Receivables - Impaired Receivables (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Jan. 27, 2019	Jan. 28, 2018	Oct. 28, 2018
Recorded Investment
Receivables with specific allowance	$ 6.7	$ 8.2	$ 6.6
Receivables without specific allowance	24.2	28.2	26.3
Total	30.9	36.4	32.9
Unpaid Principal Balance
Receivables with specific allowance	6.6	8.2	6.4
Receivables without specific allowance	23.7	27.9	26.0
Total	30.3	36.1	32.4
Specific Allowance	2.9	2.7	2.9
Average Recorded Investment
Receivables with specific allowance	6.5	9.6	7.6
Receivables without specific allowance	24.5	27.0	28.7
Total	31.0	36.6	36.3
Agriculture and turf
Recorded Investment
Total	26.4	30.1	28.8
Unpaid Principal Balance
Total	25.9	29.8	28.4
Specific Allowance	2.9	2.7	2.9
Average Recorded Investment
Total	26.6	30.9	31.7
Construction and forestry
Recorded Investment
Total	4.5	6.3	4.1
Unpaid Principal Balance
Total	4.4	6.3	4.0
Average Recorded Investment
Total	4.4	5.7	4.6
Retail notes
Recorded Investment
Receivables with specific allowance	0.8		0.8
Receivables without specific allowance	24.1	22.9	23.9
Unpaid Principal Balance
Receivables with specific allowance	0.7		0.6
Receivables without specific allowance	23.6	22.6	23.6
Specific Allowance	0.1		0.1
Average Recorded Investment
Receivables with specific allowance	0.8		0.9
Receivables without specific allowance	24.1	20.5	26.1
Wholesale receivables
Recorded Investment
Receivables with specific allowance	5.9	8.2	5.8
Receivables without specific allowance	0.1	5.3	2.4
Unpaid Principal Balance
Receivables with specific allowance	5.9	8.2	5.8
Receivables without specific allowance	0.1	5.3	2.4
Specific Allowance	2.8	2.7	2.8
Average Recorded Investment
Receivables with specific allowance	5.7	9.6	6.7
Receivables without specific allowance	$ 0.4	$ 6.5	$ 2.6

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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