Earnings Per Common Share - Basic and Diluted Net Income Per Common Unit (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basic
Net income attributable to common shares	$ 869,300,000	$ (612,000,000)
Weighted-average common shares outstanding (in shares)	354,230,092	348,239,759
Net income (loss) per common share (usd per share)	$ 2.45	$ (1.76)
Diluted
Net loss attributable to common shares	$ 869,300,000	$ (612,000,000)
Weighted-average common shares outstanding (in shares)	360,504,780	348,239,759
Net loss per common share (usd per share)	$ 2.41	$ (1.76)