Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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+ Details

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2017	Dec. 31, 2020
Income Taxes
Assets	$ 81,980,864		$ 81,980,864			$ 80,873,509
Federal statutory tax rate	21.00%	21.00%	21.00%	21.00%	35.00%
Investing and Servicing Segment \| TRS entities
Income Taxes
Assets	$ 2,500,000		$ 2,500,000			$ 1,400,000