Income Taxes	6 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesFor each interim reporting period, the Company makes an estimate of the effective tax rate it expects to be applicable for the full fiscal year for its operations. This estimated effective rate is used in providing for income taxes on a year-to-date basis. The Company’s effective tax rate through the first six months of fiscal 2023 was (1.9)%, compared with 33.3% for the same period of fiscal 2022. The decrease in the effective rate was primarily attributable to changes in jurisdictional mix of income in fiscal 2023 compared with the same period of fiscal 2022. The effective tax rate differs from the U.S. federal statutory rate due primarily to the valuation allowance against the Company’s U.S. deferred tax assets and income in foreign jurisdictions that are taxed at different rates than the U.S. statutory tax rate. The Company is subject to income taxes in the U.S. federal jurisdiction, Ireland, Italy, and various state and local jurisdictions.