Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Numerator for basic and diluted earnings per share - net income attributable to common stockholders		$ 336,138	$ 978,844	$ 1,232,432
Adjustment for net income (loss) attributable to OP units		(3,020)	(6,146)	806
Numerator for diluted earnings per share		$ 333,118	$ 972,698	$ 1,233,238
Denominator for basic earnings per share - weighted average shares (in shares)		424,976	415,451	401,845
Effect of dilutive securities:
Non-vested restricted shares (in shares)		447	519	835
Redeemable OP units (in shares)		1,396	1,396	1,112
Employee stock purchase program (in shares)		22	21	16
Dilutive potential common shares (in shares)		1,865	1,936	1,963
Denominator for diluted earnings per share - adjusted weighted average shares (in shares)		426,841	417,387	403,808
Basic earnings per share (in USD per share)		$ 0.79	$ 2.36	$ 3.07
Diluted earnings per share (in USD per share)	[1]	$ 0.78	$ 2.33	$ 3.05
Anti-dilutive securities (in shares)				4,935,804
Stock Option
Effect of dilutive securities:
Anti-dilutive securities (in shares)		5,187,250

[1] Includes adjustment to the numerator for income (loss) attributable to OP unitholders