Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2020	Dec. 31, 2019
Equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
General partners' capital account, units issued (in units)	208,224,536	189,975,396
General partners' capital account, units outstanding (in units)	208,224,536	189,975,396