Commitments and Contingencies - Commitments (Details) $ in Millions	Apr. 29, 2018 USD ($)
Commitments
Restricted other assets	$ 32.0
Limited Liability Company John Deere Financial
Commitments
Unused commitments	31.0
John Deere dealers
Commitments
Unused commitments	7,000.0
Customers
Commitments
Unused commitments	$ 27,900.0
Minimum percentage of unused commitments to extend credit to customers that relate to revolving charge accounts	95.00%