Other Expense Items (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Income and Expenses [Abstract]
Argentina currency devaluation	$ 1.1		$ 1.1
Venezuela deconsolidation	$ 0.0	$ 0.0	$ 0.0	$ (11.1)

Amount before tax of foreign currency transaction realized and unrealized loss recognized in the income statement.

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Name:	us-gaap_ForeignCurrencyTransactionLossBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration