FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value (Details) - Fair Value, Measurements, Recurring $ in Thousands, £ in Millions	Jun. 24, 2022 GBP (£)	Jun. 24, 2022 USD ($)	Sep. 30, 2021 GBP (£)	Sep. 30, 2021 USD ($)
Assets
Forward currency contracts | £	£ 30.6		£ 37.4
Level 1
Assets
Cash equivalents		$ 97,476		$ 489,987
Forward currency contracts		0		0
Liabilities
Forward currency contracts		0		0
Level 2
Assets
Cash equivalents		0		0
Forward currency contracts		3,381		127
Liabilities
Forward currency contracts		$ 472		$ 183