Change in Accounting Principle - Changes in Balance Sheet Items (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Common units		$ 45,122
Additional paid-in capital	$ 7,693,115	25,036
Accumulated other comprehensive loss	(15,203)	(31,093)
Accumulated deficit	(4,402,960)	(4,107,927)
Total stockholders'/members’ equity (deficit)	$ 3,275,125	(4,068,862)	$ (3,665,081)	$ (3,532,912)
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Common units		54,950
Additional paid-in capital		25,036
Accumulated other comprehensive loss		(31,093)
Accumulated deficit		(4,117,755)
Total stockholders'/members’ equity (deficit)		$ (4,068,862)