Equity And Comprehensive Income (Loss) (Schedule Of Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Mar. 31, 2012 The Company [Member]	Jun. 30, 2012 The Company [Member]	Jun. 30, 2011 The Company [Member]	Jun. 30, 2012 Noncontrolling Interests [Member]	Jun. 30, 2011 Noncontrolling Interests [Member]
Balances at January 1, The Company					$ 2,508,697	$ 2,508,697	$ 2,498,261
Balances at January 1, Noncontrolling Interests			231,530					231,530	209,794
Balances at January 1			2,740,227	2,708,055
Consolidated net income (loss)	652	34,212	(44,541)	23,820
Net income (loss) attributable to the Company	(8,116)	26,695	(51,986)	17,154		(51,986)	17,153
Net income (loss), Noncontrolling Interests	8,768	7,517	7,445	6,666				7,445	6,667
Dividends paid			(2,170,396)	0	2,170,396	(2,170,396)
Foreign currency translation adjustments	(38,343)	28,366	(4,832)	66,385		(3,097)	60,251	(1,735)	6,134
Unrealized holding gain (loss) on marketable securities	(279)	59	10	148		10	148
Reclassification adjustment						154	520
Other - net			1,786	(269)		3,581	3,210	(1,795)	(3,479)
Balances at June 30, The Company						286,963	2,579,543
Balances at June 30, Noncontrolling Interests	235,445		235,445					235,445	219,116
Balances at June 30	$ 522,408		$ 522,408