Restructuring, Integration, and Other Charges - Accrual (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	$ 91,294	$ 73,602	$ 68,765
Restructuring Reserve	30,580
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	24,221
Restructuring Reserve Scheduled Severance Payments Year One	20,599
Restructuring Reserve Scheduled Severance Payments Year Two	2,576
Restructuring Reserve Scheduled Severance Payments Year Three	1,005
Restructuring Reserve Scheduled Severance Payments Year Four	41
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	6,112
Restructuring Reserve Scheduled Severance Payments Year One	1,730
Restructuring Reserve Scheduled Severance Payments Year Two	669
Restructuring Reserve Scheduled Severance Payments Year Three	698
Restructuring Reserve Scheduled Severance Payments Year Four	451
Restructuring Reserve Scheduled Severance Payments Year Five	327
Restructuring Reserve Scheduled Severance Payments Thereafter	2,237
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	$ 247
Number of Years for the Other Accrual to Be Spent	0
Restructuring Charges 2017 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	$ 46,816
Payments	(27,804)
Foreign currency translation	1,238
Restructuring Reserve	20,250
Restructuring Charges 2017 Plan [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	37,615
Payments	(23,384)
Foreign currency translation	1,045
Restructuring Reserve	15,276
Restructuring Charges 2017 Plan [Member] | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	8,192
Payments	(3,494)
Foreign currency translation	176
Restructuring Reserve	4,874
Restructuring Charges 2017 Plan [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	1,009
Payments	(926)
Foreign currency translation	17
Restructuring Reserve	100
Restructuring Charges 2016 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	15,803
Restructuring, integration, and other charges	5,777	32,894
Payments	(15,115)	(16,836)
Foreign currency translation	690	(255)
Restructuring Reserve	7,155	15,803
Restructuring Charges 2016 Plan [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	11,694
Restructuring, integration, and other charges	6,498	25,763
Payments	(12,229)	(13,730)
Foreign currency translation	459	(339)
Restructuring Reserve	6,422	11,694
Restructuring Charges 2016 Plan [Member] | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	3,793
Restructuring, integration, and other charges	(525)	5,786
Payments	(2,767)	(1,974)
Foreign currency translation	213	(19)
Restructuring Reserve	714	3,793
Restructuring Charges 2016 Plan [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	316
Restructuring, integration, and other charges	(196)	1,345
Payments	(119)	(1,132)
Foreign currency translation	18	103
Restructuring Reserve	19	$ 316
Restructuring Charges From Prior to 2016 [Member]
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	(414)
Restructuring Reserve	3,175
Restructuring Charges From Prior to 2016 [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	750
Restructuring Reserve	2,523
Restructuring Charges From Prior to 2016 [Member] | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	(316)
Restructuring Reserve	524
Restructuring Charges From Prior to 2016 [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring, integration, and other charges	(20)
Restructuring Reserve	$ 128