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Revenue Costs to Obtain a Contract (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Capitalized upfront fees $ 67   $ 67   $ 92
Capitalized upfront fees (Note 20) 20   20   34
Capitalized upfront fees (Note 20) 47   47   $ 58
Capitalized upfront fees, amortization $ 7 $ 5 $ 20 $ 19