Debt (Details) - USD ($)		12 Months Ended
	Aug. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Document Period End Date		Dec. 31, 2018
Notes payable – current
Uncommitted Lines Of Credit		$ 20,900,000	$ 16,200,000
Other		2,700,000	500,000
Notes payable		49,500,000	66,700,000
Long-term debt
Revolving credit facility		125,000,000	75,000,000
Other		2,400,000	1,400,000
Long-term debt excluding debt issuance costs		2,264,900,000	1,837,500,000
Debt Issuance Costs, Noncurrent, Net		(74,900,000)	(50,400,000)
Revolving debt borrowings (repayments), net		50,000,000	75,000,000	$ (178,000,000)
Other debt borrowings		725,900,000	374,100,000	1,837,700,000
repayments of other debt		(337,700,000)	(458,800,000)	$ (662,500,000)
Long-term debt		2,190,000,000	1,787,100,000
Term Loan A Facility [Member]
Notes payable – current
Unsecured Debt, Current		0	23,000,000
Long-term debt
Long-term debt		126,300,000	178,300,000
repayments of other debt	$ (130,000,000)	(75,000,000)	(17,300,000)
Delayed Draw Term Loan A Facility [Member]
Notes payable – current
Unsecured Debt, Current		0	17,200,000
Long-term debt
Long-term debt		160,500,000	226,600,000
Other debt borrowings		0	250,000,000
repayments of other debt		(83,200,000)	(6,300,000)
Term Loan A-1 Facility [Member]
Notes payable – current
Unsecured Debt, Current		16,300,000	0
Long-term debt
Long-term debt		625,600,000	0
Other debt borrowings	$ 650,000,000.0	650,000,000	0
repayments of other debt		(8,100,000)	0
Uncommitted Line of Credit [Member]
Long-term debt
Other debt borrowings		75,900,000	50,800,000
repayments of other debt		(62,800,000)	(41,400,000)
Senior Notes Due 2024 [Member]
Long-term debt
Senior Notes, Noncurrent		400,000,000	400,000,000
Term Loan B EUR [Member]
Notes payable – current
Unsecured Debt, Current		4,800,000	5,000,000
Long-term debt
Long-term debt		411,900,000	489,500,000
Other debt borrowings		0	73,300,000
repayments of other debt		(55,600,000)	(4,600,000)
European Investment Bank [Member]
Long-term debt
repayments of other debt		0	(63,100,000)
Term Loan B USD [Member]
Notes payable – current
Unsecured Debt, Current		4,800,000	4,800,000
Long-term debt
Long-term debt		413,200,000	466,700,000
repayments of other debt		$ (53,000,000)	$ (326,100,000)
2016 Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		8.50%