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INCOME TAXES (Notes)
 9 Months Ended
Jul. 31, 2022
Income Tax Disclosure [Abstract]  
INCOME TAXES INCOME TAXES
For the three and nine months ended July 31, 2022, our income tax expense was $68 million with an effective tax rate of 17.1 percent and $163 million with an effective tax rate of 15.5 percent, respectively. For the three months ended July 31, 2022, there were no significant discrete items. The income taxes for the nine months ended July 31, 2022 include the excess tax benefits from stock-based compensation of $18 million. For the nine months ended July 31, 2022, our effective tax rate and the resulting provision for income taxes were also impacted by the expiration of various foreign statutes of limitations which resulted in the recognition of previously unrecognized tax benefits of $8 million.

Our calculation of income tax expense for the three and nine months ended July 31, 2022 is dependent in part on forecasts of full year results. The impact of COVID-19 on the economic environment is uncertain and may change these forecasts, which could impact tax expense.

For the three and nine months ended July 31, 2021, our income tax expense was $63 million with an effective tax rate of 19.3 percent and $144 million with an effective tax rate of 15.8 percent, respectively. The income taxes for the nine months ended July 31, 2021 include the excess tax benefits from stock-based compensation of $24 million. For the three and nine months ended July 31, 2021, our effective tax rate and the resulting provision for income taxes were also impacted by the expiration of various foreign statutes of limitations which resulted in the recognition of previously unrecognized tax benefits of $8 million and $24 million, respectively.

In the U.S., tax years remain open back to the year 2018 for federal income tax purposes and for significant states. In other major jurisdictions where the company conducts business, the tax years generally remain open back to the year 2012.

With these jurisdictions and the U.S., it is reasonably possible there could be significant changes to our unrecognized tax benefits in the next twelve months due to either the expiration of a statute of limitation or a tax audit settlement which will be partially offset by an anticipated tax liability related to unremitted foreign earnings, where applicable. Given the number of years and numerous matters that remain subject to examination in various tax jurisdictions, management is unable to estimate the range of possible changes to the balance of our unrecognized tax benefits.