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STOCKHOLDERS' EQUITY (Changes in Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance $ 2,433 $ 2,310 $ 1,513
Other comprehensive income (loss) (90) (31) 161
Ending Balance 3,004 2,433 2,310
AOCI Including Portion Attributable to Noncontrolling Interest [Member]      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (488) (457)  
Other comprehensive income (loss) before reclassifications (156) (61)  
Amounts reclassified out of accumulated other comprehensive income 33 27  
Tax (expense) benefit 33 3  
Other comprehensive income (loss) (90) (31)  
Ending Balance (578) (488) (457)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest [Member]      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance 0 14  
Other comprehensive income (loss) before reclassifications 0 (17)  
Amounts reclassified out of accumulated other comprehensive income 0 0  
Tax (expense) benefit 0 3  
Other comprehensive income (loss) 0 (14)  
Ending Balance 0 0 14
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (60) (39)  
Other comprehensive income (loss) before reclassifications 17 (21)  
Amounts reclassified out of accumulated other comprehensive income 0 0  
Tax (expense) benefit 0 0  
Other comprehensive income (loss) 17 (21)  
Ending Balance (43) (60) (39)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member]      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (445) (468)  
Other comprehensive income (loss) before reclassifications (168) (23)  
Amounts reclassified out of accumulated other comprehensive income 49 53  
Tax (expense) benefit 28 (7)  
Other comprehensive income (loss) (91) 23  
Ending Balance (536) (445) (468)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member]      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance 19 35  
Other comprehensive income (loss) before reclassifications 0 0  
Amounts reclassified out of accumulated other comprehensive income (19) (22)  
Tax (expense) benefit 4 6  
Other comprehensive income (loss) (15) (16)  
Ending Balance 4 19 35
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Beginning Balance (2) 1  
Other comprehensive income (loss) before reclassifications (5) 0  
Amounts reclassified out of accumulated other comprehensive income 3 (4)  
Tax (expense) benefit 1 1  
Other comprehensive income (loss) (1) (3)  
Ending Balance $ (3) $ (2) $ 1