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Other Financial Data - Schedule of Other Non-current Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Other Financial Data [Abstract]    
Taxes payable $ 561 $ 525
Leases 65 76
Compensation and benefits 53 49
Deferred revenue 76 62
Other 140 165
Other non-current liabilities 895 877
Transition tax for accumulated foreign earnings, noncurrent $ 145 $ 145