Dividends (Details) - $ / shares					3 Months Ended		6 Months Ended
	Mar. 13, 2020	Feb. 12, 2020	Jan. 15, 2020	Dec. 10, 2019	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Cash dividends declared		$ 0.15		$ 0.15
Common Stock, Dividends, Per Share, Cash Paid	$ 0.15		$ 0.15		$ 0.15	$ 0.15	$ 0.30	$ 0.30