Accounts Receivable Securitization Programs (Details) € in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) bank	Jun. 30, 2016 USD ($)	Jun. 30, 2017 EUR (€)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Interest expense (less than)	$ 50,900,000	$ 50,900,000	$ 99,700,000	$ 101,800,000
U.S. Accounts Receivable Securitization Program
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Interest expense (less than)	$ 1,000,000	$ 1,000,000	$ 1,000,000	$ 1,000,000
U.S. Accounts Receivable Securitization Program | U.S.program
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Number of banks involved in sale of fractional ownership interest of accounts receivable | bank			2
Level of eligible assets available under accounts receivable securitization program (less than)			$ 90,000,000
Amount available for accounts receivable securitization program						$ 82,900,000
Amount utilized under accounts receivable securitization program						82,000,000	$ 0
U.S. Accounts Receivable Securitization Program | Maximum | U.S.program
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Maximum purchase limit for receivable interests under accounts receivable securitization program						90,000,000
European Accounts Receivable Securitization Program | Europe
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Amount available for accounts receivable securitization program					€ 99.1	113,400,000
Amount utilized under accounts receivable securitization program					98.8	113,100,000	$ 0
European Accounts Receivable Securitization Program | Maximum | Europe
Qualitative And Quantitative Information Transferors Continuing Involvement [Line Items]
Maximum purchase limit for receivable interests under accounts receivable securitization program					€ 110.0	$ 125,900,000