Company-Owned Life Insurance Narrative (Details) - USD ($) $ in Millions	Feb. 24, 2017	Feb. 26, 2016
Company-Owned Life Insurance [Abstract]
Post-retirement medical benefits, deferred compensation and supplemental retirement plan obligations	$ 146
Deferred tax asset related to post-retirement medical benefits, deferred compensation and supplemental retirement plan obligations		$ 54

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from defined benefit pension plans and other postretirement and postemployment benefit plans and deferred compensation plans.

No definition available.

Name:	scs_Deferredtaxassetrelatedtopostretirementmedicalbenefitsdeferredcompensationandsupplementalretirementplanobligations
Namespace Prefix:	scs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant