Schedule of Notional Amounts (Details) lb in Millions, gal in Millions, $ in Millions	Dec. 31, 2017 USD ($) gal lb	Dec. 31, 2016 USD ($) gal lb
Designated as Hedging Instrument | Foreign Exchange Contract
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivatives, Notional Amount	$ 91.6	$ 94.1
Designated as Hedging Instrument | Interest Rate Swaps
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivatives, Notional Amount	$ 300.0	$ 300.0
Designated as Hedging Instrument | Diesel fuel contracts
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivatives, Notional Amount, Volume | gal	3.0	2.0
Designated as Hedging Instrument | Commodities Contracts
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivatives, Notional Amount, Volume | lb	28.3	0.0
Not Designated as Hedging Instrument | Foreign Exchange Contract
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivatives, Notional Amount	$ 0.0	$ 1.8
Not Designated as Hedging Instrument | Equity derivatives
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivatives, Notional Amount	$ 22.2	$ 34.4