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Note 12 - Reduction of Inventory to Fair Value - Inventory Impairments by Homebuilding Segment (Details)
$ in Millions
12 Months Ended
Oct. 31, 2022
USD ($)
Oct. 31, 2021
USD ($)
Oct. 31, 2020
USD ($)
Dollar amount of impairment $ 8.4 $ 2.0 $ 2.0
Homebuilding [Member]      
Number of communities 1 3 2
Dollar amount of impairment $ 8.4 $ 2.0 $ 2.0
Pre-impairment value [1] $ 10.6 $ 11.5 $ 4.8
Homebuilding [Member] | Northeast [Member]      
Number of communities 0 0 2
Dollar amount of impairment $ 0.0 $ 0.0 $ 2.0
Pre-impairment value [1] $ 0.0 $ 0.0 $ 4.8
Homebuilding [Member] | Southeast [Member]      
Number of communities 0 2 0
Dollar amount of impairment $ 0.0 $ 1.2 $ 0.0
Pre-impairment value [1] $ 0.0 $ 9.2 $ 0.0
Homebuilding [Member] | West [Member]      
Number of communities 1 1 0
Dollar amount of impairment $ 8.4 $ 0.8 $ 0.0
Pre-impairment value [1] $ 10.6 $ 2.3 $ 0.0
[1] Represents carrying value, net of prior period impairments, if any, at the time of recording the applicable period's impairments.