Receivables - Past Due Age Analysis (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Jul. 28, 2019	Oct. 28, 2018	Jul. 29, 2018
Receivable, Past Due
Minimum number of days for a receivable to be considered past due	30 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 349.0	$ 483.2	$ 463.4
Total Non-Performing	334.4	142.0	123.9
Current	32,728.3	30,021.5	30,300.0
Total Receivables	33,411.7	30,646.7	30,887.3
30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	236.5	236.9	250.9
60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	108.6	129.4	103.1
90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 3.9	$ 116.9	109.4
Retail notes
Receivable, Past Due
Generally the number of days for a financing receivable to be considered non-performing	90 days	120 days
Generally the number of days before a receivable is delinquent and the estimated uncollectible amount is written off	120 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Receivables	$ 18,596.6		17,422.0
Retail notes | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	163.5	$ 244.7	200.9
Total Non-Performing	173.2	95.9	82.1
Current	15,139.6	14,838.6	14,305.5
Total Receivables	15,476.3	15,179.2	14,588.5
Retail notes | Agriculture and turf | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	107.7	119.7	109.7
Retail notes | Agriculture and turf | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	53.0	67.5	43.9
Retail notes | Agriculture and turf | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	2.8	57.5	47.3
Retail notes | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	115.9	170.4	187.6
Total Non-Performing	115.6	28.5	28.0
Current	2,888.8	2,732.8	2,617.9
Total Receivables	3,120.3	2,931.7	2,833.5
Retail notes | Construction and forestry | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	82.3	75.9	98.0
Retail notes | Construction and forestry | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 33.6	44.8	41.8
Retail notes | Construction and forestry | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due		$ 49.7	47.8
Revolving charge accounts
Receivable, Past Due
Generally the number of days for a financing receivable to be considered non-performing	90 days	120 days
Generally the number of days before a receivable is delinquent and the estimated uncollectible amount is written off	120 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Receivables	$ 3,798.7	$ 3,797.6	3,686.9
Revolving charge accounts | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	27.5	35.7	35.3
Total Non-Performing	10.0	1.3	1.1
Current	3,662.4	3,659.2	3,548.0
Total Receivables	3,699.9	3,696.2	3,584.4
Revolving charge accounts | Agriculture and turf | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	22.4	22.8	22.8
Revolving charge accounts | Agriculture and turf | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	5.1	8.3	6.3
Revolving charge accounts | Agriculture and turf | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due		4.6	6.2
Revolving charge accounts | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	5.3	6.0	6.2
Total Non-Performing	1.4
Current	92.1	95.4	96.3
Total Receivables	98.8	101.4	102.5
Revolving charge accounts | Construction and forestry | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	3.9	4.0	3.6
Revolving charge accounts | Construction and forestry | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 1.4	1.2	1.6
Revolving charge accounts | Construction and forestry | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due		0.8	1.0
Wholesale receivables
Receivable, Past Due
Generally the number of days for a financing receivable to be considered non-performing	60 days
Generally the number of days before a receivable is delinquent and the estimated uncollectible amount is written off	60 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Receivables	$ 10,299.5	7,967.6	9,050.3
Wholesale receivables | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	5.3	3.2	4.3
Total Non-Performing	6.1	7.3	5.2
Current	8,065.2	6,135.5	7,372.1
Total Receivables	8,076.6	6,146.0	7,381.6
Wholesale receivables | Agriculture and turf | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	4.4	1.7	2.4
Wholesale receivables | Agriculture and turf | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	0.2	0.4	0.5
Wholesale receivables | Agriculture and turf | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	0.7	1.1	1.4
Wholesale receivables | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	2.8	1.2	4.1
Total Non-Performing	3.6
Current	2,216.5	1,820.4	1,664.6
Total Receivables	2,222.9	1,821.6	1,668.7
Wholesale receivables | Construction and forestry | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	1.1	$ 1.2	2.4
Wholesale receivables | Construction and forestry | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	1.5		1.7
Wholesale receivables | Construction and forestry | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 0.2
Financing leases
Receivable, Past Due
Generally the number of days for a financing receivable to be considered non-performing	90 days	120 days
Generally the number of days before a receivable is delinquent and the estimated uncollectible amount is written off	120 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Receivables	$ 716.9	$ 770.6	728.1
Financing leases | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	25.4	18.3	21.7
Total Non-Performing	22.1	8.4	6.1
Current	524.5	597.5	556.9
Total Receivables	572.0	624.2	584.7
Financing leases | Agriculture and turf | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	11.9	9.9	9.6
Financing leases | Agriculture and turf | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	13.3	6.1	6.5
Financing leases | Agriculture and turf | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	0.2	2.3	5.6
Financing leases | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	3.3	3.7	3.3
Total Non-Performing	2.4	0.6	1.4
Current	139.2	142.1	138.7
Total Receivables	144.9	146.4	143.4
Financing leases | Construction and forestry | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	2.8	1.7	2.4
Financing leases | Construction and forestry | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 0.5	1.1	0.8
Financing leases | Construction and forestry | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due		$ 0.9	$ 0.1