Income Taxes - Tax Sharing Agreement (Details) - USD ($) $ in Millions			3 Months Ended								12 Months Ended
	Jan. 01, 2018	Dec. 31, 2017	Nov. 03, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Nov. 03, 2019	Oct. 28, 2018	Oct. 29, 2017
Tax Sharing Agreement
Federal corporate statutory tax rate (as a percent)	21.00%	35.00%									21.00%	23.30%	35.00%
Provision (credit) for income taxes assuming computation on an unmodified, separate return basis			$ 24.1	$ 11.8	$ 35.7	$ 23.9	$ 3.1	$ 30.0	$ 6.6	$ (256.9)	$ 95.5	$ (217.2)	$ 171.5
Pro forma net income attributable to the Company			68.4	$ 144.8	$ 84.3	$ 121.7	160.4	$ 120.2	$ 119.2	$ 399.4	419.2	799.2	$ 328.4
Pro Forma
Tax Sharing Agreement
Provision (credit) for income taxes assuming computation on an unmodified, separate return basis												(198.2)
Pro forma net income attributable to the Company												780.2
Tax Sharing Agreement | John Deere
Tax Sharing Agreement
Additional tax benefit under the tax sharing agreement												$ 19.0
Federal corporate statutory tax rate (as a percent)												23.30%
Amounts due from (payable to) Deere and Company under the tax sharing agreement			$ (2.5)				$ 439.1				$ (2.5)	$ 439.1