Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity Securities without Readily Determinable Fair Value, Amount	$ 19,000	$ 14,000
Write-up of equity securities without readily determinable fair values	5,690	0	$ 0
Servicing Asset at Amortized Cost, Fair Value		57,259	41,990
Change in MSRs valuation(a)	(22,264)	(16,186)	$ 17,704
Possible liquidity issues [Member]
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Financing Receivable, Troubled Debt Restructuring	0	7,000
Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Loans Receivable, Fair Value Disclosure	27,481,426	23,980,330
Equity Securities without Readily Determinable Fair Value, Amount	19,225	13,542
Write-up of equity securities without readily determinable fair values	5,690
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 2
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Write-down or Reserve, Amount	971	7,345
OREO(c)	2,196	21,299
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Loans Receivable, Fair Value Disclosure	23,584	69,917
Provision for credit losses	4,405	(3,045)
Equity Securities without Readily Determinable Fair Value, Amount	19,134
Write-up of equity securities without readily determinable fair values	$ 5,690
Servicing Asset at Amortized Cost, Fair Value		57,259
Change in MSRs valuation(a)		$ 16,186