Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities (Variable Interest Entities) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investments in Tax Credit and Other Investments, Net [Line Items]
Fair Value	$ 7,789,213	$ 5,544,658
Collateralized loan obligations (“CLOs”)
Investments in Tax Credit and Other Investments, Net [Line Items]
Fair Value	291,466	287,494
Collateralized loan obligations (“CLOs”) | AFS debt securities
Investments in Tax Credit and Other Investments, Net [Line Items]
Fair Value	$ 291,500	$ 287,500