v3.8.0.1
Document And Entity Information - USD ($)
12 Months Ended
Feb. 23, 2018
Apr. 04, 2018
Aug. 25, 2017
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Feb. 23, 2018    
Document Fiscal Period Focus Q4    
Document Fiscal Year Focus 2018    
Entity Registrant Name STEELCASE INC    
Entity Central Index Key 0001050825    
Current Fiscal Year End Date --02-23    
Entity Filer Category Large Accelerated Filer    
Entity Well-known Seasoned Issuer Yes    
Entity Public Float     $ 1,046,223,734
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Class A Common Stock [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   86,257,382  
Class B Common Stock [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   30,421,673