Fair Value Measurements - Change in FV (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Fair Value Option
Net Gains (Losses)	$ 97,543	$ 199,625	$ 208,437	$ 466,705
Other Noninterest Income	32,593	27,560	39,214	68,901
Transfers of assets from level 1 to level 2	0	0	0	0
Transfers of assets from level 2 to level 1	0	0	0	0
Transfers of liabilities from level 1 to level 2	0	0	0	0
Transfers of liabilities from level 2 to level 1	0	0	0	0
Loans Held for Sale
Fair Value Option
Net Gains (Losses)	14,862	45,439	(35,994)	(22,517)
Total Changes in Fair Value	14,862	45,439	(35,994)	(22,517)
Loans Held For Investment
Fair Value Option
Net Gains (Losses)	(283)		(283)
Total Changes in Fair Value	(283)		(283)
MSR asset
Fair Value Option
Net Gains (Losses)	10,003	(1,593)	18,064	15,273
Total Changes in Fair Value	$ 10,003	$ (1,593)	$ 18,064	$ 15,273

Represents the amount of fair value Level 1 assets transferred to Level 2.

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Represents the amount of fair value Level 2 assets transferred to Level 1.

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Represents the amount of fair value Level 1 liabilities transferred to Level 2.

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Represents the amount of fair value Level 2 liabilities transferred to Level 1.

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123596393&loc=d3e14172-108612

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(h))
-URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

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Represents the total of noninterest income derived from certain activities and assets including (for example): (1) venture capital investments; (2) bank owned life insurance; (3) foreign currency transactions; and (4) mortgage servicing rights.

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