Financing (Details) (USD $) In Thousands, unless otherwise specified	Feb. 11, 2012	Aug. 27, 2011
The Company's long-term debt consisted of the following:
Long-term debt	$ 3,434,800	$ 3,317,600
5.875% Senior Notes due October 2012, effective interest rate of 6.33% [Member]
The Company's long-term debt consisted of the following:
Long-term debt	300,000	300,000
4.375% Senior Notes due June 2013, effective interest rate of 5.65% [Member]
The Company's long-term debt consisted of the following:
Long-term debt	200,000	200,000
6.500% Senior Notes due January 2014, effective interest rate of 6.63% [Member]
The Company's long-term debt consisted of the following:
Long-term debt	500,000	500,000
5.750% Senior Notes due January 2015, effective interest rate of 5.89% [Member]
The Company's long-term debt consisted of the following:
Long-term debt	500,000	500,000
5.500% Senior Notes due November 2015, effective interest rate of 4.86% [Member]
The Company's long-term debt consisted of the following:
Long-term debt	300,000	300,000
6.950% Senior Notes due June 2016, effective interest rate of 7.09% [Member]
The Company's long-term debt consisted of the following:
Long-term debt	200,000	200,000
7.125% Senior Notes due August 2018, effective interest rate of 7.28% [Member]
The Company's long-term debt consisted of the following:
Long-term debt	250,000	250,000
4.000% Senior Notes due November 2020, effective interest rate of 4.43% [Member]
The Company's long-term debt consisted of the following:
Long-term debt	500,000	500,000
Commercial paper, weighted average interest rate of 0.43% and 0.35% at February 11, 2012 and August 27, 2011, respectively [Member]
The Company's long-term debt consisted of the following:
Long-term debt	$ 684,800	$ 567,600