Revenue Contract Balance Rollforward (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Beginning Balance Deferred Revenue, Noncurrent		$ 132
Ending Balance Deferred Revenue, Noncurrent		217	$ 132
Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized		0	0
Accounting Standards Update 2014-09 [Member]
Beginning Balance Contract with Customer, Asset, Gross	[1]	36	4
Contract with Customer, Asset Increase (Decrease)		5	32	[2]
Contract with Customer, Asset, Reclassified to Receivable	[3]	(2)	0
Ending Balance Contract with Customer, Asset, Gross		39	36	[1]
Beginning Balance Deferred Revenue, Current	[1]	13	5
Deferred Revenue, Period Increase (Decrease)		17	19	[2]
Deferred Revenue, Revenue Recognized	[3]	(7)	(11)
Ending Balance Deferred Revenue, Current		23	13	[1]
Beginning Balance Deferred revenue - related parties	[1]	65	42
Deferred Revenue - Related Party, Period Increase (Decrease)		55	60	[2]
Deferred Revenue - Related Parties, Revenue Recognized	[3]	(67)	(37)
Ending Balance Deferred Revenue, Current, Related Parties		53	65	[1]
Beginning Balance Deferred Revenue, Noncurrent	[1]	56	5
Deferred Revenue, Noncurrent, Period Increase (Decrease)		34	51	[2]
Deferred Revenue, Noncurrent, Revenue Recognized	[3]	0	0
Ending Balance Deferred Revenue, Noncurrent		90	56	[1]
Beginning Balance Deferred Revenue, Noncurrent, Related Parties	[1]	52	43
Deferred Revenue, Noncurrent, Related Party, Period Increase (Decrease)		3	9	[2]
Deferred Revenue, Noncurrent, Related Parties, Revenue Recognized	[3]	0	0
Ending Balance Deferred Revenue, Noncurrent, Related Parties		$ 55	$ 52	[1]

[1] Balance represents ASC 606 portion of each respective line item.

[2] Includes opening balances related to the Merger.

[3] No significant revenue was recognized related to past performance obligations for the years ended December 31, 2019 and 2018.