Commitments and Contingencies - Commitments (Details) $ in Millions	Apr. 28, 2019 USD ($)
Limited Liability Company John Deere Financial
Commitments
Unused commitments	$ 60.3
John Deere dealers
Commitments
Unused commitments	5,600.0
Customers
Commitments
Unused commitments	$ 29,300.0
Minimum percentage of unused commitments to extend credit to customers that relate to revolving charge accounts	95.00%