Revenue Recognition - Contract Balances (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Movement in Deferred Revenue [Roll Forward]
Deferred revenue, beginning balance	$ 0
Deferred revenue, ending balance	1
Third Parties
Movement in Deferred Revenue [Roll Forward]
Deferred revenue, beginning balance	0
Additions	1
Reductions	0
Deferred revenue, ending balance	1
Related Parties
Movement in Deferred Revenue [Roll Forward]
Deferred revenue, beginning balance	0
Additions	1
Reductions	0
Deferred revenue, ending balance	$ 1