Revenue Contract Balances (Details) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Long-term deferred revenue, beginning balance		$ 217
Long-term deferred revenue, ending balance		261
Liability, change in timeframe, performance obligation satisfied, revenue recognized		0	$ 0
ASC 606
Contract assets, beginning balance	[1]	39	36
Contract assets, additions/(deletions)		(20)	(8)	[2]
Contract assets, revenue recognized	[3]	(1)	(1)	[2]
Contract assets, ending balance		18	27	[2]
Deferred revenue, beginning balance	[1]	23	13
Deferred revenue, additions/(deletions)		8	4	[2]
Deferred revenue, revenue recognized	[3]	(5)	(3)	[2]
Deferred revenue, ending balance		26	14	[2]
Deferred revenue - related parties, beginning balance	[1]	53	65
Deferred revenue - related party, additions/(deletions)		48	18	[2]
Deferred revenue - related parties, revenue recognized	[3]	(29)	(30)	[2]
Deferred revenue - related parties, ending balance		72	53	[2]
Long-term deferred revenue, beginning balance	[1]	90	56
Long-term deferred revenue, additions/(deletions)		11	14	[2]
Long-term deferred revenue, revenue recognized	[3]	0	0	[2]
Long-term deferred revenue, ending balance		101	70	[2]
Long-term deferred revenue - related parties, beginning balance	[1]	55	52
Long-term deferred revenue - related party, additions/(deletions)		(2)	(2)	[2]
Long-term deferred revenue - related parties, revenue recognized	[3]	0	0	[2]
Long-term deferred revenue - related parties, ending balance		$ 53	$ 50	[2]

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

[2] Financial information for the six months ended June 30, 2019 has been retrospectively adjusted for the acquisition of ANDX. See Notes 1 and 3.

[3] No significant revenue was recognized related to past performance obligations in the current periods.