SPECIAL ITEMS - Employee-Separation Programs (Details) $ in Millions	12 Months Ended
	Nov. 01, 2020 USD ($)
OPEB
Employee-Separation Programs
Curtailments	$ 34
Location of curtailments	Other operating expenses
2020 Employee-Separation Programs
Employee-Separation Programs
Total employee-separation programs' pretax expenses	$ 335
2020 Employee-Separation Programs | OPEB
Employee-Separation Programs
Curtailments	$ 34
Location of curtailments	Other operating expenses
2020 Employee-Separation Programs | Cost of Sales
Employee-Separation Programs
Total employee-separation programs' pretax expenses	$ 104
2020 Employee-Separation Programs | Research and Development
Employee-Separation Programs
Total employee-separation programs' pretax expenses	55
2020 Employee-Separation Programs | Selling, Administrative and General Expenses
Employee-Separation Programs
Total employee-separation programs' pretax expenses	135
2020 Employee-Separation Programs | Operating Profit
Employee-Separation Programs
Total employee-separation programs' pretax expenses	294
2020 Employee-Separation Programs | Non-operating Profit
Employee-Separation Programs
Total employee-separation programs' pretax expenses	41
2020 Employee-Separation Programs | Production & Precision Ag (PPA) | Cost of Sales
Employee-Separation Programs
Total employee-separation programs' pretax expenses	51
2020 Employee-Separation Programs | Production & Precision Ag (PPA) | Research and Development
Employee-Separation Programs
Total employee-separation programs' pretax expenses	29
2020 Employee-Separation Programs | Production & Precision Ag (PPA) | Selling, Administrative and General Expenses
Employee-Separation Programs
Total employee-separation programs' pretax expenses	53
2020 Employee-Separation Programs | Production & Precision Ag (PPA) | Operating Profit
Employee-Separation Programs
Total employee-separation programs' pretax expenses	133
2020 Employee-Separation Programs | Small Ag & Turf (SAT) | Cost of Sales
Employee-Separation Programs
Total employee-separation programs' pretax expenses	31
2020 Employee-Separation Programs | Small Ag & Turf (SAT) | Research and Development
Employee-Separation Programs
Total employee-separation programs' pretax expenses	18
2020 Employee-Separation Programs | Small Ag & Turf (SAT) | Selling, Administrative and General Expenses
Employee-Separation Programs
Total employee-separation programs' pretax expenses	43
2020 Employee-Separation Programs | Small Ag & Turf (SAT) | Operating Profit
Employee-Separation Programs
Total employee-separation programs' pretax expenses	92
2020 Employee-Separation Programs | Construction & Forestry (CF) | Cost of Sales
Employee-Separation Programs
Total employee-separation programs' pretax expenses	22
2020 Employee-Separation Programs | Construction & Forestry (CF) | Research and Development
Employee-Separation Programs
Total employee-separation programs' pretax expenses	8
2020 Employee-Separation Programs | Construction & Forestry (CF) | Selling, Administrative and General Expenses
Employee-Separation Programs
Total employee-separation programs' pretax expenses	24
2020 Employee-Separation Programs | Construction & Forestry (CF) | Operating Profit
Employee-Separation Programs
Total employee-separation programs' pretax expenses	54
2020 Employee-Separation Programs | Financial Services (FS) | OPEB
Employee-Separation Programs
Curtailments	$ 6
Location of curtailments	Other operating expenses
2020 Employee-Separation Programs | Financial Services (FS) | Selling, Administrative and General Expenses
Employee-Separation Programs
Total employee-separation programs' pretax expenses	$ 15
2020 Employee-Separation Programs | Financial Services (FS) | Operating Profit
Employee-Separation Programs
Total employee-separation programs' pretax expenses	$ 15