Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)	Jul. 31, 2022	Sep. 30, 2020	Nov. 24, 2019	Sep. 30, 2019	Sep. 24, 2019
0.25% Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, interest rate		0.25%		0.25%
0.50% Finisar Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, interest rate		0.50%			0.50%
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount			$ 1,075,000,000
Fixed interest rate			1.52%
Floor Interest rate			0.00%
Derivative liability		$ (44,600,000)
Interest Rate Swap | Scenario Forecast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	$ 825,000,000