Financial Services, Allowances for Losses (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 02, 2012	Oct. 28, 2011	Nov. 02, 2012	Oct. 28, 2011
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	$ 189	$ 210	$ 202	$ 241
Recoveries	13	10	49	42
Provision charged to income statement	41	32	107	100
Balance at end of period	185	197	185	197
Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(50)	(47)	(148)	(158)
Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	(8)	(8)	(25)	(28)
Revolving Loans
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	168	189	179	214
Recoveries	12	9	46	39
Provision charged to income statement	33	30	96	102
Balance at end of period	163	175	163	175
Revolving Loans | Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(42)	(45)	(133)	(152)
Revolving Loans | Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	(8)	(8)	(25)	(28)
Fixed-term loans
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	21	21	23	27
Recoveries	1	1	3	3
Provision charged to income statement	8	2	11	(2)
Balance at end of period	22	22	22	22
Fixed-term loans | Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(8)	(2)	(15)	(6)
Fixed-term loans | Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	$ 0	$ 0	$ 0	$ 0