Income Taxes	6 Months Ended
Income Taxes	Apr. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We recorded income tax provisions of $42.0 million and $26.4 million for the three months ended April 30, 2021 and 2020, respectively. The effective tax rate was 24.7% for the three months ended April 30, 2021, compared to 25.9% for the three months ended April 30, 2020. For the six months ended April 30, 2021 and 2020, we recorded income tax provisions of $72.9 million and $35.5 million, respectively. The effective tax rate was 24.5% for the six months ended April 30, 2021, compared to 21.1% for the six months ended April 30, 2020. The higher effective tax rate for the six months ended April 30, 2021 was primarily due to a benefit recognized of $6.9 million in the fiscal 2020 period from the retroactive extension of the federal energy efficient home credit, which was enacted into law on December 20, 2019. The income tax provisions for all periods included the provision for state income taxes, interest accrued on anticipated tax assessments, excess tax benefits related to stock-based compensation, and other permanent differences. We are subject to state tax in the jurisdictions in which we operate. We estimate our state tax liability based upon the individual taxing authorities’ regulations, estimates of income by taxing jurisdiction, and our ability to utilize certain tax-saving strategies. Based on our estimate of the allocation of income or loss among the various taxing jurisdictions and changes in tax regulations and their impact on our tax strategies, we estimate that our state income tax rate for the full fiscal year 2021 will be approximately 5.8%. Our state income tax rate for the full fiscal year 2020 was 5.6%. At April 30, 2021, we had $6.8 million of gross unrecognized tax benefits, including interest and penalties. If these unrecognized tax benefits were to reverse in the future, they would have a beneficial impact on our effective tax rate at that time. During the next 12 months, it is reasonably possible that our unrecognized tax benefits will change, but we are not able to provide a range of such change. The possible changes would be principally due to the expiration of tax statutes, settlements with taxing jurisdictions, increases due to new tax positions taken, and the accrual of estimated interest and penalties.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.