Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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Amount of unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Taxes on Earnings (Details) - USD ($) $ in Millions	6 Months Ended
Taxes on Earnings (Details) - USD ($) $ in Millions	Jul. 29, 2017	Jan. 28, 2017	Jul. 30, 2016
Income Tax Contingency [Line Items]
Excess tax benefits related to stock-based compensation	$ 15.1
Unrecognized tax benefits	108.1	$ 98.6	$ 105.4
Income tax penalties and interest accrued	20.1	$ 17.5	$ 21.7
Impact of recognizing taxes and interest related to unrecognized tax benefits	55.2
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations (up to)	$ 3.1
Maximum \| Internal Revenue Service
Income Tax Contingency [Line Items]
Open tax year	2016
Maximum \| State
Income Tax Contingency [Line Items]
Open tax year	2016
Minimum \| Internal Revenue Service
Income Tax Contingency [Line Items]
Open tax year	2013
Minimum \| State
Income Tax Contingency [Line Items]
Open tax year	2012