SUPPLEMENTAL CASH FLOW & OTHER DATA (Continuing Operations) (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
Supplemental Cash Flow and Other Data [Line Items]
Depreciation expense	$ 52,037	$ 51,686	$ 102,895	$ 103,629
Interest expense, net	(39,921)	(41,750)	(79,786)	(83,852)
Segment, Continuing Operations [Member]
Supplemental Cash Flow and Other Data [Line Items]
Depreciation expense	52,037	51,019	102,671	102,255
Interest expense	(40,579)	(42,371)	(81,065)	(85,132)
Interest income	658	621	1,279	1,280
Interest expense, net	$ (39,921)	$ (41,750)	$ (79,786)	$ (83,852)