Financial Services, Accretable Yield (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Aug. 03, 2012	Jul. 29, 2011	Aug. 03, 2012	Jul. 29, 2011
Accretable Yield:
Balance at beginning of period	$ 122	$ 151	$ 142	$ 137
Accretion	(19)	(23)	(39)	(44)
Prospective yield adjustment	10	24	10	59
Balance at end of period	$ 113	$ 152	$ 113	$ 152

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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The current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

The change in the estimate of cash flows expected to be collected, after acquisition of loans, which results in an increase in accretable yield (for example, if actual cash flows are significantly greater than previously expected). This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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