Earnings Per Common Share - Reconciliation of Weighted Average Number of Common Shares Outstanding (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Weighted average common shares outstanding – basic (in shares)	204,289	192,325	202,380	175,010
Dilutive effect of share-based awards (in shares)	1,642	1,533	1,520	1,696
Equity forward contract (in shares)	2,569	3,505	2,151	2,264
Weighted average common shares outstanding – diluted (in shares)	208,500	197,363	206,051	178,970