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Reconciliation of Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Segment Reporting Information [Line Items]    
Total Adjusted Segment EBITDA $ 75,360 [1] $ 75,009 [1]
Segment depreciation expense (6,876) (6,273)
Amortization of other intangible assets (5,564) (5,517)
Special charges (427)  
Unallocated corporate expenses, excluding special charges (17,164) (22,272)
Interest income and other 937 3,282
Interest expense (12,715) (15,204)
Income before income tax provision $ 33,551 $ 29,025
[1] Total Adjusted Segment EBITDA is the total of Adjusted Segment EBITDA for all segments.