Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions		12 Months Ended
	Jan. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019
Summary Of Significant Accounting Policies [Line Items]
Out-of-period adjustments			$ 5.1
Trade accounts receivable arising from contracts with customers		$ 590.3
Reduction in federal statutory rate	21.00%	21.00%	35.00%	35.00%
Foreign exchange transaction (losses) gains		$ (10.5)	$ (11.1)	$ 2.4
Maximum remaining expiration period for foreign currency forward contracts		1 year
Minimum
Summary Of Significant Accounting Policies [Line Items]
Payment terms		30 days
Timing between shipment and delivery		1 day
Property, plant and equipment, useful life		2 years
Definite-lived intangible assets useful life		5 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Payment terms		90 days
Timing between shipment and delivery		45 days
Property, plant and equipment, useful life		60 years
Definite-lived intangible assets useful life		25 years
Planned Major Maintenance Activities
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		12 months
Accounting Standards Update 2016-16 | Retained Earnings
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of new accounting principle adopted	$ 11.2
Accounting Standards Update 2018-02 | Retained Earnings
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of new accounting principle adopted	$ 6.9
Subsequent Event | Accounting Standards Update 2016-02
Summary Of Significant Accounting Policies [Line Items]
Additional right-of-use assets					$ 135.0