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Derivative Instruments - Effect of Derivative Instruments on AOCI and Consolidated Statements of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2019
Aug. 31, 2018
Derivative Instruments Gain Loss [Line Items]        
Revenues $ 6,203,659 $ 4,822,268 $ 17,176,000 $ 14,223,898
Selling, general and administrative expenses (517,135) (316,274) (1,557,906) (923,449)
Interest expense and finance charges, net (42,945) (20,058) (127,695) (53,884)
Other income (expense), net (1,087) (872) 19,764 (3,497)
Service        
Derivative Instruments Gain Loss [Line Items]        
Revenues 1,155,690 487,513 3,480,275 1,477,308
Cost of revenue (731,472) (308,322) (2,196,212) (926,998)
Cash Flow Hedging        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) recognized in OCI (32,466) 1,045 (96,020) 8,386
Cash Flow Hedging | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 4,492 (22) 12,629 2,433
Cash Flow Hedging | Foreign Exchange Forward Contracts        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) recognized in OCI 1,592 0 8,304 0
Cash Flow Hedging | Foreign Exchange Forward Contracts | Revenue for Services | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 73 0 89 0
Cash Flow Hedging | Foreign Exchange Forward Contracts | Cost of Revenue for Services | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 4,586 0 12,034 0
Cash Flow Hedging | Foreign Exchange Forward Contracts | Selling, General and Administrative Expenses | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 1,888 0 5,041 0
Cash Flow Hedging | Foreign Exchange Forward Contracts | Other Income (Expense), Net | Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) reclassified from "AOCI" into income 10 0 10 0
Cash Flow Hedging | Interest Rate Swap        
Derivative Instruments Gain Loss [Line Items]        
Gains (Losses) recognized in OCI (34,058) 1,045 (104,323) 8,386
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 (2,065) (22) (4,545) 2,433
Not Designated as Hedging Instrument        
Derivative Instruments Gain Loss [Line Items]        
Derivative Instruments not designated as hedging instruments (2,093) (8,446) 5,673 (2,771)
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] (1,286) (8,469) 8,657 (2,794)
Not Designated as Hedging Instrument | Interest Expense and Finance Charges, Net        
Derivative Instruments Gain Loss [Line Items]        
Gains (losses) recognized from interest rate swaps, net $ (807) $ 23 $ (2,984) $ 23
[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.