Unit-Based Compensation Arrangements - Summary of Activity For Restricted Units Plans (Details) - 2018 Restricted Unit Plan [Member]	6 Months Ended
	Mar. 25, 2023 $ / shares shares
Units [Rollforward]
Outstanding, beginning of period (in units) | shares	1,516,229
Awarded (in units) | shares	515,398
Forfeited (in units) | shares	(6,943)
Vested (in units) | shares	(674,752)	[1]
Outstanding, ending of period (in units) | shares	1,349,932
Weighted Average Grant Date Fair Value Per Unit [Abstract]
Outstanding, beginning of period (in dollars per unit) | $ / shares	$ 13.52
Awarded (in dollars per unit) | $ / shares	13.55
Forfeited (in dollars per unit) | $ / shares	(13.62)
Vested (in dollars per unit) | $ / shares	(14.68)	[1]
Outstanding, end of period (in dollars per unit) | $ / shares	$ 12.95

[1] During fiscal 2023, the Partnership withheld 171,840 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.