Acquisitions and Divestitures (Additional Information - Acquisitions) (Detail) $ in Thousands, € in Millions								3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 16, 2016 USD ($)	Dec. 01, 2015 USD ($)	Jul. 01, 2015 USD ($)	Jun. 10, 2015 EUR (€)	Jun. 10, 2015 USD ($)	May 29, 2015 EUR (€)	May 29, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Goodwill								$ 1,516,303		$ 1,516,303		$ 1,396,529
Akron Brass
Business Acquisition [Line Items]
Revenues												$ 120,000
Aggregate purchase price, cash paid	$ 221,600
Goodwill	123,855							123,900		123,900
Intangible assets	90,400							90,400		90,400
Indefinite-lived intangible assets acquired	$ 28,800
Novotema, SpA
Business Acquisition [Line Items]
Aggregate purchase price, cash paid						€ 56.0	$ 61,100
Goodwill								34,300		34,300
Intangible assets								20,000		20,000
Goodwill not deductible for tax purposes								34,300		34,300
Alfa Valvole, s.r.l
Business Acquisition [Line Items]
Aggregate purchase price, cash paid				€ 99.8	$ 112,600
Goodwill								69,600		69,600
Intangible assets								32,100		32,100
Goodwill not deductible for tax purposes								69,600		69,600
CIDRA Precision Services, LLC
Business Acquisition [Line Items]
Aggregate purchase price, cash paid			$ 19,500
Eran-out			4,700
Goodwill								9,700		9,700
Intangible assets								12,300		12,300
Consideration transferred			24,200
Goodwill deductible for tax purposes								9,700		9,700
CIDRA Precision Services, LLC | Minimum
Business Acquisition [Line Items]
Contingent consideration for acquisition			0
CIDRA Precision Services, LLC | Maximum
Business Acquisition [Line Items]
Contingent consideration for acquisition			$ 5,500
Complementary Product Line
Business Acquisition [Line Items]
Goodwill		$ 700
Consideration transferred		$ 1,900
Selling, general and administrative expenses
Business Acquisition [Line Items]
Acquisition-related transaction costs								1,400	$ 1,000	2,400	$ 1,200
Change in amount of contingent consideration, liability								1,000		4,700
Cost of goods sold
Business Acquisition [Line Items]
Fair value of inventory charges associated with acquisitions								$ 3,600		$ 5,800