Goodwill and Other Intangible Assets - Narrative (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Goodwill [Line Items]
Acquisitions		$ 46,100,000
Goodwill	$ 1,047,600,000	993,700,000	$ 960,500,000
Tax deductible	19,000,000.0
Goodwill, other	45,500,000	$ (12,900,000)
Intangible assets acquired	0
Amortization period		18 years 1 month 6 days
Goodwill and Other Intangible Assets (Textual) [Abstract]
Amortization expense for intangible assets	56,200,000	$ 57,300,000	46,800,000
Future amortization expense 2021	54,200,000
Future amortization expense year 2022	49,400,000
Future amortization expense year 2023	46,200,000
Future amortization expense year 2024	44,300,000
Future amortization expense year 2025	$ 43,200,000
Minimum
Goodwill [Line Items]
Useful life for intangible assets	1 year	2 years
Maximum
Goodwill [Line Items]
Useful life for intangible assets	20 years	20 years
2019 Acquisitions
Goodwill [Line Items]
Acquisitions	$ 8,400,000
Goodwill	$ 52,600,000	$ 52,600,000
Goodwill, other		1,900,000
Intangible assets acquired		84,400,000
Mobile
Goodwill [Line Items]
Number of reporting units | segment	4
Acquisitions	$ 5,600,000	18,200,000
Goodwill	384,600,000	361,300,000	349,700,000
Goodwill, other	$ 17,700,000	(6,600,000)
Process
Goodwill [Line Items]
Number of reporting units | segment	2
Acquisitions	$ 2,800,000	27,900,000
Goodwill	663,000,000.0	632,400,000	$ 610,800,000
Goodwill, other	$ 27,800,000	$ (6,300,000)