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Commitments and Contingencies - Commitments (Details)
$ in Millions
Apr. 30, 2017
USD ($)
Commitments  
Restricted other assets $ 17.7
John Deere dealers  
Commitments  
Unused commitments 8,300.0
Customers  
Commitments  
Unused commitments $ 26,800.0
Minimum percentage of unused commitments to extend credit to customers that relate to revolving charge accounts 95.00%