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Commitments and Contingencies - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Apr. 30, 2021
Loss Contingencies [Line Items]        
Unrecorded purchase obligation in contract year 2022 $ 8      
Unrecorded purchase obligation in contract year 2023 8      
Unrecorded purchase obligation in contract year 2024 8      
Unrecorded purchase obligation in contract year 2025 8      
Purchase obligation term     3 years  
Contract termination fees until mid-November 2020     $ 12  
Contract termination fees after mid-November 2020     14  
Fixed fee cap     14  
Variable fee cap     39  
Reduction in remaining commitment       $ 18
Remaining potential commitment       $ 10
Customer Concentration Risk        
Loss Contingencies [Line Items]        
Payment for purchase obligations $ 7 $ 8 $ 9