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Equity-Based Compensation - Stock Option & RSU - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Oct. 08, 2020	Jun. 30, 2026	Jun. 28, 2025	Jun. 30, 2026	Jun. 30, 2026	Jun. 28, 2025	Apr. 20, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, grants in period, gross (in shares)		0	0	0		0
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount		$ 100		$ 100	$ 100
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition				8 months 12 days
Share-based payment arrangement, expense		9,477	$ 0	$ 32,359		$ 0
Market and service condition based options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, grants in period, gross (in shares)				0		0
Share-based payment arrangement, nonvested award, cost not yet recognized, amount		0		$ 0	0
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized (in shares)	341,666
Grants in period, weighted average grant date fair value (in usd per share)	$ 120.00
Options, nonvested, number of shares (in shares)							273,333
Share-based compensation arrangement by share-based payment award, options, vested in period, fair value				1,200
Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount		54,700		$ 54,700	54,700
Granted (in shares)				371,167
Equity instruments other than options, vested in period, fair value				$ 16,300
Weighted average period				2 years 4 months 24 days
Aggregate intrinsic value		21,200		$ 21,200	21,200
Performance based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount		5,100		5,100	$ 5,100
Share-based compensation arrangement by share-based payment award, options, vested in period, fair value				$ 5,700
Granted (in shares)				129,689	129,689
Share-based payment arrangement, expense		1,100	$ 0	$ 4,200		$ 0
Market and Service Condition Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount		2,400		2,400	$ 2,400
Share-based payment arrangement, expense		$ 300		$ 800