Accrued Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accrued Liabilities, Current [Abstract]
Payroll and other employee liabilities	$ 172.8	$ 168.9
Taxes, except income taxes	110.5	109.8
Retirement benefits (see note 3)	10.3	13.4
Workers' compensation and other claims	24.3	24.4
Amounts held by cash logistics operations	31.3	44.0
Income taxes payable	14.5	16.1
Other	143.8	139.9
Accrued liabilities	$ 507.5	$ 516.5