v3.26.1
Unit-Based Compensation Arrangements - Summary of Activity For Restricted Units Plans (Details) - 2018 Restricted Unit Plan [Member]
 9 Months Ended
Jun. 27, 2026
$ / shares
shares
Units [Rollforward]  
Outstanding, beginning of period (in units) | shares 927,421
Awarded (in units) | shares 404,185
Forfeited (in units) | shares 0
Vested (in units) | shares (456,458) [1]
Outstanding, ending of period (in units) | shares 875,148
Weighted Average Grant Date Fair Value Per Unit [Abstract]  
Outstanding, beginning of period (in dollars per unit) | $ / shares $ 14.35
Awarded (in dollars per unit) | $ / shares 16.71
Forfeited (in dollars per unit) | $ / shares 0
Vested (in dollars per unit) | $ / shares (14.47) [1]
Outstanding, end of period (in dollars per unit) | $ / shares $ 15.38
[1] During fiscal 2026, the Partnership withheld 112,454 Common Units from participants for income tax withholding purposes for those executive officers of the Partnership whose restricted units vested during the period.