Annual report pursuant to Section 13 and 15(d)

Breakdown of Selected Financial Information by Reportable Segment (Detail)

v2.4.0.6
Breakdown of Selected Financial Information by Reportable Segment (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]                      
Revenues $ 611,534 $ 633,573 $ 649,606 $ 578,818 $ 535,871 $ 640,013 $ 620,593 $ 483,136 $ 2,473,531 $ 2,279,613 $ 2,141,144
Adjusted EBITDA                 589,235 519,473 485,920
Capital expenditures                 220,727 184,819 156,102
U.S.
                     
Segment Reporting Information [Line Items]                      
Revenues                 1,706,511 1,593,667 1,584,281
Adjusted EBITDA                 409,860 371,212 363,345
Capital expenditures                 107,323 79,510  
International
                     
Segment Reporting Information [Line Items]                      
Revenues                 777,663 696,119 564,240
Adjusted EBITDA                 179,375 148,261 122,575
Capital expenditures                 113,404 105,309  
Eliminations
                     
Segment Reporting Information [Line Items]                      
Revenues                 $ (10,643) $ (10,173) $ (7,377)