Commitments and Contingencies - Commitments (Details) $ in Millions	Jan. 28, 2018 USD ($)
Commitments
Restricted other assets	$ 33.5
Limited Liability Company John Deere Financial
Commitments
Unused commitments	40.2
John Deere dealers
Commitments
Unused commitments	8,300.0
Customers
Commitments
Unused commitments	$ 27,800.0
Minimum percentage of unused commitments to extend credit to customers that relate to revolving charge accounts	95.00%