Income Taxes	9 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rate for the three months ended June 30, 2021 was 18.7% compared to 21.9% for the three months ended June 30, 2020. The rate was lower for the three months ended June 30, 2021 primarily due to lower foreign income subject to taxes in the United States compared to the three months ended June 30, 2020. The effective tax rate for the nine months ended June 30, 2021 was 18.2% compared to 17.8% for the nine months ended June 30, 2020. The rate was lower for the nine months ended June 30, 2020 primarily due to the favorable impact of excess tax benefits on deductible stock compensation compared to the nine months ended June 30, 2021. The effective tax rate for the nine months ended June 30, 2020 was also favorably impacted by the reduction of the contingent consideration accrual of $8.4 million, that was not subject to tax.

- Definition

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.

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