Commitments and Contingencies - Commitments (Details) $ in Millions	Jul. 29, 2018 USD ($)
Commitments
Restricted other assets	$ 15.6
Limited Liability Company John Deere Financial
Commitments
Unused commitments	77.1
John Deere dealers
Commitments
Unused commitments	7,000.0
Customers
Commitments
Unused commitments	$ 27,500.0
Minimum percentage of unused commitments to extend credit to customers that relate to revolving charge accounts	95.00%