Shareholders' Equity - Dividends (Details) - $ / shares				3 Months Ended		9 Months Ended
	Aug. 03, 2020	May 04, 2020	Feb. 24, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity [Abstract]
Dividends declared per common share outstanding (in dollars per share)	$ 0.31	$ 0.31	$ 0.31	$ 0.31	$ 0.29	$ 0.93	$ 0.84