Financial Derivatives - Schedule of Derivative Instruments in Statement of Financial Position (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Notional Disclosures [Abstract]
Notional Amount	$ 25,020,668	$ 23,878,611
Asset
Financial derivatives	25,099	37,409
Gross Amounts offset in the Consolidated Balance Sheet	(9,800)	(5,212)
(Liability)
Derivative liability	(166,963)	(175,326)
Gross Amounts offset in the Consolidated Balance Sheet	9,800	5,212
Designated as hedge | Fair value hedges: | Receive fixed non-callable
Notional Disclosures [Abstract]
Notional Amount	10,227,735	8,149,871
Asset
Financial derivatives	9,431	13,689
(Liability)
Derivative liability	$ (48)	$ (366)
Weighted- Average Pay Rate	4.86%	2.23%
Weighted- Average Receive Rate	2.28%	4.33%
Weighted- Average Remaining Term (in years)	1 year 6 months 25 days	10 years 9 months 3 days
Designated as hedge | Fair value hedges: | Pay fixed non-callable
Notional Disclosures [Abstract]
Notional Amount	$ 8,344,447	$ 10,033,750
Asset
Financial derivatives	48	19
(Liability)
Derivative liability	$ (31,690)	$ (4,686)
Weighted- Average Pay Rate	2.25%	4.31%
Weighted- Average Receive Rate	4.84%	2.03%
Weighted- Average Remaining Term (in years)	10 years 7 months 24 days	1 year 7 months 20 days
Designated as hedge | Fair value hedges: | Receive fixed callable
Notional Disclosures [Abstract]
Notional Amount	$ 3,065,577	$ 2,764,577
Asset
Financial derivatives	1,380	461
(Liability)
Derivative liability	$ (142,980)	$ (174,757)
Weighted- Average Pay Rate	4.75%	4.21%
Weighted- Average Receive Rate	2.28%	1.98%
Weighted- Average Remaining Term (in years)	2 years 10 months 6 days	3 years 2 months 4 days
Designated as hedge | Cash flow hedges: | Pay fixed non-callable
Notional Disclosures [Abstract]
Notional Amount	$ 575,000	$ 588,000
Asset
Financial derivatives	22,436	27,275
(Liability)
Derivative liability	$ (1,078)	$ 0
Weighted- Average Pay Rate	1.93%	1.93%
Weighted- Average Receive Rate	5.23%	4.72%
Weighted- Average Remaining Term (in years)	4 years 10 months 28 days	5 years 18 days
No hedge designation | Receive fixed non-callable
Notional Disclosures [Abstract]
Notional Amount	$ 763,753	$ 287,750
Asset
Financial derivatives	298	0
(Liability)
Derivative liability	$ (10)	$ (130)
Weighted- Average Pay Rate	4.87%	4.31%
Weighted- Average Receive Rate	3.40%	1.16%
Weighted- Average Remaining Term (in years)	8 months 8 days	1 year 9 months 3 days
No hedge designation | Pay fixed non-callable
Notional Disclosures [Abstract]
Notional Amount	$ 182,072	$ 187,479
Asset
Financial derivatives	578	1,065
(Liability)
Derivative liability	$ (460)	$ (1)
Weighted- Average Pay Rate	3.00%	3.05%
Weighted- Average Receive Rate	4.82%	4.09%
Weighted- Average Remaining Term (in years)	4 years 4 months 20 days	4 years 6 months 7 days
No hedge designation | Receive fixed callable
Notional Disclosures [Abstract]
Notional Amount	$ 1,845,384
Asset
Financial derivatives	114
(Liability)
Derivative liability	$ (497)
Weighted- Average Pay Rate	4.82%
Weighted- Average Receive Rate	4.89%
Weighted- Average Remaining Term (in years)	2 years 2 months 26 days
No hedge designation | Basis swaps
Notional Disclosures [Abstract]
Notional Amount	$ 16,700	$ 1,860,384
Asset
Financial derivatives	614	112
(Liability)
Derivative liability	0	$ (456)
Weighted- Average Pay Rate		4.40%
Weighted- Average Receive Rate		4.42%
Weighted- Average Remaining Term (in years)		2 years 5 months 15 days
No hedge designation | Treasury futures
Notional Disclosures [Abstract]
Notional Amount		$ 6,800
Asset
Financial derivatives		0
Gross Amounts offset in the Consolidated Balance Sheet	(9,800)	(5,212)
(Liability)
Derivative liability		(142)
Gross Amounts offset in the Consolidated Balance Sheet	$ 9,800	$ 5,212
Weighted- Average Forward Price (in dollars per share)	$ 111.25	$ 114.38