SPECIAL ITEMS - Impairments and Other Benefit (Details) $ in Millions	3 Months Ended
	Jan. 31, 2021 USD ($)
Impairments and Other Benefit
Long-lived asset impairments, pretax	$ 50
Impairments and Other Benefit | Cost of Sales
Impairments and Other Benefit
Long-lived asset impairments, pretax	50
Indirect tax benefit, pretax	(58)
Total expense (benefit), pretax	(8)
Impairments and Other Benefit | Cost of Sales | Foreign Tax Authority | Brazil
Impairments and Other Benefit
Indirect tax benefit, pretax	(58)
Impairments and Other Benefit | Production & Precision Ag | Cost of Sales
Impairments and Other Benefit
Long-lived asset impairments, pretax	5
Indirect tax benefit, pretax	(53)
Total expense (benefit), pretax	(48)
Impairments and Other Benefit | Small Ag & Turf | Cost of Sales
Impairments and Other Benefit
Long-lived asset impairments, pretax	3
Total expense (benefit), pretax	3
Impairments and Other Benefit | Construction & Forestry | Cost of Sales
Impairments and Other Benefit
Long-lived asset impairments, pretax	42
Indirect tax benefit, pretax	(5)
Total expense (benefit), pretax	37
Impairments and Other Benefit | German Asphalt Plant Factory | Cost of Sales
Impairments and Other Benefit
Long-lived asset impairments, pretax	38
Fixed asset impairment, after-tax	38
Impairments and Other Benefit | Manufacturing Locations | Cost of Sales
Impairments and Other Benefit
Long-lived asset impairments, pretax	$ 12