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Subsequent Event (Details) - USD ($) shares in Thousands, $ in Millions | 1 Months Ended | 6 Months Ended
--- | --- | ---
Aug. 31, 2017 | Jul. 29, 2017 | Jul. 30, 2016
Subsequent Event [Line Items] |  |  |
Shares Repurchased |  | 2,656 | 4,968
Amount Repurchased |  | $ 132.0 | $ 388.0
February 2017 Repurchase Program [Member] [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Shares Repurchased |  | 2,605 |
Amount Repurchased |  | $ 129.0 |
February 2017 Repurchase Program [Member] [Member] | Subsequent Event [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Shares Repurchased | 2,400 |  |
Amount Repurchased | $ 90.0 |  |
February 2016 Repurchase Program [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Shares Repurchased |  | 51 | 4,968
Amount Repurchased |  | $ 3.0 | $ 388.0

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 + Details
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Period Type: | duration

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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Details
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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |