Stockholders' Deficit - Stock Repurchase Program (Details) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
	Apr. 26, 2016	Mar. 31, 2016	Jun. 30, 2015	Jan. 28, 2015
Stockholders' Deficit
Approved stock repurchase program, authorized amount				$ 450.0
Remaining capacity under the stock repurchase program		$ 196.3
Approved increase	$ 400.0
Repurchase of common stock (in shares)		2,786,246	7,731,428
Repurchase of common stock, amount		$ 105.1	$ 298.3