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Fair Value Hierarchy of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions | Feb. 22, 2019 | Feb. 23, 2018 | Feb. 24, 2017 | Feb. 26, 2016
--- | --- | --- | --- | ---
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Restricted Cash |  | $ 2.5 |  | $ 2.5
Foreign Currency Contract, Asset, Fair Value Disclosure | $ 3.9 | 2.1 |  |
Liabilities, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | (0.5) | (1.4) |  |
Fair Value, Measurements, Recurring [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 261.3 | 283.1 |  |
Restricted Cash | 3.5 | 2.5 |  |
Assets, Fair Value Disclosure | 272.6 | 291.2 |  |
Liabilities, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | (0.5) | (1.4) |  |
Liabilities, Fair Value Disclosure | 0.5 | 1.4 |  |
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Contract [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 3.9 | 2.1 |  |
Fair Value, Measurements, Recurring [Member] | Auction Rate Securities [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Available-for-sale Securities, Fair Value Disclosure | 3.9 | 3.5 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 261.3 | 283.1 |  |
Restricted Cash | 3.5 | 2.5 |  |
Assets, Fair Value Disclosure | 264.8 | 285.6 |  |
Liabilities, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0.0 | 0.0 |  |
Liabilities, Fair Value Disclosure | 0.0 | 0.0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign Exchange Contract [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0.0 | 0.0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Auction Rate Securities [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Available-for-sale Securities, Fair Value Disclosure | 0.0 | 0.0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 0.0 | 0.0 |  |
Restricted Cash | 0.0 | 0.0 |  |
Assets, Fair Value Disclosure | 3.9 | 2.1 |  |
Liabilities, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | (0.5) | (1.4) |  |
Liabilities, Fair Value Disclosure | 0.5 | 1.4 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 3.9 | 2.1 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Auction Rate Securities [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Available-for-sale Securities, Fair Value Disclosure | 0.0 | 0.0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 0.0 | 0.0 |  |
Restricted Cash | 0.0 | 0.0 |  |
Assets, Fair Value Disclosure | 3.9 | 3.5 |  |
Liabilities, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0.0 | 0.0 |  |
Liabilities, Fair Value Disclosure | 0.0 | 0.0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Exchange Contract [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0.0 | 0.0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Auction Rate Securities [Member] |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Available-for-sale Securities, Fair Value Disclosure | $ 3.9 | $ 3.5 | $ 3.5 |

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. + References Reference 1: 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(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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