CONDENSED CONSOLIDATED STATEMENT OF PARTNERS' CAPITAL (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Common Unitholders [Member]	Accumulated Other Comprehensive (Loss) [Member]	Total	Comprehensive Income [Member]
Balance at Sep. 24, 2011	$ 418,134	$ (59,916)	$ 358,218
Balance (in units) at Sep. 24, 2011	35,429
Increase (Decrease) in Partners' Capital [Rollfoward]
Net income	72,805		72,805	72,805
Other comprehensive income:
Unrealized losses on cash flow hedges		(378)	(378)	(378)
Reclassification of realized losses on cash flow hedges into earnings		1,338	1,338	1,338
Amortization of net actuarial losses and prior service credits into earnings		2,390	2,390	2,390
Comprehensive income				76,155
Partnership distributions	(60,490)		(60,490)
Common Units issued under Restricted Unit Plans (in units)	72
Compensation cost recognized under Restricted Unit Plans, net of forfeitures	2,350		2,350
Balance at Mar. 24, 2012	$ 432,799	$ (56,566)	$ 376,233
Balance (in units) at Mar. 24, 2012	35,501