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Acquisitions (Additional Information) (Detail) $ in Thousands, € in Millions |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jun. 10, 2015 EUR (€) | Jun. 10, 2015 USD ($) | May. 29, 2015 EUR (€) | May. 29, 2015 USD ($) | Apr. 28, 2014 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Dec. 31, 2014 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | $ 1,397,660 | $ 1,397,660 | $ 1,321,277
Novotema, SpA |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  | 33,000
Aggregate purchase price |  |  | € 55.6 | $ 60,700 |  |  |  |
Goodwill |  |  |  | 34,900 |  |  |  |
Intangible assets |  |  |  | 20,100 |  |  |  |
Business Acquisition, Goodwill, Expected Non Tax Deductible Amount |  |  |  | $ 34,900 |  |  |  |
Alfa Valvole, s.r.l |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  | $ 33,000
Aggregate purchase price | € 99.8 | $ 112,600 |  |  |  |  |  |
Goodwill |  | 59,600 |  |  |  |  |  |
Intangible assets |  | 44,600 |  |  |  |  |  |
Business Acquisition, Goodwill, Expected Non Tax Deductible Amount |  | $ 59,600 |  |  |  |  |  |
Aegis Flow Technologies |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Aggregate purchase price |  |  |  |  | $ 25,000 |  |  |
Goodwill |  |  |  |  | 7,700 |  |  |
Intangible assets |  |  |  |  | 8,800 |  |  |
Goodwill deductible for tax purposes |  |  |  |  | $ 7,700 |  |  |
Selling, General And Administrative Expenses |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquisition-related transaction costs |  |  |  |  |  | 1,000 | $ 1,200 |
Cost Of Goods Sold |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Fair value of inventory charges associated with acquisitions |  |  |  |  |  | $ 700 |  |

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