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Company-Owned Life Insurance (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Feb. 27, 2015
Feb. 28, 2014
Feb. 22, 2013
Investment [Line Items]      
Company-owned life insurance (COLI) $ 159.5us-gaap_CashSurrenderValueOfLifeInsurance $ 154.3us-gaap_CashSurrenderValueOfLifeInsurance  
COLI Investment Income 5.8scs_ColiIncome 4.2scs_ColiIncome 8.8scs_ColiIncome
Cost of Sales [Member]      
Investment [Line Items]      
COLI Investment Income 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember		 0.6scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember		 1.2scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
Operating Expense [Member]      
Investment [Line Items]      
COLI Investment Income 5.8scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember		 5.4scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember		 4.6scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
Operating Income [Member]      
Investment [Line Items]      
COLI Investment Income 5.8scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember		 6.0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember		 5.8scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember
Investment Income [Member]      
Investment [Line Items]      
COLI Investment Income 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember		 (1.8)scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember		 3.0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember
Variable Life [Member]      
Investment [Line Items]      
Company-owned life insurance (COLI) 41.4us-gaap_CashSurrenderValueOfLifeInsurance
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 40.0us-gaap_CashSurrenderValueOfLifeInsurance
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		  
COLI Investment Income 1.6scs_ColiIncome
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 (0.9)scs_ColiIncome
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 3.0scs_ColiIncome
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember
Variable Life [Member] | Cost of Sales [Member]      
Investment [Line Items]      
COLI Investment Income 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember
Variable Life [Member] | Operating Expense [Member]      
Investment [Line Items]      
COLI Investment Income 1.6scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 0.9scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember
Variable Life [Member] | Operating Income [Member]      
Investment [Line Items]      
COLI Investment Income 1.6scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 0.9scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember
Variable Life [Member] | Investment Income [Member]      
Investment [Line Items]      
COLI Investment Income 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 (1.8)scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember		 3.0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember
/ us-gaap_InvestmentTypeAxis
= us-gaap_VariableLifeMember
Whole Life [Member]      
Investment [Line Items]      
Company-owned life insurance (COLI) 118.1us-gaap_CashSurrenderValueOfLifeInsurance
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 114.3us-gaap_CashSurrenderValueOfLifeInsurance
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		  
COLI Investment Income 4.2scs_ColiIncome
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 5.1scs_ColiIncome
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 5.8scs_ColiIncome
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember
Whole Life [Member] | Cost of Sales [Member]      
Investment [Line Items]      
COLI Investment Income 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 0.6scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 1.2scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember
Whole Life [Member] | Operating Expense [Member]      
Investment [Line Items]      
COLI Investment Income 4.2scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 4.5scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 4.6scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OperatingExpenseMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember
Whole Life [Member] | Operating Income [Member]      
Investment [Line Items]      
COLI Investment Income 4.2scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 5.1scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 5.8scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= scs_OperatingIncomeMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember
Whole Life [Member] | Investment Income [Member]      
Investment [Line Items]      
COLI Investment Income $ 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 $ 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember		 $ 0scs_ColiIncome
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InvestmentIncomeMember
/ us-gaap_InvestmentTypeAxis
= scs_WholeLifeMember