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Fair Value Measurements - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2018
Jul. 31, 2017
Oct. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage 6.75%   6.75%    
Asset impairment charges $ 8 $ 6 $ 11 $ 13  
Goodwill $ 38   $ 38   $ 38
Cash and Cash Equivalents, Maturity Term 90 days        
Marketable Securities, Maturity Term 90 days        
Tax Exempt Bond [Member] | Manufacturing Operations [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage 6.75%   6.75%