Financial Instruments and Risk Management - Fair Value of the Partnership's Senior Notes (Details) - USD ($) $ in Thousands	Mar. 25, 2017	Sep. 24, 2016
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	$ 1,091,925	$ 1,148,519
7.375% Senior Notes due August 1, 2021 [Member]
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	0	360,893
5.5% Senior Notes due June 1, 2024 [Member]
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	511,875	534,188
5.75% Senior Notes due March 1, 2025 [Member]
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	241,425	253,438
5.875% Senior Notes due March 1, 2027 [Member]
Bank Debt and Senior Notes [Abstract]
Fair value of Senior Notes	$ 338,625	$ 0