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LEASES - Operating Lease Payments (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Dec. 30, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]      
2021 $ 13    
2022 13    
2023 11    
2024 9    
2025 7    
2026 and thereafter 15    
Total future minimum lease payments 68    
Less: imputed interest (8)    
Total operating lease liabilities 60    
Current portion 11 $ 17 $ 0
Non-current portion $ 49 $ 48 $ 10