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Revenue - Recognized (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Total revenue $ 3,162 $ 2,564  
Net contract assets 33   $ 23
Over time      
Disaggregation of Revenue [Line Items]      
Total revenue 1,717 1,390  
Point in time      
Disaggregation of Revenue [Line Items]      
Total revenue $ 1,445 $ 1,174