Operating Segments (Segment Information On Operating Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment Reporting Information [Line Items]
Gain on remeasurement of previously held equity interests									$ 7,898	$ 0	$ 63,605
Option Expense									(2,605)	(3,206)	(3,782)
Total Operating Income/(loss)	(362,301)	(645,164)	16,824	9,358	(119,145)	29,073	41,226	25,254	(981,283)	(23,592)	184,465
Poland [Member]
Segment Reporting Information [Line Items]
Segment before fair value adjustments									27,345	33,550	67,675
Gain on remeasurement of previously held equity interests									7,898	0	63,605
Contingent consideration true-up									0	0	(15,000)
Impairment charge									(213,687)	(131,849)	(20,309)
Total Operating Income/(loss)									(178,444)	(98,299)	95,971
Russia [Member]
Segment Reporting Information [Line Items]
Segment before fair value adjustments									42,713	77,732	90,696
Impairment charge									(844,132)	0	0
Total Operating Income/(loss)									(801,419)	77,732	90,696
Hungary [Member]
Segment Reporting Information [Line Items]
Total Operating Income/(loss)									5,448	5,442	6,149
Corporate [Member]
Segment Reporting Information [Line Items]
General corporate overhead									$ (4,263)	$ (5,261)	$ (4,569)