Segment Information (Reconciliation Statement Of Segment Income from Operations To Consolidated Income Before Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting [Abstract]
Income (loss) from operations	$ (234,753)	$ 119,242	$ (322,463)	$ (449,854)
Interest expense	(95,624)	(75,710)	(285,454)	(229,210)
Interest and investment income	697	1,459	4,749	3,568
Other nonoperating expenses				(19,042)
Income (loss) from continuing operations before income taxes	$ (329,680)	$ 44,991	$ (603,168)	$ (694,538)