Financial Instruments and Risk Management - Fair Value of the Partnership's Senior Notes (Details) - USD ($) $ in Thousands	Dec. 29, 2018	Sep. 29, 2018
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	$ 1,027,838	$ 1,094,862
5.5% Senior Notes due June 1, 2024 [Member]
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	486,680	518,112
5.75% Senior Notes due March 1, 2025 [Member]
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	232,500	242,500
5.875% Senior Notes due March 1, 2027 [Member]
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	$ 308,658	$ 334,250