Income Taxes	9 Months Ended
Jul. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Our quarterly provision for income taxes from continuing operations is calculated using an estimated annual effective income tax rate, which is adjusted for discrete items that occur during the reporting period. Our income taxes for the three and nine months ended July 31, 2017 were favorably impacted by a benefit of $15.8 million, including interest of $1.2 million, related to expiring statute of limitations for an uncertain tax position. In addition, the nine months ended July 31, 2017 also benefited from $2.7 million of excess tax benefits related to the vesting of share-based compensation awards, $1.8 million of tax deductions for energy efficient government buildings, and the 2017 Work Opportunity Tax Credits (“WOTC”) for new hires. Our income taxes for the three and nine months ended July 31, 2016 were favorably impacted by a benefit of $19.0 million, including interest of $1.0 million, related to expiring statutes of limitations for uncertain tax positions, $1.8 million of excess tax benefits related to the vesting of share-based compensation awards, and the 2016 WOTC for new hires. In addition, the nine months ended July 31, 2016 also benefited from $4.9 million of WOTC from the retroactive reinstatement of the WOTC for calendar year 2015 and $1.2 million of tax deductions for energy efficient government buildings.

INCOME TAXES

Our quarterly provision for income taxes from continuing operations is calculated using an estimated annual effective income tax rate, which is adjusted for discrete items that occur during the reporting period.

Our income taxes for the three and nine months ended July 31, 2017 were favorably impacted by a benefit of $15.8 million, including interest of $1.2 million, related to expiring statute of limitations for an uncertain tax position. In addition, the nine months ended July 31, 2017 also benefited from $2.7 million of excess tax benefits related to the vesting of share-based compensation awards, $1.8 million of tax deductions for energy efficient government buildings, and the 2017 Work Opportunity Tax Credits (“WOTC”) for new hires.

Our income taxes for the three and nine months ended July 31, 2016 were favorably impacted by a benefit of $19.0 million, including interest of $1.0 million, related to expiring statutes of limitations for uncertain tax positions, $1.8 million of excess tax benefits related to the vesting of share-based compensation awards, and the 2016 WOTC for new hires. In addition, the nine months ended July 31, 2016 also benefited from $4.9 million of WOTC from the retroactive reinstatement of the WOTC for calendar year 2015 and $1.2 million of tax deductions for energy efficient government buildings.