Accounting Standard Changes - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended
	Jan. 01, 2018	Mar. 31, 2017
Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Affect on retained earnings due to adoption of new accounting guidance, net of tax	$ 0.3
Affect on retained earnings due to adoption of new accounting guidance, tax	$ 0.1
Accounting Standards Update 2017-07 | Cost Of Products Sold And Selling, General and Administrative Expenses
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit cost		$ (1.0)
Accounting Standards Update 2017-07 | Other Expense (Income)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit cost		$ 1.0