Equity, Capital and Other Interests - Changes in Company's Issued and Outstanding Common Shares and Units (Details) - shares	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Equity Capital And Other Interests [Abstract]
Common Stock, Shares, Outstanding	371,670,884	369,405,161
Common Shares Issued:
Conversion of OP Units	97,363	188,406
Exercise of share options	217,935	1,059,674
Employee Share Purchase Plan (ESPP)	44,110	27,131
Restricted share grants, net	178,720	158,438
Common Stock, Shares, Outstanding	372,209,012	370,838,810
Units
Total Units Outstanding	13,731,315	13,904,035
Restricted unit grants, net	245,999	140,055
Conversion of OP Units to Common Shares	(97,363)	(188,406)
Total Units Outstanding	13,879,951	13,855,684
Common Shares And Units Outstanding	386,088,963	384,694,494
Units Ownership Interest in Operating Partnership	3.60%	3.60%