Equity And Comprehensive Loss (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Realized gain on sale of marketable securities	$ 130,898	$ 0	$ 130,898	$ 0
Income tax expense	11,477	(8,663)	(84,848)	(166,061)
Reduction of "Other comprehensive income (loss)"	(82,320)	0	(82,320)	0
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Realized gain on sale of marketable securities			130,900
Income tax expense			48,600
Reduction of "Other comprehensive income (loss)"			$ 82,300