Accrued Liabilities (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Accrued Liabilities
Accrued pension liabilities	$ 70.0	$ 30.7
Accrued compensation	50.1	41.2
Derivative financial instruments	26.5	7.7
Accrued postretirement benefits	17.2	15.2
Other	53.3	30.1
Total accrued liabilities	$ 217.1	$ 124.9