Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Other Liabilities Noncurrent [Abstract]
Unrecognized tax benefits	[1]	$ 167	$ 148
Long-term income taxes payable	[2]	31	31
Financing obligation, net of current portion	[3]		83
Other long-term liabilities	[3]	78
Operating lease liabilities, net of current portion	[3]	64
Deferred income liability	[4]	36
Other		4	20
Total other long term liabilities		$ 380	$ 282	[5]

[1] Refer to “Note 11: Income Taxes” for additional information on our unrecognized tax benefits. Amount includes 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 11: Income Taxes,” for additional information.

[3] Refer to “Note 2: Significant Accounting Policies” for further information regarding our leases, including the transition accounting and updated accounting policies upon adoption of ASC 842 in 2019.

[4] Amount relates to long-term portion of a deferred income liability recorded as a result of an equity method investment in the fourth quarter of 2019. Refer to “Note 7: Financial Instruments and Fair Value Measurements” for additional information.

[5] Refer to the below discussion regarding the transition accounting for operating and finance leases upon adoption of ASC 842.