Debt and Other Obligations - Schedule of Long-Term Obligations (Parenthetical) (Detail)	1 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2019	Sep. 30, 2023	Sep. 30, 2022
Revolving Credit Facility, expires fiscal 2027 [Member]
Debt Instrument [Line Items]
Debt instrument due, year			2027	2027
Revolving Credit Facility - Euro, expires fiscal 2027 [Member]
Debt Instrument [Line Items]
Debt instrument due, year			2027	2027
3.4% Notes due fiscal 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			3.40%	3.40%
Debt instrument due, year			2026	2026
4.0% Notes due 2029 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate		4.00%	4.00%	4.00%
Debt instrument due, year		2029	2029	2029
5.0% Notes due fiscal 2032 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	5.00%		5.00%	5.00%
Debt instrument due, year	2032		2032	2032
Medium Term Notes due fiscal 2028, 6.57% - 7.28% [Member]
Debt Instrument [Line Items]
Debt instrument due, year			2028	2028
Medium Term Notes due fiscal 2028, 6.57% - 7.28% [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			6.57%	6.57%
Medium Term Notes due fiscal 2028, 6.57% - 7.28% [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			7.28%	7.28%
Chinese Renminbi Debt, Due Fiscal 2024, 4.3% [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			4.30%	4.30%
Debt instrument due, year			2024	2024