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Chapter 11 - Long Term Debt Maturity (Details) - USD ($)
$ in Millions
Feb. 22, 2022
Dec. 31, 2021
Feb. 10, 2021
Dec. 31, 2020
Debt Instrument [Line Items]        
Carrying value   $ 5,662 $ 6,200 $ 5,662
Subsequent Event        
Debt Instrument [Line Items]        
2022 $ 0      
2023 40      
2024 40      
2025 40      
2026 and thereafter 788      
Carrying value $ 908