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REVENUE Contract liabilities (Details) - USD ($)
12 Months Ended
Jun. 14, 2019
Oct. 31, 2019
Nov. 01, 2018
Revenue from Contract with Customer [Abstract]      
Balance at October 31, 2018   $ 461  
Impact of adopting new revenue standard     $ (64)
Balance at November 1, 2018   510 $ 397
Deferred revenue arising out of acquisitions $ 1    
Deferral of revenue billed in current period, net of recognition   386  
Revenue recognized that was deferred as of the beginning of the period   (274)  
Balance at October 31, 2019   $ 510