt    
Long-term debt, gross $ 17,955 $ 17,955
Unamortized premium, net 1,099 1,152
Debt issuance costs (60) (106)
Net book value of debt 18,994 19,001
Long-term finance leases, included in Long-term debt 590 591
Current finance leases, included in Current maturities of long-term debt 153 146
Total debt and finance leases 19,737 19,738
Less: current maturities of financing leases (153) (146)
Less: current maturities of long-term debt (1,194) (1,056)
Long-term debt, net $ 18,390 18,536
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
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
5.875% senior notes due 2025 | Senior Notes    
Long-term Debt    
Debt instrument interest rate stated percentage 5.875%  
Long-term debt, gross $ 606 606
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 (5.890% and 5.750% as of June 30, 2024 and December 31, 2023, respectively) | Variable Rate Bonds    
Long-term Debt    
Debt instrument, variable rate 5.89% 5.75%
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
0.000% loan due 2039    
Long-term Debt    
Debt instrument interest rate stated percentage 0.00%  
Long-term debt, gross $ 19 19
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