Debt (Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended		12 Months Ended			12 Months Ended			12 Months Ended
	Jan. 29, 2012	Jan. 30, 2011	Jan. 29, 2012 5.20% Senior Notes due March 1, 2011 [Member]	Jan. 30, 2011 5.20% Senior Notes due March 1, 2011 [Member]	Jan. 29, 2012 5.25% Senior Notes due December 16, 2013 [Member]	Jan. 30, 2011 5.25% Senior Notes due December 16, 2013 [Member]	Jan. 29, 2012 5.40% Senior Notes due March 1, 2016 [Member]	Mar. 31, 2011 5.40% Senior Notes due March 1, 2016 [Member]	Jan. 30, 2011 5.40% Senior Notes due March 1, 2016 [Member]	Jan. 29, 2012 3.95% Senior Notes due September 15, 2020 [Member]	Jan. 30, 2011 3.95% Senior Notes due September 15, 2020 [Member]	Sep. 30, 2010 3.95% Senior Notes due September 15, 2020 [Member]	Jan. 29, 2012 4.40% Senior Notes due April 1, 2021 [Member]	Mar. 31, 2011 4.40% Senior Notes due April 1, 2021 [Member]	Jan. 30, 2011 4.40% Senior Notes due April 1, 2021 [Member]	Jan. 29, 2012 5.875% Senior Notes due December 16, 2036 [Member]	Jan. 30, 2011 5.875% Senior Notes due December 16, 2036 [Member]	Jan. 29, 2012 5.40% Senior Notes due September 15, 2040 [Member]	Jan. 30, 2011 5.40% Senior Notes due September 15, 2040 [Member]	Sep. 30, 2010 5.40% Senior Notes due September 15, 2040 [Member]	Jan. 29, 2012 5.95% Senior Notes due April 1, 2041 [Member]	Mar. 31, 2011 5.95% Senior Notes due April 1, 2041 [Member]	Jan. 30, 2011 5.95% Senior Notes due April 1, 2041 [Member]	Jan. 29, 2012 Lease Obligation Costs, net [Member]	Jan. 30, 2011 Lease Obligation Costs, net [Member]	Jan. 29, 2012 Other Debt [Member]	Jan. 30, 2011 Other Debt [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 0	$ 1,000	$ 1,309	$ 1,297	$ 3,069		$ 3,033	$ 499	$ 499		$ 998		$ 0	$ 2,961	$ 2,960	$ 499	$ 499		$ 996		$ 0	$ 449	$ 452	$ 8	$ 9
Total Debt	10,788	9,749
Less current installments	30	1,042
Long-Term Debt, excluding current installments	$ 10,758	$ 8,707
Stated interest rate percentage			5.20%		5.25%		5.40%	5.40%		3.95%		3.95%	4.40%	4.40%		5.875%		5.40%		5.40%	5.95%	5.95%
Debt Instrument, Maturity Date			Mar. 01, 2011		Dec. 16, 2013		Mar. 01, 2016			Sep. 15, 2020			Apr. 01, 2021			Dec. 16, 2036		Sep. 15, 2040			Apr. 01, 2041			Jan. 31, 2055
Debt Instrument, Frequency of Periodic Payment			semi-annually on March 1 and September 1		semi-annually on June 16 and December 16		semi-annually on March 1 and September 1			semi-annually on March 15 and September 15			semi-annually on April 1 and October 1			semi-annually on June 16 and December 16		semi-annually on March 15 and September 15			semi-annually on April 1 and October 1			varying installments through January 31, 2055