Guarantor Subsidiaries (Schedule Of Guarantor Obligations, Income Statement) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenue	$ 1,602,494	$ 1,604,386	$ 2,963,217	$ 2,925,212
Operating expenses:
Direct operating expenses	607,095	630,015	1,221,529	1,214,084
Selling, general and administrative expenses	398,123	420,436	821,751	793,146
Corporate expenses	71,158	56,486	140,356	108,833
Depreciation and amortization	181,839	189,641	357,205	373,352
Other operating income (expense) - net	1,917	3,229	5,041	19,943
Operating income (loss)	346,196	311,037	427,417	455,740
Interest expense - net	385,867	358,950	759,883	728,616
Equity in earnings (loss) of nonconsolidated affiliates	4,696	5,271	8,251	8,246
Other income (expense) - net	(1,397)	(4,517)	(17,670)	(6,553)
Income (loss) before income taxes	(36,372)	(47,159)	(341,885)	(271,183)
Income tax benefit (expense)	8,663	9,184	166,061	101,845
Consolidated net income (loss)	(27,709)	(37,975)	(175,824)	(169,338)
Less amount attributable to noncontrolling interest	11,316	15,204	6,830	15,673
Net income (loss) attributable to the Company	(39,025)	(53,179)	(182,654)	(185,011)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(40,380)	36,565	(3,291)	75,872
Unrealized holding gain (loss) on marketable securities	(11,317)	11,057	731	14,009
Unrealized holding gain (loss) on cash flow derivatives	15,935	(1,399)	24,514	11,943
Reclassification adjustment	91	59	154	148
Comprehensive income (loss)	(74,696)	(6,897)	(160,546)	(83,039)
Less amount attributable to noncontrolling interest	(5,738)	6,435	(2,083)	13,133
Comprehensive income (loss) attributable to the Company	(68,958)	(13,332)	(158,463)	(96,172)
Parent Company [Member]
Operating expenses:
Corporate expenses	2,769	2,951	5,469	5,610
Operating income (loss)	(2,769)	(2,951)	(5,469)	(5,610)
Interest expense - net		4		11
Equity in earnings (loss) of nonconsolidated affiliates	(20,107)	(32,749)	(133,984)	(136,843)
Income (loss) before income taxes	(22,876)	(35,704)	(139,453)	(142,464)
Income tax benefit (expense)	1,013	1,081	2,001	2,056
Consolidated net income (loss)	(21,863)	(34,623)	(137,452)	(140,408)
Net income (loss) attributable to the Company	(21,863)	(34,623)	(137,452)	(140,408)
Other comprehensive income (loss), net of tax:
Reclassification adjustment	2		2
Equity in subsidiary comprehensive income (loss)	(31,865)	39,847	17,812	88,839
Comprehensive income (loss)	(53,726)	5,224	(119,638)	(51,569)
Comprehensive income (loss) attributable to the Company	(53,726)	5,224	(119,638)	(51,569)
Subsidiary Issuer [Member]
Operating expenses:
Interest expense - net	315,544	332,242	655,683	677,181
Equity in earnings (loss) of nonconsolidated affiliates	177,600	175,700	269,726	287,470
Other income (expense) - net		1	(15,167)	(5,720)
Income (loss) before income taxes	(137,944)	(156,541)	(401,124)	(395,431)
Income tax benefit (expense)	117,837	123,792	267,140	258,588
Consolidated net income (loss)	(20,107)	(32,749)	(133,984)	(136,843)
Net income (loss) attributable to the Company	(20,107)	(32,749)	(133,984)	(136,843)
Other comprehensive income (loss), net of tax:
Unrealized holding gain (loss) on cash flow derivatives	15,935	(1,399)	24,514	11,943
Reclassification adjustment	(2)		(2)
Equity in subsidiary comprehensive income (loss)	(47,798)	41,246	(6,700)	76,896
Comprehensive income (loss)	(51,972)	7,098	(116,172)	(48,004)
Comprehensive income (loss) attributable to the Company	(51,972)	7,098	(116,172)	(48,004)
Guarantor Subsidiaries [Member]
Revenue	837,611	784,493	1,545,025	1,453,021
Operating expenses:
Direct operating expenses	199,687	196,499	419,516	391,958
Selling, general and administrative expenses	263,719	271,223	533,382	514,670
Corporate expenses	40,551	30,497	82,739	58,202
