Summary of Significant Accounting Policies - Additional Information (Detail) $ / shares in Units, $ in Thousands		3 Months Ended																12 Months Ended
	May 03, 2017	Dec. 31, 2017 USD ($) plan $ / shares shares		Sep. 30, 2017 USD ($) $ / shares	[1]	Jun. 30, 2017 USD ($) $ / shares	[1]	Mar. 31, 2017 USD ($) $ / shares	[1]	Dec. 31, 2016 USD ($) $ / shares		Sep. 30, 2016 USD ($) $ / shares	[2]	Jun. 30, 2016 USD ($) $ / shares	[2]	Mar. 31, 2016 USD ($) $ / shares	[2]	Dec. 31, 2017 USD ($) plan $ / shares shares		Dec. 31, 2016 USD ($) $ / shares		Dec. 31, 2015 USD ($) $ / shares
Summary Of Significant Accounting Policies [Line Items]
Stock split ratio (in shares)	2																	2,000		2		2
Number of stock-based compensation plans | plan		1																1
Operating Income (Loss)																		$ 356,990		$ 299,730		$ 319,812
Net income		$ 146,119	[1]	$ 72,382		$ 27,926		$ 23,232		$ 23,694	[2]	$ 69,770		$ 33,315		$ 26,572		$ 269,659		$ 153,351		$ 172,413
Earnings Per Share, Diluted | $ / shares		$ 1.31	[1],[3]	$ 0.65	[3]	$ 0.25	[3]	$ 0.21	[3]	$ 0.20	[2],[3]	$ 0.57	[3]	$ 0.27	[3]	$ 0.22	[3]	$ 2.42	[4]	$ 1.27	[4]	$ 1.41	[4]
Other assets, net		$ 275,113								$ 244,764								$ 275,113		$ 244,764
Accrued liabilities		(123,602)								(93,625)								(123,602)		(93,625)
Other liabilities		$ (220,211)								$ (175,274)								(220,211)		$ (175,274)
Reclassification from other comprehensive loss to retained earnings resulting from Tax Cuts and Jobs Act																		$ 22,100
Building
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life (in years)																		35 years
Machinery and Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life (in years)																		3 years
Machinery and Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life (in years)																		20 years
Customer Relationships [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life																		20 years
Other Intangible Assets [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life																		8 years
Restricted stock units
Summary Of Significant Accounting Policies [Line Items]
Number of common shares issuable per restricted stock unit (in shares) | shares		1																1

[1] The first, second, third and fourth quarters of 2017 include rationalization charges of $0.9 million, $3.0 million, $0.6 million and $1.3 million, respectively. The first, second, third and fourth quarters of 2017 includes costs attributed to announced acquisitions of $13.2 million, $9.8 million, $0.8 million and $0.9 million, respectively. The first and second quarters of 2017 include a loss on early extinguishment of debt of $2.7 million and $4.4 million, respectively. The fourth quarter of 2017 includes the benefit from effective tax rate adjustments totaling $110.9 million primarily related to the remeasurement of net deferred tax liabilities to reflect the lower future cash tax obligations as a result of the reduction in the federal corporate tax rate under the 2017 Tax Act.

[2] The first, second, third and fourth quarters of 2016 include rationalization charges of $1.1 million, $5.0 million, $7.8 million and $5.1 million, respectively. The fourth quarter of 2016 includes costs attributed to announced acquisitions of $1.4 million.

[3] Net income per share data is computed independently for each of the periods presented. Accordingly, the sum of the quarterly earnings per share amounts may not equal the total for the year.

[4] Per share amounts for 2016 and 2015 have been retroactively adjusted for the two-for-one stock split discussed in Note 1.