Shareholders' Equity and Non-Controlling Interests (Noncontrolling Interest, P&L Allocation) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Subsidiary-specific information [Line Items]
Net loss	$ (48,036)	$ (44,370)	$ (222,229)	$ (49,502)	$ (49,265)	$ (30,804)	$ (314,635)	$ (129,571)
Less: net loss attributable to non-controlling interests	(7,488)			(10,786)			(64,941)	(29,937)
HSCP
Subsidiary-specific information [Line Items]
Net loss	$ (45,059)			$ (47,735)			$ (322,129)	$ (124,752)
HSCP/USCo2 weighted average ownership % of HSCP	16.62%			22.59%			20.00%	23.99%
Net loss allocated to HSCP/USCo2	$ (7,488)			$ (10,782)			$ (64,426)	$ (29,928)
Net loss allocated to other NCIs	$ 0			$ (4)			$ (515)	$ (9)