Revenue - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2020	Jul. 31, 2020	May 01, 2020	Jan. 31, 2020	Oct. 31, 2019	Aug. 02, 2019	May 03, 2019	Feb. 01, 2019	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 840,957	$ 840,972	$ 929,398	$ 767,483	$ 734,379	$ 838,713	$ 962,036	$ 602,956	$ 3,378,810	$ 3,138,084	$ 2,618,650
United States
Disaggregation of Revenue [Line Items]
Net sales									2,700,694	2,413,153	1,975,562
International Countries
Disaggregation of Revenue [Line Items]
Net sales									678,116	724,931	643,088
Equipment
Disaggregation of Revenue [Line Items]
Net sales									2,985,295	2,747,935	2,210,047
Irrigation
Disaggregation of Revenue [Line Items]
Net sales									393,515	390,149	408,603
Operating Segments | Professional
Disaggregation of Revenue [Line Items]
Net sales									2,523,452	2,443,448	1,946,999
Operating Segments | Professional | United States
Disaggregation of Revenue [Line Items]
Net sales									1,976,690	1,853,054	1,441,815
Operating Segments | Professional | International Countries
Disaggregation of Revenue [Line Items]
Net sales									546,762	590,394	505,184
Operating Segments | Professional | Equipment
Disaggregation of Revenue [Line Items]
Net sales									2,175,794	2,097,965	1,582,024
Operating Segments | Professional | Irrigation
Disaggregation of Revenue [Line Items]
Net sales									347,658	345,483	364,975
Operating Segments | Residential
Disaggregation of Revenue [Line Items]
Net sales									820,745	661,274	654,413
Operating Segments | Residential | United States
Disaggregation of Revenue [Line Items]
Net sales									689,391	526,737	516,509
Operating Segments | Residential | International Countries
Disaggregation of Revenue [Line Items]
Net sales									131,354	134,537	137,904
Operating Segments | Residential | Equipment
Disaggregation of Revenue [Line Items]
Net sales									787,716	628,521	617,827
Operating Segments | Residential | Irrigation
Disaggregation of Revenue [Line Items]
Net sales									33,029	32,753	36,586
Other
Disaggregation of Revenue [Line Items]
Net sales									34,613	33,362	17,238
Other | United States
Disaggregation of Revenue [Line Items]
Net sales									34,613	33,362	17,238
Other | International Countries
Disaggregation of Revenue [Line Items]
Net sales									0	0	0
Other | Equipment
Disaggregation of Revenue [Line Items]
Net sales									21,785	21,449	10,196
Other | Irrigation
Disaggregation of Revenue [Line Items]
Net sales									$ 12,828	$ 11,913	$ 7,042