Other Long-Term Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Long-Term Liabilities [Abstract]
Long-term deferred compensation arrangements	$ 23.4	$ 24.7
Long-term portion of derivative liabilities	25.7	16.1
U.S. workers' compensation	8.4	10.3
Postemployment benefit liabilities	7.2	8.0
Environmental liabilities	10.7	7.3
Other	11.2	12.4
Total other long-term liabilities	$ 86.6	$ 78.8