XML 47 R27.htm IDEA: XBRL DOCUMENT v3.8.0.1
Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Fuel Derivatives Outstanding (Details)
bbl in Thousands, $ in Millions
3 Months Ended 6 Months Ended
May 31, 2018
USD ($)
$ / bbl
bbl
May 31, 2017
USD ($)
May 31, 2018
USD ($)
$ / bbl
May 31, 2017
USD ($)
Derivative [Line Items]        
Gains (losses) on fuel derivatives, net | $ $ 41 $ (53) $ 57 $ (27)
Fuel        
Derivative [Line Items]        
Unrealized gains (losses) on fuel derivatives, net | $ 50 (2) 82 69
Realized losses on fuel derivatives, net | $ (9) (51) (25) (96)
Gains (losses) on fuel derivatives, net | $ $ 41 $ (53) $ 57 $ (27)
Fuel Derivatives 2018 Maturity January 2014 Transaction        
Derivative [Line Items]        
Barrels (in thousands) | bbl 1,350      
Weighted-average floor price (in dollars per barrel) | $ / bbl 75   75  
Weighted-average ceiling price (in dollars per barrel) | $ / bbl 110   110  
Fuel Derivatives 2018 Maturity October 2014 Transaction        
Derivative [Line Items]        
Barrels (in thousands) | bbl 1,500      
Weighted-average floor price (in dollars per barrel) | $ / bbl 80   80  
Weighted-average ceiling price (in dollars per barrel) | $ / bbl 114   114  
Fuel Derivatives 2018 Maturity        
Derivative [Line Items]        
Barrels (in thousands) | bbl 2,850