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REVENUE CONTRACT LIABILITIES ROLL FORWARD (Details) - USD ($)
6 Months Ended
Oct. 31, 2018
Apr. 30, 2019
Nov. 01, 2018
Contract with Customer, Liability [Abstract]      
Balance at October 31, 2018   $ 461  
Impact of adopting new revenue standard $ (64)    
Balance at November 1, 2018 461 461 $ 397
Deferral of revenue billed in current period, net of recognition   276  
Revenue recognized that was deferred as of the beginning of the period   (191)  
Foreign currency translation impact   1  
Balance at April 30, 2019 $ 461 $ 483