Earnings Per Share - Calculation of Fully Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Fully diluted earnings (loss) per share
Net income (loss) available to common stockholders	$ 43,091	$ 13,674
Allocations of net income (loss) to limited partnership interests, net of tax	19,157	5,651
Net income (loss) for fully diluted shares	$ 62,248	$ 19,325
Weighted-average shares:
Common stock outstanding	374,318	358,001
Partnership units	178,116	178,393
RSUs (Treasury stock method)	3,413	708
Other	1,221	1,340
Fully diluted weighted-average shares of common stock outstanding	557,068	538,442
Fully diluted earnings (loss) per share	$ 0.11	$ 0.04