Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Debt Securities, Available-for-sale [Abstract] | |||
| Proceeds from sales of available-for-sale securities | $ 15,202,406 | $ 8,708,941 | $ 14,404,458 |
| Amortized cost of available-for-sale securities sold | 15,600,000 | 8,700,000 | 14,500,000 |
| Gross realized gains | 70,076 | 67,764 | 97,049 |
| Gross realized losses | (419,638) | (100,255) | (223,277) |
| Total realized losses on sales, net | $ (349,562) | $ (32,491) | $ (126,228) |
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- Definition The total amount of amortized cost of securities, categorized neither as held-to-maturity nor trading securities, sold during the reporting period. No definition available.
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- References No definition available.
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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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