Financing - Schedule of Total Debt (Detail) (USD $) In Thousands, unless otherwise specified	Feb. 09, 2013	Aug. 25, 2012
Debt Instrument [Line Items]
Commercial paper debt	$ 747,806	$ 513,402
Total debt	3,997,806	3,768,183
Less: Short-term borrowings	(484,533)	(49,881)
Long-term debt	3,513,273	3,718,302
5.875% Senior Notes due October 2012, effective interest rate of 6.33% [Member]
Debt Instrument [Line Items]
Long-term debt		300,000
Stated interest rate percentage	5.875%	5.875%
Effective interest rate	6.33%	6.33%
Debt instrument, due date	October 2012	October 2012
4.375% Senior Notes due June 2013, effective interest rate of 5.65% [Member]
Debt Instrument [Line Items]
Long-term debt	200,000	200,000
Stated interest rate percentage	4.375%	4.375%
Effective interest rate	5.65%	5.65%
Debt instrument, due date	June 2013	June 2013
6.500% Senior Notes due January 2014, effective interest rate of 6.63% [Member]
Debt Instrument [Line Items]
Long-term debt	500,000	500,000
Stated interest rate percentage	6.50%	6.50%
Effective interest rate	6.63%	6.63%
Debt instrument, due date	January 2014	January 2014
5.750% Senior Notes due January 2015, effective interest rate of 5.89% [Member]
Debt Instrument [Line Items]
Long-term debt	500,000	500,000
Stated interest rate percentage	5.75%	5.75%
Effective interest rate	5.89%	5.89%
Debt instrument, due date	January 2015	January 2015
5.500% Senior Notes due November 2015, effective interest rate of 4.86% [Member]
Debt Instrument [Line Items]
Long-term debt	300,000	300,000
Stated interest rate percentage	5.50%	5.50%
Effective interest rate	4.86%	4.86%
Debt instrument, due date	November 2015	November 2015
6.950% Senior Notes due June 2016, effective interest rate of 7.09% [Member]
Debt Instrument [Line Items]
Long-term debt	200,000	200,000
Stated interest rate percentage	6.95%	6.95%
Effective interest rate	7.09%	7.09%
Debt instrument, due date	June 2016	June 2016
7.125% Senior Notes due August 2018, effective interest rate of 7.28% [Member]
Debt Instrument [Line Items]
Long-term debt	250,000	250,000
Stated interest rate percentage	7.125%	7.125%
Effective interest rate	7.28%	7.28%
Debt instrument, due date	August 2018	August 2018
4.000% Senior Notes due November 2020, effective interest rate of 4.43% [Member]
Debt Instrument [Line Items]
Long-term debt	500,000	500,000
Stated interest rate percentage	4.00%	4.00%
Effective interest rate	4.43%	4.43%
Debt instrument, due date	November 2020	November 2020
3.700% Senior Notes due April 2022, effective interest rate of 3.85% [Member]
Debt Instrument [Line Items]
Long-term debt	500,000	500,000
Stated interest rate percentage	3.70%	3.70%
Effective interest rate	3.85%	3.85%
Debt instrument, due date	April 2022	April 2022
2.875% Senior Notes due January 2023, effective interest rate of 3.21%[Member]
Debt Instrument [Line Items]
Long-term debt	300,000
Stated interest rate percentage	2.875%	2.875%
Effective interest rate	3.21%	3.21%
Debt instrument, due date	January 2023	January 2023
Commercial paper, weighted average interest rate of 0.38% and 0.42% at February 9, 2013 and August 25, 2012 [Member]
Debt Instrument [Line Items]
Weighted average interest rate of commercial paper	0.38%	0.42%
Unsecured, peso denominated borrowings, weighted average interest rate of 4.57% at August 25, 2012 [Member]
Debt Instrument [Line Items]
Short-term debt		$ 4,781
Weighted average interest rate of unsecured, peso denominated borrowings	4.57%