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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Valuation and Qualifying Accounts      
Balance at beginning of period $ 100 $ 98 $ 54
Additions Charged to Costs and Expenses 51 37 49
Deductions 28 35 5
Balance at end of period 123 100 98
Valuation allowance for deferred tax assets      
Valuation and Qualifying Accounts      
Balance at beginning of period 73 69 31
Additions Charged to Costs and Expenses 30 19 38
Deductions 13 15 0
Balance at end of period 90 73 69
Allowance for obsolete inventory parts      
Valuation and Qualifying Accounts      
Balance at beginning of period 24 27 22
Additions Charged to Costs and Expenses 5 4 5
Deductions 0 7 0
Balance at end of period 29 24 27
Allowance for doubtful accounts      
Valuation and Qualifying Accounts      
Balance at beginning of period 3 2 1
Additions Charged to Costs and Expenses 16 14 6
Deductions 15 13 5
Balance at end of period $ 4 $ 3 $ 2