Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Other Liabilities Noncurrent [Abstract]
Unrecognized tax benefits	[1]	$ 178	$ 167
Long-term income taxes payable	[2]	3	31
Deferred gain on equity method investment	[3]	33	36
Other		9	4
Total other long term liabilities		$ 223	$ 238

[1] Refer to “Note 12: Income Taxes” for information on our unrecognized tax benefits. Amounts include accrued interest related to this liability.

[2] Amount relates to the long-term portion of transition tax related to 2017 Tax Act. Refer to “Note 12: Income Taxes” for additional information.

[3] Amount relates to long-term portion of a deferred income liability recorded as a result of an equity method investment made in the fourth quarter of 2019. Refer to “Note 5: Financial Instruments and Fair Value Measurements” for additional information.