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OTHER COMPREHENSIVE INCOME (Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
AOCI      
Cash flow hedges $ (21,609) $ (25,178) $ (26,481)
Pension and postretirement benefit plans (71,618) (74,453) (130,185)
Total $ (93,227) $ (99,631) $ (156,666)