Subsequent Event (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Dec. 31, 2016	Jan. 31, 2017	Oct. 31, 2016	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Subsequent Event
Cash dividends declared and paid to JDFS				$ 485.0	$ 485.0	$ 140.0
Voluntary Employee Separations
Voluntary Employee Separations
Total expected voluntary separation program costs, pretax			$ 7.6	$ 7.6
Incurred voluntary separate program costs, pretax			$ 0.2
Voluntary Employee Separations | Forecasted
Voluntary Employee Separations
Incurred voluntary separate program costs, pretax		$ 7.4
Subsequent Event
Subsequent Event
Dividend from JDFS paid to Deere & Co.	$ 140.0
Subsequent Event | John Deere Financial Services, Inc.
Subsequent Event
Cash dividends declared and paid to JDFS	$ 140.0