Commitments and Contingencies - Commitments (Details) $ in Millions	Jul. 30, 2017 USD ($)
Commitments
Restricted other assets	$ 16.1
Limited Liability Company John Deere Financial
Commitments
Unused commitments	67.2
John Deere dealers
Commitments
Unused commitments	8,300.0
Customers
Commitments
Unused commitments	$ 26,200.0
Minimum percentage of unused commitments to extend credit to customers that relate to revolving charge accounts	95.00%