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Fair Value Measurements (Additional Information) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2016 | Mar. 31, 2016 | Jun. 30, 2016 | Jun. 30, 2016 | Sep. 30, 2016 | Dec. 31, 2015
Fair Value |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Long-term debt, fair value |  |  |  |  | $ 1,143.2 |
Carrying Value |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Long-term debt, fair value |  |  |  |  | $ 1,103.9 |
3.2% Senior Notes, due June 2023 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Stated interest rate |  |  |  |  | 3.20% |
3.37% Senior Notes, due June 2025 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Stated interest rate |  |  |  |  | 3.37% |
4.5% Senior Notes, due December 2020 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Stated interest rate |  |  |  |  | 4.50% |
4.2% Senior Notes, due December 2021 |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Stated interest rate |  |  |  |  | 4.20% |
CIDRA Precision Services, LLC | Selling, general and administrative expenses |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Change in amount of contingent consideration, liability | $ 1.0 | $ 3.7 | $ 4.7 | $ 4.7 |  |
Accrued Expenses |  |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |
Contingent consideration |  |  |  |  |  | $ 4.7

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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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