Equity, Capital and Other Interests - Changes in Company's Issued and Outstanding Common Shares and Units (Details) - shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Equity Capital And Other Interests [Abstract]
Common Stock, Shares, Outstanding	372,302,000	371,670,884
Common Shares Issued:
Conversion of OP Units	1,153,963	99,737
Exercise of share options	1,401,755	219,922
Employee Share Purchase Plan (ESPP)	59,297	69,986
Restricted share grants, net	85,573	178,720
Common Stock, Shares, Outstanding	375,002,588	372,239,249
Units
Total Units Outstanding	13,858,073	13,731,315
Restricted unit grants, net	155,638	247,822
Conversion of OP Units to Common Shares	(1,153,963)	(99,737)
Total Units Outstanding	12,859,748	13,879,400
Common Shares And Units Outstanding	387,862,336	386,118,649
Units Ownership Interest in Operating Partnership	3.30%	3.60%