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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 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Segment Reporting Information [Line Items]                      
Total Adjusted Segment EBITDA                 $ 321,392 [1] $ 337,658 [1] $ 327,364 [1]
Segment depreciation expense                 (25,058) (23,620) (26,102)
Amortization of intangible assets                 (22,407) (22,371) (23,910)
Special charges                 (29,557) (15,212) (51,131)
Goodwill impairment charge (110,387)               (110,387)    
Unallocated corporate expenses, excluding special charges                 (74,947) (71,008) (67,829)
Interest income and other 1,156 1,584 (363) 3,282 895 486 2,923 2,000 5,659 6,304 4,423
Interest expense (13,124) (13,208) (15,195) (15,204) (14,495) (14,319) (14,500) (15,310) (56,731) (58,624) (50,263)
Loss on early extinguishment of debt (4,850)               (4,850)   (5,161)
Income before income tax provision $ (72,149) $ 34,964 $ 11,274 $ 29,025 $ 54,604 $ 45,589 $ 22,065 $ 30,869 $ 3,114 $ 153,127 $ 107,391
[1] Total Adjusted Segment EBITDA is the total of Adjusted Segment EBITDA for all segments.