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Derivative Instruments - Effect of Derivative Instruments on AOCI and Consolidated Statements of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 31, 2019
May 31, 2018
May 31, 2019
May 31, 2018
Derivative Instruments Gain Loss [Line Items]        
Revenues $ 5,722,889 $ 4,908,281 $ 10,972,341 $ 9,401,631
Selling, general and administrative expenses (523,813) (305,156) (1,040,771) (607,175)
Interest expense and finance charges, net (43,144) (16,375) (84,750) (33,826)
Other income (expense), net 21,546 (1,446) 20,851 (2,624)
Service        
Derivative Instruments Gain Loss [Line Items]        
Revenues 1,155,816 486,188 2,324,585 989,795
Cost of revenue (727,324) (304,352) (1,464,739) (618,675)
Cash Flow Hedging        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) recognized in OCI (40,942) 41 (63,554) 7,341
Cash Flow Hedging | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 4,697 2,695 8,137 2,455
Cash Flow Hedging | Foreign Exchange Contracts        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) recognized in OCI 277   6,712  
Cash Flow Hedging | Foreign Exchange Contracts | Revenue for Services | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 24   16  
Cash Flow Hedging | Foreign Exchange Contracts | Cost of Revenue for Services | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 4,128   7,448  
Cash Flow Hedging | Foreign Exchange Contracts | Selling, General and Administrative Expenses | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 1,692   3,153  
Cash Flow Hedging | Interest Rate Swap        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) recognized in OCI (41,219) 41 (70,265) 7,341
Cash Flow Hedging | Interest Rate Swap | Interest Expense and Finance Charges, Net | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income (1,147) 2,695 (2,480) 2,455
Not Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Derivative Instruments not designated as hedging instruments 6,103 8,709 7,766 5,675
Not Designated as Hedging Instrument | Other Income (Expense), Net        
Derivative Instruments Gain Loss [Line Items]        
Gains (losses) recognized from foreign exchange forward contracts, net [1] 7,291 $ 8,709 9,943 $ 5,675
Not Designated as Hedging Instrument | Interest Expense and Finance Charges, Net        
Derivative Instruments Gain Loss [Line Items]        
Loss recognized from interest rate swaps, net $ (1,188)   $ (2,177)  
[1] The gains and losses largely offset the currency gains and losses that resulted from changes in the assets and liabilities denominated in nonfunctional currencies.