Fair Value Measurement - Schedule of Financial Liabilities Not Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Current portion of long term debt	$ 43	$ 37
Long term debt	2,839	4,041
Total debt, net	2,882	4,078
Carrying Value [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Current portion of long term debt	43	37
Long term debt	2,839	4,041
Total debt, net	2,882	4,078
Fair Value [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Current portion of long term debt	43	37
Long term debt	2,848	4,090
Total debt, net	$ 2,891	$ 4,127