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NEW ACCOUNTING PRONOUNCEMENTS Impact of adoption of ASC 842 (Details) - USD ($)
$ in Millions
Oct. 31, 2020
Nov. 01, 2019
Oct. 31, 2019
Operating lease right-of-use assets $ 182   $ 0
Operating Lease, Liability $ 192    
Accounting Standards Update 2016-02 [Member]      
Operating lease right-of-use assets   $ 155  
Operating Lease, Liability   $ 164