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Financial Assets and Liabilities - SBI Investment (Details) - SBI
12 Months Ended
Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Discount rate applied to cash flow forecasts to determine initial fair value of equity method investment. 15.00%
Market approach average price/earnings multiples of comparable companies to corroborate the income approach 12.6
Time period of projected income to determine fair value of equity method investment 5 years