Income Taxes (Textual) $ in Millions	May 29, 2021 USD ($)
Statement of Financial Position [Abstract]
Liability for uncertain tax positions, current and noncurrent	$ 3.8

Liability for uncertain tax positions, current and noncurrent

No definition available.

Name:	apog_Liabilityforuncertaintaxpositionscurrentandnoncurrent
Namespace Prefix:	apog_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant