Income Taxes - Unrecognized Tax Benefits (Details) (USD $) In Millions, unless otherwise specified	11 Months Ended	12 Months Ended
Feb. 02, 2013	Jan. 31, 2015	Feb. 01, 2014
Reconciliation of changes in unrecognized tax benefits
Balance at beginning of period	$ 387us-gaap_UnrecognizedTaxBenefits	$ 370us-gaap_UnrecognizedTaxBenefits	$ 383us-gaap_UnrecognizedTaxBenefits
Gross increases related to prior period tax positions	10	33	38
Gross decreases related to prior period tax positions	(22)	(88)	(67)
Gross increases related to current period tax positions	37	114	34
Settlements with taxing authorities	(10)	(9)	(3)
Lapse of statute of limitations	(19)	(10)	(15)
Balance at end of period	383us-gaap_UnrecognizedTaxBenefits	410us-gaap_UnrecognizedTaxBenefits	370us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits that would impact the effective tax rate if recognized	231	297	228
Interest expense recognized as component of income tax expense		6
Accrued interest in income tax expense	85	78	91
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 0	$ 2	$ 2

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of interest expense accrued for an underpayment of income taxes.

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Amount of interest expense for an underpayment of income taxes.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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