Shareholder's Deficit And Comprehensive Loss (Schedule Of Changes In Equity) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Balances at January 1,	$ (10,606,681)	$ (9,665,208)
Net income (loss)	(58,894)	(386,634)
Dividends and other payments to noncontrolling interests	(54,267)	(2,119)
Purchases of additional noncontrolling interest	0	(20,400)
Share Based Compensation	3,094	2,524
Foreign currency translation adjustments	27,577	(82,159)
Unrealized holding gain (loss) on marketable securities	(36)	822
Unrealized holding gain on cash flow derivatives	0	0
Other adjustments to comprehensive loss	0	(1,154)
Reclassifications	0	0
Other, net	(638)	645
Balances at March 31,	(10,689,845)	(10,153,683)
The Company [Member]
Balances at January 1,	(10,784,296)	(9,889,348)
Net income (loss)	(88,515)	(384,966)
Dividends and other payments to noncontrolling interests	0	0
Purchases of additional noncontrolling interest	0	(19,264)
Share Based Compensation	709	599
Foreign currency translation adjustments	22,692	(75,840)
Unrealized holding gain (loss) on marketable securities	(32)	738
Unrealized holding gain on cash flow derivatives	0
Other adjustments to comprehensive loss	0	(1,036)
Reclassifications	0
Other, net	(1,226)	(6)
Balances at March 31,	(10,850,668)	(10,369,123)
Noncontrolling Interest [Member]
Balances at January 1,	177,615	224,140
Net income (loss)	29,621	(1,668)
Dividends and other payments to noncontrolling interests	(54,267)	(2,119)
Purchases of additional noncontrolling interest	0	(1,136)
Share Based Compensation	2,385	1,925
Foreign currency translation adjustments	4,885	(6,319)
Unrealized holding gain (loss) on marketable securities	(4)	84
Unrealized holding gain on cash flow derivatives	0
Other adjustments to comprehensive loss	0	(118)
Reclassifications	0
Other, net	588	651
Balances at March 31,	$ 160,823	$ 215,440