Segment Data - Summarized Financial Information of Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Aug. 02, 2019	Jul. 31, 2020	Aug. 02, 2019	Oct. 31, 2019
Financial information concerning reportable segments
Revenues	$ 840,972	$ 838,713	$ 2,537,853	$ 2,403,705
Earnings (loss) before income taxes	110,993	71,235	318,503	278,435
Total assets	2,813,863	2,309,733	2,813,863	2,309,733	$ 2,330,547
Operating Segments | Professional
Financial information concerning reportable segments
Revenues	623,615	676,756	1,879,423	1,855,268
Earnings (loss) before income taxes	113,652	81,592	322,385	319,689
Total assets	1,967,882	1,784,707	1,967,882	1,784,707
Operating Segments | Residential
Financial information concerning reportable segments
Revenues	204,961	148,234	632,807	525,539
Earnings (loss) before income taxes	28,545	16,151	87,233	51,253
Total assets	268,562	218,528	268,562	218,528
Intersegment gross sales (eliminations)
Financial information concerning reportable segments
Revenues	(12,761)	(13,857)	(38,235)	(51,361)
Intersegment gross sales (eliminations) | Professional
Financial information concerning reportable segments
Revenues	12,738	13,779	38,151	51,104
Intersegment gross sales (eliminations) | Residential
Financial information concerning reportable segments
Revenues	23	78	84	257
Other
Financial information concerning reportable segments
Revenues	12,396	13,723	25,623	22,898
Earnings (loss) before income taxes	(31,204)	(26,508)	(91,115)	(92,507)
Total assets	$ 577,419	$ 306,498	$ 577,419	$ 306,498