Goodwill and Other Intangibles, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization expense of intangible assets	$ 18.0	$ 13.9
Estimated amortization expense, 2018	71.0
Maximum
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Estimated amortization expense, 2019	70.0
Estimated amortization expense, 2020	70.0
Estimated amortization expense, 2021	70.0
Estimated amortization expense, 2022	70.0
Estimated amortization expense, 2023	70.0
Minimum
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Estimated amortization expense, 2019	60.0
Estimated amortization expense, 2020	60.0
Estimated amortization expense, 2021	60.0
Estimated amortization expense, 2022	60.0
Estimated amortization expense, 2023	$ 60.0