Segment Information, Geographic and Product Data (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Geographic Data
Net sales	$ 611.8	$ 581.4	$ 533.5	$ 544.9	$ 643.7	$ 539.9	$ 431.1	$ 414.1	$ 2,271.7	$ 2,028.7	$ 1,675.1
Long-lived assets	1,168.4				924.6				1,168.4	924.6
United States
Geographic Data
Net sales									1,575.3	1,364.2	1,163.7
Long-lived assets	1,142.5				901.7				1,142.5	901.7
Europe
Geographic Data
Net sales									382.1	375.9	277.4
Long-lived assets	6.1				6.9				6.1	6.9
Asia Pacific
Geographic Data
Net sales									153.6	142.1	110.7
Long-lived assets	9.1				4.6				9.1	4.6
Mexico
Geographic Data
Net sales									66.6	68.8	67.1
Long-lived assets	1.6				1.6				1.6	1.6
Canada
Geographic Data
Net sales									59.8	52.1	36.6
Long-lived assets	9.1				9.8				9.1	9.8
Other
Geographic Data
Net sales									$ 34.3	$ 25.6	$ 19.6