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Income Taxes (Details) - USD ($) $ in Millions | Aug. 31, 2019 | Mar. 02, 2019
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Income Tax Disclosure [Abstract] |  |
Liability for uncertain tax positions, current and noncurrent | $ 5.5 | $ 5.1
Liability for unrecognized tax benefit, expected decrease | $ 0.5 |

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- Definition Liability for uncertain tax positions, current and noncurrent + References No definition available. + Details
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Namespace Prefix: | apog_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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