Leases (Details) (USD $) In Millions, unless otherwise specified	Feb. 25, 2012
Operating Leases
2013	$ 358
2014	355
2015	322
2016	285
2017	244
Thereafter	1,321
Total future minimum obligations	2,885
Capital Leases
2013	150
2014	149
2015	145
2016	142
2017	135
Thereafter	1,162
Total future minimum obligations	1,883
Less interest	(787)
Present value of net future minimum obligations	1,096
Less current obligations	(65)
Long-term obligations	$ 1,031