Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) $ in Thousands	Dec. 31, 2022 USD ($) Security	Dec. 31, 2021 USD ($) Security
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 166,715	$ 158,647
Derivative Liability, Fair Value, Gross Liability	$ (296,766)	$ (86,327)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	719	89
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 2,108,595	$ 917,933
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (256,382)	$ (13,925)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	63	119
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 477,373	$ 91,336
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(89,665)	(2,331)
Debt Securities, Available-for-sale, Unrealized Loss Position	2,585,968	1,009,269
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (346,047)	$ (16,256)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	127	50
Estimated Fair Value, Less Than 12 Months	$ 504,922	$ 762,923
Unrealized Losses, Less Than 12 Months	$ (38,304)	$ (25,539)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	53	0
Estimated Fair Value, 12 Months or Longer	$ 620,127	$ 0
Unrealized Losses, 12 Months or Longer	(157,903)	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	1,125,049	762,923
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (196,207)	$ (25,539)
U.S. Government securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	1	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 96,906	$ 127,618
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (2,814)	$ (213)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	2	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 121,579	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(4,841)	0
Debt Securities, Available-for-sale, Unrealized Loss Position	218,485	127,618
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (7,655)	$ (213)
Residential mortgage-backed securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	81	7
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 154,861	$ 123,687
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (18,301)	$ (2,388)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	5	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 55,293	$ 16,669
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(11,546)	(648)
Debt Securities, Available-for-sale, Unrealized Loss Position	210,154	140,356
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (29,847)	$ (3,036)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	106	14
Estimated Fair Value, Less Than 12 Months	$ 246,667	$ 205,969
Unrealized Losses, Less Than 12 Months	$ (14,275)	$ (7,067)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	14	0
Estimated Fair Value, 12 Months or Longer	$ 153,178	$ 0
Unrealized Losses, 12 Months or Longer	(43,205)	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	399,845	205,969
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (57,480)	$ (7,067)
Commercial mortgage-backed securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	114	41
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 371,109	$ 512,312
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (38,845)	$ (9,534)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	20	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 181,413	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(40,237)	0
Debt Securities, Available-for-sale, Unrealized Loss Position	552,522	512,312
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (79,082)	$ (9,534)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	21	36
Estimated Fair Value, Less Than 12 Months	$ 258,255	$ 556,954
Unrealized Losses, Less Than 12 Months	$ (24,029)	$ (18,472)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security	39	0
Estimated Fair Value, 12 Months or Longer	$ 466,949	$ 0
Unrealized Losses, 12 Months or Longer	(114,698)	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	725,204	556,954
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	(138,727)	(18,472)
Interest Rate Locks with Customers
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	70,836	261,428
Derivative Liability, Notional Amount	4,939	2,549
Derivative Asset, Fair Value, Gross Asset	182	2,326
Interest Rate Locks with Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(51)	(23)
Forward Commitments
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	0	51,000
Derivative Liability, Notional Amount	10,000	0
Derivative Asset, Fair Value, Gross Asset	0	41
Forward Commitments | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(147)	0
Interest Rate Derivatives with Customers
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	171,317	3,213,924
Derivative Liability, Notional Amount	3,802,480	752,462
Derivative Asset, Fair Value, Gross Asset	3,337	153,752
Interest Rate Derivatives with Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(280,401)	(4,766)
Interest Rate Derivatives with Dealer Counterparties
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	3,802,480	752,462
Derivative Liability, Notional Amount	171,317	3,213,924
Derivative Asset, Fair Value, Gross Asset	161,956	4,766
Interest Rate Derivatives with Dealer Counterparties | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(3,703)	(79,889)
Interest Rate Derivatives used in Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	600,000	500,000
Derivative Liability, Notional Amount	1,000,000	500,000
Derivative Asset, Fair Value, Gross Asset	1,321	60
Interest Rate Derivatives used in Cash Flow Hedges | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(12,163)	(1,432)
Foreign Exchange Contracts with Customers
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	11,123	7,629
Derivative Liability, Notional Amount	3,672	3,388
Derivative Asset, Fair Value, Gross Asset	571	229
Foreign Exchange Contracts with Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(85)	(51)
Foreign Exchange Contracts with Correspondent Banks
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	4,887	3,656
Derivative Liability, Notional Amount	8,280	9,364
Derivative Asset, Fair Value, Gross Asset	101	69
Foreign Exchange Contracts with Correspondent Banks | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ (499)	$ (240)