Stock Repurchase and Dividends (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions						12 Months Ended	28 Months Ended
	Nov. 09, 2015	Jul. 27, 2015	Apr. 27, 2015	Jan. 26, 2015	Nov. 10, 2014	Sep. 27, 2015	Sep. 27, 2015	Jun. 30, 2013
Maximum repurchase amount under stock repurchase program					$ 200.0			$ 100.0
Shares repurchased through open market purchases						4.0	3.9
Average price of shares repurchased (in dollars per share)						$ 25.36	$ 25.59
Cost of shares repurchased						$ 100.5	$ 100.0
Payment of ordinary dividends						$ 18.2
Quarterly cash dividend declared (in dollars per share)		$ 0.08	$ 0.08	$ 0.07	$ 0.07
Period of stock repurchase program					2 years
Subsequent Event
Quarterly cash dividend declared (in dollars per share)	$ 0.08