| Line | 
           Label | 
           Object Class | 
           Period Type | 
           Balance | 
           Report Element Name | 
        
        
           | 1 | 
           11-Statement of Financial Position | 
           Network | 
           *  | 
           *  | 
           http://xbrlsite.com/seattlemethod/sfac6/role/BalanceSheet | 
        
        
           | 2 | 
           Balance Sheet [Hypercube] | 
           Table | 
            | 
            | 
           sfac6:BalanceSheetHypercube | 
        
        
           | 3 | 
           Balance Sheet [Line Items] | 
           LineItems | 
            | 
            | 
           sfac6:BalanceSheetLineItems | 
        
        
           | 4 | 
           Balance Sheet [Arithmetic] | 
           Abstract | 
            | 
            | 
           sfac6:BalanceSheetArithmetic | 
        
        
           | 5 | 
           Assets | 
           Concept (Monetary) | 
           As Of | 
           Debit | 
           sfac6:Assets | 
        
        
           | 6 | 
           Liabilities | 
           Concept (Monetary) | 
           As Of | 
           Credit | 
           sfac6:Liabilities | 
        
        
           | 7 | 
           Equity | 
           Concept (Monetary) | 
           As Of | 
           Credit | 
           sfac6:Equity | 
        
        
           | 8 | 
           21-Statement of Comprehensive Income | 
           Network | 
           *  | 
           *  | 
           http://xbrlsite.com/seattlemethod/sfac6/role/ComprehensiveIncome | 
        
        
           | 9 | 
           Comprehensive Income Statement [Hypercube] | 
           Table | 
            | 
            | 
           sfac6:ComprehensiveIncomeStatementHypercube | 
        
        
           | 10 | 
           Comprehensive Income Statement [Line Items] | 
           LineItems | 
            | 
            | 
           sfac6:ComprehensiveIncomeStatementLineItems | 
        
        
           | 11 | 
           Comprehensive Income [Roll Up] | 
           Abstract | 
            | 
            | 
           sfac6:ComprehensiveIncomeRollUp | 
        
        
           | 12 | 
           Revenues | 
           Concept (Monetary) | 
           For Period | 
           Credit | 
           sfac6:Revenues | 
        
        
           | 13 | 
           (Expenses) | 
           Concept (Monetary) | 
           For Period | 
           Debit | 
           sfac6:Expenses | 
        
        
           | 14 | 
           Gains | 
           Concept (Monetary) | 
           For Period | 
           Credit | 
           sfac6:Gains | 
        
        
           | 15 | 
           (Losses) | 
           Concept (Monetary) | 
           For Period | 
           Debit | 
           sfac6:Losses | 
        
        
           | 16 | 
           Comprehensive Income | 
           Concept (Monetary) | 
           For Period | 
           Credit | 
           sfac6:ComprehensiveIncome | 
        
        
           | 17 | 
           31-Statement of Changes in Equity | 
           Network | 
           *  | 
           *  | 
           http://xbrlsite.com/seattlemethod/sfac6/role/ChangesInEquity | 
        
        
           | 18 | 
           Changes in Equity [Hypercube] | 
           Table | 
            | 
            | 
           sfac6:ChangesInEquityHypercube | 
        
        
           | 19 | 
           Changes in Equity [Line Items] | 
           LineItems | 
            | 
            | 
           sfac6:ChangesInEquityLineItems | 
        
        
           | 20 | 
           Changes in Equity [Roll Forward] | 
           Abstract | 
            | 
            | 
           sfac6:ChangesInEquityRollForward | 
        
        
           | 21 | 
           Equity, Beginning Balance | 
           Concept (Monetary) | 
           As Of | 
           Credit | 
           sfac6:Equity | 
        
        
           | 22 | 
           Comprehensive Income | 
           Concept (Monetary) | 
           For Period | 
           Credit | 
           sfac6:ComprehensiveIncome | 
        
        
           | 23 | 
           Investments by Owners | 
           Concept (Monetary) | 
           For Period | 
           Credit | 
           sfac6:InvestmentsByOwners | 
        
        
           | 24 | 
           (Distributions to Owners) | 
           Concept (Monetary) | 
           For Period | 
           Debit | 
           sfac6:DistributionsToOwners | 
        
        
           | 25 | 
           Equity, Ending Balance | 
           Concept (Monetary) | 
           As Of | 
           Credit | 
           sfac6:Equity |