Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Balances and locations of derivatives
Other current assets	$ 6.9	$ 6.5
Derivative Liabilities	7.6	18.6
Foreign exchange contracts [Member]
Balances and locations of derivatives
Other current assets	6.9	6.5
Other current liabilities	5.6	15.7
Commodity contracts [Member]
Balances and locations of derivatives
Other current liabilities	1.9
Long-term retirement benefits and other liabilities	$ 0.1	$ 2.9