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Fair Value Measurements - Additional Information (Detail) (USD $) |  |  |  |  |  | 1 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2013 2.58% Senior Euro Notes, due June 2015 | Dec. 06, 2010 Senior Notes | Dec. 09, 2011 4.2% Senior Notes, due December 2021 | Apr. 30, 2013 Matcon Group Limited | Sep. 30, 2013 Matcon Group Limited | Jul. 20, 2012 Matcon Group Limited
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |  |  |  |
Payment under contingent consideration arrangement |  |  |  |  |  | $ 3,800,000 |  |
Contingent consideration fair value | 4,890,000 | 9,043,000 |  |  |  |  | 4,900,000 | 8,400,000
Contingent consideration for acquisition | 4,890,000 | 3,528,000 |  |  |  |  | 4,900,000 |
Stated interest rate |  |  | 2.58% | 4.50% | 4.20% |  |  |
Fair value of our revolving facility and senior debt | 792,200,000 |  |  |  |  |  |  |
Carrying value of our revolving facility and senior debt | $ 777,600,000 |  |  |  |  |  |  |

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