Quarterly report pursuant to Section 13 or 15(d)

Available-for-Sale Securities, at Fair Value Nonconsolidated Variable Interest Entities (Details)

v3.20.2
Available-for-Sale Securities, at Fair Value Nonconsolidated Variable Interest Entities (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Variable Interest Entity [Line Items]    
Available-for-sale securities, at fair value $ 16,574,321 $ 31,406,328
Variable Interest Entity, Not Primary Beneficiary    
Variable Interest Entity [Line Items]    
Available-for-sale securities, at fair value 18,000 3,600,000
Maximum exposure to loss of nonconsolidated Variable Interest Entities $ 18,000 $ 3,628,300