Borrowings - Summary of FHLB Advances (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Total Outstanding
Maturing within 1 year	$ 3,330,000	$ 2,100,000
After 1 but within 2 years	0	0
After 2 but within 3 years	417	218
After 3 but within 4 years	0	215
After 4 but within 5 years	629	642
After 5 years	8,868	9,033
Total FHLB advances	$ 3,339,914	$ 2,110,108
Weighted- Average Contractual Coupon Rate
Maturing within 1 year	4.49%	4.50%
After 1 but within 2 years	0.00%	0.00%
After 2 but within 3 years	1.37%	0.00%
After 3 but within 4 years	0.00%	2.75%
After 4 but within 5 years	1.75%	1.75%
After 5 years	2.02%	2.02%
Total FHLB advances	4.48%	4.49%
Aggregate market value of assets pledged as collateral	$ 16,530,103	$ 16,581,133
Remaining borrowing capacity at FHLB	$ 7,557,549	$ 8,670,348