Changes in Intangible Assets Other Than Goodwill (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets [Roll Forward]
Indefinite-Lived Intangible Assets, Beginning Balance	$ 1,596,715	$ 1,596,337
Purchase price allocation adjustments		963
Indefinite-Lived, Acquisitions		0
Indefinite-Lived, Dispositions	(2,776)	(585)
Indefinite-Lived Intangible Assets, Ending Balance	1,593,939	1,596,715
Definite-Lived Intangible Assets, Beginning Balance	243,640	315,490
Definite-Lived, Purchase price allocation adjustments		0
Definite-Lived, Acquisitions		8,205
Definite-Lived, Dispositions	0	(74)
Definite-Lived Intangible Assets, Ending Balance	209,046	243,640
Intangible Assets Total, Beginning Balance	1,840,355	1,911,827
Total Acquisitions		8,205
Total Dispositions	(2,776)	(659)
Amortization	(34,594)	(79,981)
Intangible Assets Total, Ending Balance	$ 1,802,985	$ 1,840,355