Components of Intangible Assets with Definite Lives (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets Excluding Goodwill [Line Items]
Cost	$ 909,111	$ 797,547
Accumulated Amortization	(745,557)	(711,425)
Net	163,554	86,122
Supplier Relationships
Intangible Assets Excluding Goodwill [Line Items]
Cost	282,884	267,557
Accumulated Amortization	(244,083)	(234,363)
Net	38,801	33,194
Technology
Intangible Assets Excluding Goodwill [Line Items]
Cost	209,901	203,860
Accumulated Amortization	(185,709)	(178,712)
Net	24,192	25,148
Customer Lists
Intangible Assets Excluding Goodwill [Line Items]
Cost	109,971	30,364
Accumulated Amortization	(26,275)	(18,899)
Net	83,696	11,465
Affiliate Agreements
Intangible Assets Excluding Goodwill [Line Items]
Cost	38,627	34,782
Accumulated Amortization	(33,911)	(29,761)
Net	4,716	5,021
Other
Intangible Assets Excluding Goodwill [Line Items]
Cost	267,728	260,984
Accumulated Amortization	(255,579)	(249,690)
Net	$ 12,149	$ 11,294