Goodwill and Intangible Assets, Finite-lived intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 1,200.4	$ 435.9
Accumulated amortization	(111.0)	(80.8)
Finite-lived intangible assets, net	1,089.4	355.1
Amortization Expense	27.4	23.6	$ 17.6
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2018	60.5
2019	60.3
2020	60.2
2021	60.0
2022	$ 60.0
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Useful lives of finite-lived intangible assets	19 years
Finite-lived intangible assets, gross	$ 1,122.5	356.9
Accumulated amortization	(73.3)	(43.7)
Finite-lived intangible assets, net	$ 1,049.2	313.2
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Useful lives of finite-lived intangible assets	8 years
Finite-lived intangible assets, gross	$ 2.0	2.2
Accumulated amortization	(0.6)	(0.4)
Finite-lived intangible assets, net	$ 1.4	1.8
Brands [Member]
Finite-Lived Intangible Assets [Line Items]
Useful lives of finite-lived intangible assets	12 years
Finite-lived intangible assets, gross	$ 15.7	13.6
Accumulated amortization	(6.2)	(4.7)
Finite-lived intangible assets, net	$ 9.5	8.9
Purchased and licensed technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Useful lives of finite-lived intangible assets	10 years
Finite-lived intangible assets, gross	$ 57.3	60.3
Accumulated amortization	(28.9)	(30.1)
Finite-lived intangible assets, net	$ 28.4	30.2
Other intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Useful lives of finite-lived intangible assets	39 years
Finite-lived intangible assets, gross	$ 2.9	2.9
Accumulated amortization	(2.0)	(1.9)
Finite-lived intangible assets, net	$ 0.9	$ 1.0