Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 57,153	$ 83,096	$ 119,605	$ 164,579
Discontinued operations	(797)	(1,825)	1,844	(2,380)
Equity in earnings	(27,168)	(4,445)	(61,197)	(12,756)
Income tax benefit	(46,947)	(18,470)	(43,016)	(27,135)
Reclassification out of accumulated OCI [Member] | Accumulated net gain (loss) from designated or qualifying cash flow hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense			1,361	1,923
Discontinued operations			3,666
Equity in earnings			30	73
Total before income tax and noncontrolling interest			5,057	1,996
Income tax benefit			(1,958)	(771)
Noncontrolling interest			(8)	(8)
Loss reclassified from accumulated OCI			$ 3,091	$ 1,217