v3.8.0.1
PARTNERS' EQUITY Table 8 - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance $ (94,177)    
Other comprehensive income (loss) 9,250 $ (5,383) $ (20,882)
Ending balance (84,927) (94,177)  
Foreign Currency Translation [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (69,069) (60,826) (28,839)
Employee Transfer   0  
Deferred income tax adjustments   0  
Other comprehensive income (loss) before reclassifications 17,466 (8,243) (31,987)
Other comprehensive income (loss) 17,466 (8,243) (31,987)
Ending balance (51,603) (69,069) (60,826)
Cash Flow Hedges [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (22,258) (27,968) (39,073)
Employee Transfer   0  
Deferred income tax adjustments   0  
Other comprehensive income (loss) before reclassifications (8,670) (2,621) 1,303
Other comprehensive income (loss) (2,046) 5,710 11,105
Ending balance (24,304) (22,258) (27,968)
Pension and Other Postretirement Benefits [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (2,850) 0 0
Employee Transfer   4,201  
Deferred income tax adjustments   2,414  
Other comprehensive income (loss) before reclassifications (4,641) (7,852) 0
Other comprehensive income (loss) (6,170) (2,850) 0
Ending balance (9,020) (2,850) 0
Total [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (94,177) (88,794) (67,912)
Employee Transfer   4,201  
Deferred income tax adjustments   2,414  
Other comprehensive income (loss) before reclassifications 4,155 (18,716) (30,684)
Other comprehensive income (loss) 9,250 (5,383) (20,882)
Ending balance (84,927) (94,177) (88,794)
Operating expense [Member] | Foreign Currency Translation [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense 0 0  
Operating expense [Member] | Cash Flow Hedges [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense 0 0  
Operating expense [Member] | Pension and Other Postretirement Benefits [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense (1,143) (1,200)  
Operating expense [Member] | Total [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense (1,143) (1,200)  
General and administrative expense [Member] | Foreign Currency Translation [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense 0 0  
General and administrative expense [Member] | Cash Flow Hedges [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense 0 0  
General and administrative expense [Member] | Pension and Other Postretirement Benefits [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense (386) (413)  
General and administrative expense [Member] | Total [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense (386) (413)  
Interest expense, net [Member] | Foreign Currency Translation [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense 0 0 0
Interest expense, net [Member] | Cash Flow Hedges [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense 6,624 8,331 9,802
Interest expense, net [Member] | Pension and Other Postretirement Benefits [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense 0 0 0
Interest expense, net [Member] | Total [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net loss (gain) reclassified from AOCI to expense $ 6,624 $ 8,331 $ 9,802