Depreciation and amortization	81,831	81,306	164,515	162,114
Other operating income (expense) - net	(829)	(1,071)	(1,708)	10,841
Operating income (loss)	250,994	203,897	343,165	336,918
Interest expense - net	5,755	(1,396)	11,721	(2,673)
Equity in earnings (loss) of nonconsolidated affiliates	(4,950)	27,639	(47,181)	20,693
Other income (expense) - net	200	(156)	186	(362)
Income (loss) before income taxes	240,489	232,776	284,449	359,922
Income tax benefit (expense)	(85,041)	(76,523)	(72,550)	(121,676)
Consolidated net income (loss)	155,448	156,253	211,899	238,246
Less amount attributable to noncontrolling interest	2,548	7,687	(615)	9,007
Net income (loss) attributable to the Company	152,900	148,566	212,514	229,239
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(307)	331	(467)	52
Unrealized holding gain (loss) on marketable securities	(11,038)	13,006	721	13,489
Reclassification adjustment	(1)
Equity in subsidiary comprehensive income (loss)	(40,644)	30,512	(7,302)	70,354
Comprehensive income (loss)	100,910	192,415	205,466	313,134
Less amount attributable to noncontrolling interest	(4,192)	2,603	(348)	6,999
Comprehensive income (loss) attributable to the Company	105,102	189,812	205,814	306,135
Non-Guarantor Subsidiaries [Member]
Revenue	768,039	824,499	1,426,235	1,481,574
Operating expenses:
Direct operating expenses	409,186	430,604	805,720	823,048
Selling, general and administrative expenses	135,782	156,731	292,705	286,937
Corporate expenses	27,838	23,038	52,148	45,021
Depreciation and amortization	100,008	108,335	192,690	211,238
Other operating income (expense) - net	2,746	4,300	6,749	9,102
Operating income (loss)	97,971	110,091	89,721	124,432
Interest expense - net	47,406	9,544	56,729	9,494
Equity in earnings (loss) of nonconsolidated affiliates	4,802	5,276	8,630	8,236
Other income (expense) - net	(1,597)	(4,362)	6,763	(471)
Income (loss) before income taxes	53,770	101,461	48,385	122,703
Income tax benefit (expense)	(25,146)	(39,166)	(30,530)	(37,123)
Consolidated net income (loss)	28,624	62,295	17,855	85,580
Less amount attributable to noncontrolling interest	8,768	7,517	7,445	6,666
Net income (loss) attributable to the Company	19,856	54,778	10,410	78,914
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(40,073)	36,234	(2,824)	75,820
Unrealized holding gain (loss) on marketable securities	(2,208)	(1,949)	(6,367)	520
Reclassification adjustment	91	59	154	148
Comprehensive income (loss)	(22,334)	89,122	1,373	155,402
Less amount attributable to noncontrolling interest	(1,546)	3,832	(1,735)	6,134
Comprehensive income (loss) attributable to the Company	(20,788)	85,290	3,108	149,268
Consolidation, Eliminations [Member]
Revenue	(3,156)	(4,606)	(8,043)	(9,383)
Operating expenses:
Direct operating expenses	(1,778)	2,912	(3,707)	(922)
Selling, general and administrative expenses	(1,378)	(7,518)	(4,336)	(8,461)
Interest expense - net	17,162	18,556	35,750	44,603
Equity in earnings (loss) of nonconsolidated affiliates	(152,649)	(170,595)	(88,940)	(171,310)
Other income (expense) - net			(9,452)
Income (loss) before income taxes	(169,811)	(189,151)	(134,142)	(215,913)
Consolidated net income (loss)	(169,811)	(189,151)	(134,142)	(215,913)
Net income (loss) attributable to the Company	(169,811)	(189,151)	(134,142)	(215,913)
Other comprehensive income (loss), net of tax:
Unrealized holding gain (loss) on marketable securities	1,929		6,377
Reclassification adjustment	1
Equity in subsidiary comprehensive income (loss)	120,307	(111,605)	(3,810)	(236,089)
Comprehensive income (loss)	(47,574)	(300,756)	(131,575)	(452,002)
Comprehensive income (loss) attributable to the Company	$ (47,574)	$ (300,756)	$ (131,575)	$ (452,002)