Summary of Significant Accounting Policies and Procedures and Newly Adopted Accounting Standards - Net Income Per Common Share (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share Reconciliation [Abstract]
Weighted average shares used for the basic net income per share computation (in shares)	315,837,012	289,427,430	273,465,680
Incremental shares from share-based compensation (in shares)	322,265	179,532	154,050
Weighted average partnership common units convertible to common shares that were dilutive (in shares)	0	317,022	317,022
Weighted average shares used for diluted net income per share computation (in shares)	316,159,277	289,923,984	273,936,752
Unvested shares from share-based compensation
Net income per common share
Anti-dilutive shares excluded from computation (in shares)	8,113	13,148	32,205
Partnership common units convertible to common shares
Net income per common share
Anti-dilutive shares excluded from computation (in shares)	442,073	297,576	88,182