Unit-Based Compensation Arrangements - Summary of Activity For Restricted Units Plans (Details) - 2018 Restricted Unit Plan	9 Months Ended
	Jun. 29, 2024 $ / shares shares
Units [Rollforward]
Outstanding, beginning of period (in units) | shares	1,366,362
Awarded (in units) | shares	466,625
Forfeited (in units) | shares	0
Vested (in units) | shares	(707,524)	[1]
Outstanding, ending of period (in units) | shares	1,125,463
Weighted Average Grant Date Fair Value Per Unit [Abstract]
Outstanding, beginning of period (in dollars per unit) | $ / shares	$ 12.94
Awarded (in dollars per unit) | $ / shares	14.77
Forfeited (in dollars per unit) | $ / shares	0
Vested (in dollars per unit) | $ / shares	(13.51)	[1]
Outstanding, end of period (in dollars per unit) | $ / shares	$ 13.35

[1] During fiscal 2024, the Partnership withheld 180,787 Common Units from participants for income tax withholding purposes for those executive officers of the Partnership whose shares of restricted units vested during the period.