Guarantor Subsidiaries (Schedule Of Guarantor Subsidiaries, Income Statement) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue	$ 1,344,564	$ 1,342,548
Operating Expenses [Abstract]
Direct operating expenses	578,519	597,688
Selling, general and administrative expenses	416,188	414,636
Corporate expenses	77,288	72,705
Depreciation and amortization	170,453	174,871
Impairment charge	0	0
Other operating income (expense), net	(8,974)	165
Operating income (loss)	93,142	82,813
Interest (income) expense, net	441,771	431,114
Gain (loss) on marketable securities	579	0
Equity in earnings (loss) of nonconsolidated affiliates	331	(13,326)
Loss on debt extinguishment	(2,201)	(3,916)
Other income (expense), net	19,891	1,541
Income (loss) before income taxes	(330,029)	(364,002)
Income tax benefit (expense)	(56,605)	(68,388)
Consolidated net income (loss)	(386,634)	(432,390)
Less amount attributable to noncontrolling interest	(1,668)	(8,200)
Net income (loss) attributable to the Company	(384,966)	(424,190)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(82,159)	(2,217)
Unrealized gain (loss) on securities and derivatives:
Unrealized holding gain (loss) on marketable securities	822	1,084
Unrealized holding gain on cash flow derivatives	0	0
Other adjustments to comprehensive income (loss)	(1,154)	3,309
Reclassification adjustment for realized gain (loss) on securities included in net loss	0	0
Comprehensive income (loss)	(467,457)	(422,014)
Less amount attributable to noncontrolling interest	(6,353)	(2,963)
Comprehensive income (loss) attributable to the Company	$ (461,104)	$ (419,051)