Cash Dividends (Details) - $ / shares			3 Months Ended		9 Months Ended
	Jun. 01, 2016	Mar. 02, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Cash Dividends
Cash dividends declared, per share (in dollars per share)	$ 0.70	$ 0.6875	$ 0.7000	$ 0.6875	$ 2.075	$ 2.0625
Cash dividend paid, per share (in dollars per share)	$ 0.6875