Unit-Based Compensation Arrangements - Summary of Activity for the Restricted Units Plans (Details) - 9 months ended Jun. 27, 2015 - Restricted Stock Units (RSUs) [Member] - $ / shares	Total
Units [Rollforward]
Outstanding, beginning of period (in units)	694,927
Awarded (in units)	154,403
Forfeited (in units)	(4,348)
Issued (in units)	(209,761)
Outstanding, end of period (in units)	635,221
Weighted Average Grant Date Fair Value Per Unit [Abstract]
Outstanding, beginning of period (in dollars per unit)	$ 32.07
Awarded (in dollars per unit)	37.59
Forfeited (in dollars per unit)	(32.22)
Issued (in dollars per unit)	(36.80)
Outstanding, end of period (in dollars per unit)	$ 31.85