Income Taxes - Tax Sharing Agreement (Details) - USD ($) $ in Millions	3 Months Ended								10 Months Ended	12 Months Ended
	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Oct. 29, 2017	Jul. 30, 2017	Apr. 30, 2017	Jan. 29, 2017	Oct. 28, 2018	Oct. 28, 2018	Dec. 31, 2017	Oct. 29, 2017	Oct. 30, 2016
Tax Sharing Agreement
Federal corporate statutory tax rate (as a percent)									21.00%	23.30%	35.00%	35.00%	35.00%
Provision (credit) for income taxes assuming computation on an unmodified, separate return basis	$ 3.1	$ 30.0	$ 6.6	$ (256.9)	$ 51.6	$ 49.7	$ 36.6	$ 33.6		$ (217.2)		$ 171.5	$ 180.3
Pro forma net income attributable to the Company	160.4	$ 120.2	$ 119.2	$ 399.4	101.4	$ 88.3	$ 64.5	$ 74.2		799.2		328.4	$ 341.6
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	$ 439.1				$ (44.0)				$ 439.1	$ 439.1		$ (44.0)