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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
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Mar. 31, 2020 | Nov. 30, 2019 | Aug. 31, 2019 | May 31, 2019 | Mar. 31, 2019 | Aug. 01, 2020 | May 02, 2020 | Nov. 02, 2019 | Aug. 03, 2019 | May 04, 2019 | Oct. 31, 2020 | Nov. 02, 2019
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends declared per share (in dollars per share) | $ 0.285 | $ 0.255 | $ 0.255 | $ 0.255 | $ 0.255 |  | $ 0.285 | $ 0.255 | $ 0.255 | $ 0.255 |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment purchased but not yet paid |  |  |  |  |  |  |  |  |  |  | $ 22.4 | $ 11.1
COVID-19 Pandemic |  |  |  |  |  |  |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of stores open for the period |  |  |  |  |  | 75.00% |  |  |  |  |  |

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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=120397183&loc=d3e187085-122770 + Details
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