XML 79 R66.htm IDEA: XBRL DOCUMENT v3.21.2
Derivative Instruments - Effect of Cash Flow Hedges on Income Statement (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]        
Total revenues $ 1,327,263 $ 1,105,960 $ 3,762,657 $ 3,186,312
Revenues        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gains (losses) related to foreign currency forward contracts designated as cash flow hedges $ (3,847) $ 5,568 $ (4,996) $ 15,332