Guarantor Subsidiaries (Schedule Of Guarantor Obligations, Income Statement) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue	$ 1,587,331	$ 1,583,352	$ 4,550,548	$ 4,508,564
Operating expenses:
Direct operating expenses	624,526	654,163	1,846,055	1,868,247
Selling, general and administrative expenses	419,855	402,160	1,241,606	1,195,306
Corporate expenses	70,811	54,247	211,167	163,080
Depreciation and amortization	182,350	197,532	539,555	570,884
Other operating income (expense) - net	42,118	(6,490)	47,159	13,453
Operating income (loss)	331,907	268,760	759,324	724,500
Interest expense - net	388,210	369,233	1,148,093	1,097,849
Equity in earnings (loss) of nonconsolidated affiliates	3,663	5,210	11,914	13,456
Other income (expense) - net	824	7,307	(16,846)	754
Income (loss) before income taxes	(51,816)	(87,956)	(393,701)	(359,139)
Income tax benefit (expense)	13,232	20,665	179,293	122,510
Consolidated net income (loss)	(38,584)	(67,291)	(214,408)	(236,629)
Less amount attributable to noncontrolling interest	11,977	6,765	18,807	22,438
Net income (loss) attributable to the Company	(50,561)	(74,056)	(233,215)	(259,067)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	21,219	(101,951)	17,928	(26,079)
Unrealized holding gain (loss) on marketable securities	16,668	(21,298)	17,399	(7,289)
Unrealized holding gain (loss) on cash flow derivatives	11,808	10,848	36,322	22,791
Reclassification adjustment	(688)	86	(534)	234
Comprehensive income (loss)	(1,554)	(186,371)	(162,100)	(269,410)
Less amount attributable to noncontrolling interest	2,960	(11,699)	877	1,434
Comprehensive income (loss) attributable to the Company	(4,514)	(174,672)	(162,977)	(270,844)
Parent Company [Member]
Revenue	0
Operating expenses:
Direct operating expenses	0
Selling, general and administrative expenses	0
Corporate expenses	2,661	2,599	8,130	8,209
Depreciation and amortization	0
Other operating income (expense) - net	0
Operating income (loss)	(2,661)	(2,599)	(8,130)	(8,209)
Interest expense - net	0	2		13
Equity in earnings (loss) of nonconsolidated affiliates	(29,073)	(62,574)	(163,057)	(199,417)
Other income (expense) - net	0
Income (loss) before income taxes	(31,734)	(65,175)	(171,187)	(207,639)
Income tax benefit (expense)	973	952	2,974	3,008
Consolidated net income (loss)	(30,761)	(64,223)	(168,213)	(204,631)
Less amount attributable to noncontrolling interest	0
Net income (loss) attributable to the Company	(30,761)	(64,223)	(168,213)	(204,631)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	0
Unrealized holding gain (loss) on marketable securities	0
Unrealized holding gain (loss) on cash flow derivatives	0
Reclassification adjustment	0		2
Equity in subsidiary comprehensive income (loss)	45,758	(101,219)	63,570	(12,380)
Comprehensive income (loss)	14,997	(165,442)	(104,641)	(217,011)
Less amount attributable to noncontrolling interest	0
Comprehensive income (loss) attributable to the Company	14,997	(165,442)	(104,641)	(217,011)
Subsidiary Issuer [Member]
Revenue	0
Operating expenses:
Direct operating expenses	0
Selling, general and administrative expenses	0
Corporate expenses	0
Depreciation and amortization	0
Other operating income (expense) - net	0
Operating income (loss)	0
Interest expense - net	319,407	343,039	975,090	1,020,220
Equity in earnings (loss) of nonconsolidated affiliates	171,077	153,264	440,803	440,734
Other income (expense) - net	0	(1)	(15,167)	(5,721)
Income (loss) before income taxes	(148,330)	(189,776)	(549,454)	(585,207)
Income tax benefit (expense)	119,257	127,202	386,397	385,790
Consolidated net income (loss)	(29,073)	(62,574)	(163,057)	(199,417)
Less amount attributable to noncontrolling interest	0
Net income (loss) attributable to the Company	(29,073)	(62,574)	(163,057)	(199,417)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	0
Unrealized holding gain (loss) on marketable securities	0
Unrealized holding gain (loss) on cash flow derivatives	11,808	10,848	36,322	22,791
Reclassification adjustment	0		(2)
Equity in subsidiary comprehensive income (loss)	33,950	(112,067)	27,250	(35,171)
Comprehensive income (loss)	16,685	(163,793)	(99,487)	(211,797)
Less amount attributable to noncontrolling interest	0
Comprehensive income (loss) attributable to the Company	16,685	(163,793)	(99,487)	(211,797)
Guarantor Subsidiaries [Member]
Revenue	853,665	832,949	2,398,690	2,285,970
Operating expenses:
