Accrued Liabilities (Details) - USD ($) $ in Millions |
Dec. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Accrued Liabilities, Current [Abstract] | ||
| Payroll and other employee liabilities | $ 157.6 | $ 123.2 |
| Taxes, except income taxes | 95.7 | 80.8 |
| Income taxes payable | 26.0 | 23.2 |
| Acquisition-related obligations | 18.0 | 0.0 |
| Workers’ compensation and other claims | 16.8 | 19.2 |
| Cash held by Cash Management Services operations(a) | 16.1 | 9.8 |
| Cash supply chain deposit liability | 10.9 | 0.0 |
| Retirement benefits (see Note 3) | 10.2 | 9.1 |
| Other | 137.2 | 120.4 |
| Accrued liabilities | $ 488.5 | $ 385.7 |