Commitments and Contingencies - Commitments (Details) $ in Millions	Jan. 27, 2019 USD ($)
Limited Liability Company John Deere Financial
Commitments
Unused commitments	$ 59.4
John Deere dealers
Commitments
Unused commitments	7,000.0
Customers
Commitments
Unused commitments	$ 29,000.0
Minimum percentage of unused commitments to extend credit to customers that relate to revolving charge accounts	95.00%