Debt (Details 2) (USD $) In Millions, unless otherwise specified	Nov. 03, 2012	Mar. 03, 2012	Oct. 29, 2011
Long-term Debt.
Total long-term debt	$ 1,702	$ 1,728	$ 2,134
Less: current portion	(544)	(43)	(442)
Total long-term debt, less current portion	1,158	1,685	1,692
Long-term debt, fair value	1,635	1,756	2,164
2013 Notes [Member]
Long-term Debt.
Total long-term debt	500	500	500
2016 Notes [Member]
Long-term Debt.
Total long-term debt	349	349	349
2021 Notes [Member]
Long-term Debt.
Total long-term debt	648	648	648
Convertible debentures [Member]
Long-term Debt.
Total long-term debt	0	0	402
Financing Lease Obligations [Member]
Long-term Debt.
Total long-term debt	130	149	156
Capital Lease Obligations [Member]
Long-term Debt.
Total long-term debt	74	81	78
Other debt [Member]
Long-term Debt.
Total long-term debt	$ 1	$ 1	$ 1