Direct operating expenses	230,834	245,460	650,350	637,418
Selling, general and administrative expenses	280,614	270,016	813,996	784,686
Corporate expenses	42,931	29,313	125,670	87,515
Depreciation and amortization	81,650	82,266	246,165	244,380
Other operating income (expense) - net	(279)	(6,527)	(1,987)	4,314
Operating income (loss)	217,357	199,367	560,522	536,285
Interest expense - net	5,845	(1,024)	17,566	(3,697)
Equity in earnings (loss) of nonconsolidated affiliates	17,166	9,327	(30,015)	30,020
Other income (expense) - net	1,745	(252)	1,931	(614)
Income (loss) before income taxes	230,423	209,466	514,872	569,388
Income tax benefit (expense)	(81,474)	(78,831)	(154,024)	(200,507)
Consolidated net income (loss)	148,949	130,635	360,848	368,881
Less amount attributable to noncontrolling interest	4,436	192	3,821	9,199
Net income (loss) attributable to the Company	144,513	130,443	357,027	359,682
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(257)	625	(724)	677
Unrealized holding gain (loss) on marketable securities	17,755	(16,319)	18,476	(2,830)
Unrealized holding gain (loss) on cash flow derivatives	0
Reclassification adjustment	0
Equity in subsidiary comprehensive income (loss)	18,228	(106,201)	10,926	(35,847)
Comprehensive income (loss)	180,239	8,548	385,705	321,682
Less amount attributable to noncontrolling interest	1,776	(10,620)	1,428	(3,621)
Comprehensive income (loss) attributable to the Company	178,463	19,168	384,277	325,303
Non-Guarantor Subsidiaries [Member]
Revenue	737,693	755,472	2,163,928	2,237,046
Operating expenses:
Direct operating expenses	396,032	412,677	1,201,752	1,235,725
Selling, general and administrative expenses	140,928	133,239	433,633	420,176
Corporate expenses	25,219	22,335	77,367	67,356
Depreciation and amortization	100,700	115,266	293,390	326,504
Other operating income (expense) - net	42,397	37	49,146	9,139
Operating income (loss)	117,211	71,992	206,932	196,424
Interest expense - net	43,158	13,109	99,887	22,603
Equity in earnings (loss) of nonconsolidated affiliates	3,702	5,242	12,332	13,478
Other income (expense) - net	(921)	3,286	5,842	2,815
Income (loss) before income taxes	76,834	67,411	125,219	190,114
Income tax benefit (expense)	(25,524)	(28,658)	(56,054)	(65,781)
Consolidated net income (loss)	51,310	38,753	69,165	124,333
Less amount attributable to noncontrolling interest	7,541	6,573	14,986	13,239
Net income (loss) attributable to the Company	43,769	32,180	54,179	111,094
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	21,476	(102,576)	18,652	(26,756)
Unrealized holding gain (loss) on marketable securities	(1,376)	(5,771)	(7,743)	(5,251)
Unrealized holding gain (loss) on cash flow derivatives	0
Reclassification adjustment	(688)	86	(534)	234
Equity in subsidiary comprehensive income (loss)	0
Comprehensive income (loss)	63,181	(76,081)	64,554	79,321
Less amount attributable to noncontrolling interest	1,184	(1,268)	(551)	4,866
Comprehensive income (loss) attributable to the Company	61,997	(74,813)	65,105	74,455
Eliminations [Member]
Revenue	(4,027)	(5,069)	(12,070)	(14,452)
Operating expenses:
Direct operating expenses	(2,340)	(3,974)	(6,047)	(4,896)
Selling, general and administrative expenses	(1,687)	(1,095)	(6,023)	(9,556)
Corporate expenses	0
Depreciation and amortization	0
Other operating income (expense) - net	0
Operating income (loss)	0
Interest expense - net	19,800	14,107	55,550	58,710
Equity in earnings (loss) of nonconsolidated affiliates	(159,209)	(100,049)	(248,149)	(271,359)
Other income (expense) - net	0	4,274	(9,452)	4,274
Income (loss) before income taxes	(179,009)	(109,882)	(313,151)	(325,795)
Income tax benefit (expense)	0
Consolidated net income (loss)	(179,009)	(109,882)	(313,151)	(325,795)
Less amount attributable to noncontrolling interest	0
Net income (loss) attributable to the Company	(179,009)	(109,882)	(313,151)	(325,795)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	0
Unrealized holding gain (loss) on marketable securities	289	792	6,666	792
Unrealized holding gain (loss) on cash flow derivatives	0
Reclassification adjustment	0
Equity in subsidiary comprehensive income (loss)	(97,936)	319,487	(101,746)	83,398
Comprehensive income (loss)	(276,656)	210,397	(408,231)	(241,605)
Less amount attributable to noncontrolling interest	0	189		189
Comprehensive income (loss) attributable to the Company	$ (276,656)	$ 210,208	$ (408,231)	$ (241,794)