Shareholders' Equity (Details) - $ / shares	1 Months Ended			3 Months Ended					6 Months Ended
	Apr. 30, 2020	Jul. 31, 2019	Apr. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2020	Jun. 30, 2019
Equity [Abstract]
Dividend declared (in dollars per share)				$ 0.78	$ 0.78	$ 0.70	$ 0.70	$ 0.70	$ 0.78	$ 1.40
Common stock, dividends, per share, cash paid (in dollars per share)	$ 0.78	$ 0.70	$ 0.70	$ 0.78			$ 0.70