Note 12 - Reduction of Inventory to Fair Value - Inventory Impairments by Homebuilding Segment (Details) $ in Millions		12 Months Ended
		Oct. 31, 2025 USD ($) Item	Oct. 31, 2024 USD ($) Item
Real Estate [Line Items]
Dollar amount of impairment		$ 21.4	$ 10.0
Home Building [Member]
Real Estate [Line Items]
Number of communities | Item		12	4
Dollar amount of impairment		$ 21.4	$ 10.0
Pre-impairment value	[1]	$ 75.4	$ 41.0
Home Building [Member] | Northeast [Member]
Real Estate [Line Items]
Number of communities | Item		6	2
Dollar amount of impairment		$ 12.4	$ 4.8
Pre-impairment value	[1]	$ 39.8	$ 16.0
Home Building [Member] | Southeast [Member]
Real Estate [Line Items]
Number of communities | Item		1	0
Dollar amount of impairment		$ 1.1	$ 0.0
Pre-impairment value	[1]	$ 4.0	$ 0.0
Home Building [Member] | West [Member]
Real Estate [Line Items]
Number of communities | Item		5	2
Dollar amount of impairment		$ 7.9	$ 5.2
Pre-impairment value	[1]	$ 31.6	$ 25.0

[1] Represents carrying value, net of prior period impairments, if any, at the time of recording the applicable period’s impairments.