Other Noncurrent Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Other Noncurrent Assets Disclosure [Line Items]
Nonamortizable identifiable intangibles	$ 504,241	$ 617,223	$ 617,223
Deferred income taxes	439,937	374,667	506,598
Identifiable intangibles (net of amortization of $68.8 million, $64.9 million, and $58.7 million, respectively)	182,005	88,786	94,450
Other	249,796	215,293	214,865
Total other noncurrent assets	$ 1,375,979	$ 1,295,969	$ 1,433,136