Borrowing Arrangements - Schedule of Long-Term Borrowing (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total obligations under Restated Credit Facility and other borrowings	$ 107.8	$ 153.8
Less: Current portion of obligations under Restated Credit Facility and other borrowings	20.9	20.6
Total long-term obligations under Restated Credit Facility and other borrowings	86.9	133.2
Restated Credit Facility, net of original discount on borrowings and deferred financing costs
Debt Instrument [Line Items]
Total obligations under Restated Credit Facility and other borrowings	105.2	151.0
Other borrowings
Debt Instrument [Line Items]
Total obligations under Restated Credit Facility and other borrowings	$ 2.6	$ 2.8