Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	1 Months Ended			3 Months Ended
	Jul. 31, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Common stock, dividends declared per share (in usd per share)	$ 1.60	$ 1.60	$ 1.60	$ 1.60	$ 1.60	$ 1.45	$ 1.45