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Acquisitions - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Business Acquisition [Line Items]                      
Revenue $ 450,539,000 $ 413,796,000 $ 420,059,000 $ 411,877,000 [1] $ 419,056,000 [2] $ 368,054,000 [2] $ 383,332,000 [2] $ 380,567,000 [1],[2] $ 1,696,271,000 $ 1,551,009,000 $ 1,492,528,000
Operating profit 54,064,000 66,042,000 63,751,000 49,404,000 [1] 58,440,000 [2] 49,841,000 [2] 64,722,000 [2] (270,378,000) [1],[2] 233,261,000 (97,375,000) 229,570,000
Goodwill 1,354,203,000       1,238,452,000       1,354,203,000 1,238,452,000  
Contingent consideration payments                 16,958,000 17,596,000 5,947,000
2013 Acquisition
                      
Business Acquisition [Line Items]                      
Fair value of the consideration at the date of acquisition 307,000,000               307,000,000    
Transaction expenses                 3,800,000    
Revenue                 9,700,000    
Operating profit                 2,800,000    
Liability related to post-closing obligations                 2,800,000    
Liabilities settlement obligation 800,000               800,000    
Goodwill 123,300,000               123,300,000    
2013 Acquisition | Intellectual property
                      
Business Acquisition [Line Items]                      
Intangible assets 159,500,000               159,500,000    
2013 Acquisition | Customer Lists
                      
Business Acquisition [Line Items]                      
Intangible assets 49,600,000               49,600,000    
2013 Acquisition | Trade Names
                      
Business Acquisition [Line Items]                      
Intangible assets 26,500,000               26,500,000    
2013 Acquisition | Minimum | Intellectual property
                      
Business Acquisition [Line Items]                      
Useful life of intangible assets acquired, years                 10 years    
2013 Acquisition | Minimum | Customer Lists
                      
Business Acquisition [Line Items]                      
Useful life of intangible assets acquired, years                 16 years    
2013 Acquisition | Minimum | Trade Names
                      
Business Acquisition [Line Items]                      
Useful life of intangible assets acquired, years                 1 year    
2013 Acquisition | Maximum | Intellectual property
                      
Business Acquisition [Line Items]                      
Useful life of intangible assets acquired, years                 18 years    
2013 Acquisition | Maximum | Customer Lists
                      
Business Acquisition [Line Items]                      
Useful life of intangible assets acquired, years                 27 years    
2013 Acquisition | Maximum | Trade Names
                      
Business Acquisition [Line Items]                      
Useful life of intangible assets acquired, years                 30 years    
2012 Acquisitions
                      
Business Acquisition [Line Items]                      
Fair value of the consideration at the date of acquisition 422,200,000               422,200,000    
Initial payment of Fair value                 367,900,000    
Estimated fair value of the consideration to be paid to former security holders 55,800,000               55,800,000    
Working capital adjustment related to acquisition                 1,500,000    
Intangible assets 227,500,000               227,500,000    
Goodwill 153,000,000               153,000,000    
Contingent consideration payments                 27,000,000    
Contingent consideration arrangement, low 0               0    
Contingent consideration arrangement, high 62,000,000               62,000,000    
Net asset value $ 42,000,000               $ 42,000,000    
[1] Amounts for the first quarter 2012 include a pretax goodwill impairment charge of $332.1 million, or $315.1 million net of tax. See Note 7 to the consolidated financial statements.
[2] Amounts reflect the retrospective impact of reporting the orthopedic business as discontinued operations. See Note 18 to the consolidated financial statements.