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FINANCIAL INSTRUMENTS - Scheduled Debt Repayments (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings $ 5,109
Minimum annual payments under leases 67
7.73% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 7
7.70% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 5
7.37% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 32
8.05% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 15
6.38% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 200
5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 200
5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 200
6.45% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 300
6.35% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 600
7.50% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 250
5.95% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 850
5.7% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 850
5.25% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 750
5.75% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 850
2022  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
Minimum annual payments under leases 15
2022 | 7.73% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 7.70% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 7.37% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 8.05% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 6.38% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 6.45% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 6.35% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 7.50% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 5.95% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 5.7% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 5.25% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2022 | 5.75% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
Minimum annual payments under leases 12
2023 | 7.73% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 7.70% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 7.37% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 8.05% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 6.38% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 6.45% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 6.35% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 7.50% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 5.95% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 5.7% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 5.25% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2023 | 5.75% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
Minimum annual payments under leases 5
2024 | 7.73% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 7.70% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 7.37% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 8.05% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 6.38% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 6.45% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 6.35% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 7.50% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 5.95% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 5.7% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 5.25% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2024 | 5.75% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 12
Minimum annual payments under leases 5
2025 | 7.73% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 7
2025 | 7.70% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 5
2025 | 7.37% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 8.05% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 6.38% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 6.45% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 6.35% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 7.50% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 5.95% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 5.7% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 5.25% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2025 | 5.75% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 47
Minimum annual payments under leases 3
2026 | 7.73% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 7.70% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 7.37% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 32
2026 | 8.05% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 15
2026 | 6.38% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 6.45% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 6.35% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 7.50% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 5.95% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 5.7% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 5.25% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2026 | 5.75% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2027 and thereafter  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 5,050
Minimum annual payments under leases 27
2027 and thereafter | 7.73% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2027 and thereafter | 7.70% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2027 and thereafter | 7.37% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2027 and thereafter | 8.05% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 0
2027 and thereafter | 6.38% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 200
2027 and thereafter | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 200
2027 and thereafter | 5.80% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 200
2027 and thereafter | 6.45% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 300
2027 and thereafter | 6.35% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 600
2027 and thereafter | 7.50% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 250
2027 and thereafter | 5.95% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 850
2027 and thereafter | 5.7% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 850
2027 and thereafter | 5.25% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings 750
2027 and thereafter | 5.75% notes  
Scheduled debt repayments [abstract]  
Total undiscounted cash flows of borrowings $ 850