Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
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		$ 141,214	$ 336,138	$ 978,844
Adjustment for net income (loss) attributable to OP Units and DownREIT Units		165	(3,020)	(6,146)
Numerator for diluted earnings per share		$ 141,379	$ 333,118	$ 972,698
Denominator for basic earnings per share - weighted average shares (in shares)		462,185,000	424,976,000	415,451,000
Effect of dilutive securities:
Employee stock options (in shares)		20,000	0	0
Non-vested restricted shares (in shares)		1,058,000	447,000	519,000
OP Units and DownREIT Units (in shares)		1,865,000	1,396,000	1,396,000
Employee stock purchase program (in shares)		30,000	22,000	21,000
Dilutive potential common shares (in shares)		2,973,000	1,865,000	1,936,000
Denominator for diluted earnings per share - adjusted weighted average shares (in shares)		465,158,000	426,841,000	417,387,000
Basic earnings per share (in USD per share)		$ 0.31	$ 0.79	$ 2.36
Diluted earnings per share (in USD per share)	[1]	$ 0.30	$ 0.78	$ 2.33
Stock Option
Effect of dilutive securities:
Anti-dilutive securities (in shares)		0	5,187,250	0

[1] Includes adjustment to the numerator for income (loss) attributable to OP Units and DownREIT Units