Financial Services, Allowances for Losses (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	May 03, 2013	May 04, 2012
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	$ 192	$ 202
Recoveries	14	13
Provision charged to income statement	28	37
Balance at end of period	179	192
Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(47)	(51)
Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	(8)	(9)
Revolving loans
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	169	179
Recoveries	13	12
Provision charged to income statement	27	36
Balance at end of period	157	169
Revolving loans | Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(44)	(49)
Revolving loans | Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	(8)	(9)
Fixed-term loans
Financing Receivable, Allowance for Credit Losses
Balance at beginning of period	23	23
Recoveries	1	1
Provision charged to income statement	1	1
Balance at end of period	22	23
Fixed-term loans | Principal
Financing Receivable, Allowance for Credit Losses
Charge-offs	(3)	(2)
Fixed-term loans | Interest
Financing Receivable, Allowance for Credit Losses
Charge-offs	$ 0	$ 0