Condensed Consolidating Financial Information (Schedule Of Condensed Consolidating Statement Of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	$ 388,687	$ 310,253
Net cash used in investing activities - continuing operations	(654,181)	(503,401)
Net cash provided by (used in) financing activities - continuing operations	123,151	17,439
Net cash provided by (used in) discontinued operations	(7,935)	128,823
Net Decrease in Cash and Cash Equivalents	(150,278)	(46,886)
Cash and Cash Equivalents, Beginning of Period	157,439	52,614
Cash and Cash Equivalents, End of Period	7,161	5,728
Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	0	0
Net cash used in investing activities - continuing operations	135,301	270,884
Net cash provided by (used in) financing activities - continuing operations	(135,301)	(270,884)
Net cash provided by (used in) discontinued operations	0	0
Net Decrease in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents, Beginning of Period	0	0
Cash and Cash Equivalents, End of Period	0	0
Parent Company [Member] | Reportable Legal Entities [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	(132,889)	(22,222)
Net cash used in investing activities - continuing operations	(132,605)	(170,725)
Net cash provided by (used in) financing activities - continuing operations	123,151	17,439
Net cash provided by (used in) discontinued operations	(7,935)	129,342
Net Decrease in Cash and Cash Equivalents	(150,278)	(46,166)
Cash and Cash Equivalents, Beginning of Period	157,439	51,894
Cash and Cash Equivalents, End of Period	7,161	5,728
Combined Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	521,576	332,475
Net cash used in investing activities - continuing operations	(632,160)	(601,936)
Net cash provided by (used in) financing activities - continuing operations	110,584	269,260
Net cash provided by (used in) discontinued operations	0	0
Net Decrease in Cash and Cash Equivalents	0	(201)
Cash and Cash Equivalents, Beginning of Period	0	201
Cash and Cash Equivalents, End of Period	0	0
Combined Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	0	0
Net cash used in investing activities - continuing operations	(24,717)	(1,624)
Net cash provided by (used in) financing activities - continuing operations	24,717	1,624
Net cash provided by (used in) discontinued operations	0	(519)
Net Decrease in Cash and Cash Equivalents	0	(519)
Cash and Cash Equivalents, Beginning of Period	0	519
Cash and Cash Equivalents, End of Period	$ 0	$ 0