XML 23 R55.htm IDEA: XBRL DOCUMENT v2.4.1.9
SUPPLEMENTAL CASH FLOW INFORMATION (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Supplemental Cash Flow Information [Abstract]      
Accrued but unpaid additions to property and equipment at December 31 $ 48,646us-gaap_CapitalExpendituresIncurredButNotYetPaid $ 49,220us-gaap_CapitalExpendituresIncurredButNotYetPaid $ 41,754us-gaap_CapitalExpendituresIncurredButNotYetPaid
Cash interest payments in excess of interest capitalized 78,744us-gaap_InterestPaid 65,824us-gaap_InterestPaid 44,579us-gaap_InterestPaid
Net cash income tax payments (refunds) $ 8,549us-gaap_IncomeTaxesPaidNet $ (5,929)us-gaap_IncomeTaxesPaidNet $ 13,150us-gaap_IncomeTaxesPaidNet