Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Debt Securities, Available-for-sale [Abstract] | ||||
| Proceeds from sales of available-for-sale securities | $ 0 | $ 6,111,897 | $ 16,969,870 | $ 14,065,573 |
| Amortized cost of available-for-sale securities sold | 0 | (5,861,630) | (17,947,686) | (13,809,174) |
| Gross realized gains | 0 | 254,655 | 280,885 | 380,808 |
| Gross realized losses | 0 | (4,388) | (1,258,701) | (124,409) |
| Total realized gains (losses) on sales, net | $ 0 | $ 250,267 | $ (977,816) | $ 256,399 |
| X | ||||||||||
- 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.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- 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
|
| 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/2009/role/commonPracticeRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|