Other Long-Term Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Liabilities Disclosure [Abstract]
Single employer pension and postretirement obligations	$ 288.3	$ 300.9
Multiemployer pension plans—withdrawal liability	74.3	83.5
Tax-related liabilities	22.0	30.7
Employee-related liabilities	53.5	45.0
Other	57.6	61.4
Total	$ 495.7	$ 521.5