Unit-Based Compensation Arrangements - Summary of Activity In the Restricted Units Plans (Details) - 2009 Restricted Unit Plan [Member] - $ / shares		12 Months Ended
		Sep. 24, 2022	Sep. 25, 2021	Sep. 26, 2020
Units [Rollforward]
Outstanding, beginning of period (in units)		1,231,863	961,816	988,339
Awarded (in units)		884,658	779,837	471,111
Forfeited (in units)		(12,845)	(26,070)	(9,975)
Vested (in units)	[1]	(587,447)	(483,720)	(487,659)
Outstanding, end of period (in units)		1,516,229	1,231,863	961,816
Weighted Average Grant Date Fair Value Per Unit [Abstract]
Outstanding, beginning of period (in dollars per unit)		$ 15.26	$ 17.60	$ 18.12
Awarded (in dollars per unit)		12.97	14.43	18.19
Forfeited (in dollars per unit)		(13.88)	(15.29)	(18.01)
Vested (in dollars per unit)	[1]	(16.32)	(18.58)	(19.22)
Outstanding, end of period (in dollars per unit)		$ 13.52	$ 15.26	$ 17.60

[1] During fiscal 2022, 2021 and 2020, the Partnership withheld 138,039, 92,336 and 76,453 Common Units, respectively, from participants for income tax withholding purposes for those executive officers of the Partnership whose shares of restricted units vested during the period.