Reclassifications from Accumulated Other Comprehensive Income (AOCI) (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Amount reclassified from AOCI
Cost of sales	$ (471.8)	$ (480.4)	$ (1,275.2)	$ (1,346.9)
Net sales	566.3	581.4	1,568.4	1,659.9
Interest expense	(2.7)	(5.0)	(10.8)	(14.7)
Income before income taxes	46.2	49.2	142.1	157.8
Tax benefit	(15.6)	(16.3)	(47.4)	(52.2)
Net income	30.6	32.9	94.7	105.6
Cash flow hedging items | Amount Reclassified from AOCI
Amount reclassified from AOCI
Income before income taxes	(5.6)		(20.4)
Tax benefit	2.1		7.6
Net income	(3.5)		(12.8)
Cash flow hedging items | Amount Reclassified from AOCI | Commodity contracts
Amount reclassified from AOCI
Cost of sales	(5.4)		(19.9)
Cash flow hedging items | Amount Reclassified from AOCI | Foreign exchange contracts
Amount reclassified from AOCI
Net sales	(0.3)		(0.8)
Cash flow hedging items | Amount Reclassified from AOCI | Forward interest rate swaps
Amount reclassified from AOCI
Interest expense	0.1		0.3
Amortization of pension and other postretirement benefit plan items | Amount Reclassified from AOCI
Amount reclassified from AOCI
Net actuarial loss	(5.8)		(17.2)
Prior service costs	(0.1)		(0.4)
Income before income taxes	(5.9)		(17.6)
Tax benefit	2.2		6.4
Net income	$ (3.7)		$ (11.2)