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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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

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Taxes On Earnings (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	May 02, 2015	Jan. 31, 2015	May 03, 2014
Income Tax Contingency [Line Items]
Unrecognized tax benefits	108.1us-gaap_UnrecognizedTaxBenefits	$ 101.7us-gaap_UnrecognizedTaxBenefits	$ 96.7us-gaap_UnrecognizedTaxBenefits
Income tax penalties and interest accrued	25.1	23.6	22.4
Impact of recognizing taxes and interest related to unrecognized tax benefits	54.4
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations	3.6
Earliest Tax Year [Member] \| Internal Revenue Service [Member]
Income Tax Contingency [Line Items]
Open tax year	2011
Earliest Tax Year [Member] \| State [Member]
Income Tax Contingency [Line Items]
Open tax year	2010
Latest Tax Year [Member] \| Internal Revenue Service [Member]
Income Tax Contingency [Line Items]
Open tax year	2014
Latest Tax Year [Member] \| State [Member]
Income Tax Contingency [Line Items]
Open tax year	2014