Segments (Schedule Of Financial Information By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025		Sep. 30, 2024
Segment Reporting Information [Line Items]
Net interest income	$ 279,457	$ 262,351	$ 828,706		$ 773,599
Provision for credit losses	(20,061)	(9,140)	(40,145)		(19,395)
Non-interest income	161,511	159,025	486,073		460,117
INVESTMENT SECURITIES GAINS (LOSSES), NET	7,885	3,872	731	[1]	6,846	[1]
Non-interest expense	(244,018)	(237,600)	(726,831)		(715,511)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	184,774	178,508	548,534		505,656
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Net interest income	(2,258)	(15,772)	(11,434)		(57,545)
Provision for credit losses	(9,732)	426	(9,339)		8,858
Non-interest income	1,639	6,380	5,645		10,184
INVESTMENT SECURITIES GAINS (LOSSES), NET	7,885	3,872	731		6,846
Non-interest expense	(9,677)	(9,806)	(32,249)		(47,206)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(12,143)	(14,900)	(46,646)		(78,863)
Consumer segment | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	126,606	128,904	378,958		384,278
Provision for credit losses	(9,422)	(9,526)	(29,241)		(27,451)
Non-interest income	25,364	25,517	73,055		74,424
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0	0		0
Non-interest expense	(84,886)	(85,121)	(250,968)		(245,834)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	57,662	59,774	171,804		185,417
Commercial segment | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	132,575	128,253	393,453		380,476
Provision for credit losses	(908)	(186)	(1,548)		(952)
Non-interest income	66,408	65,287	211,388		195,669
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0	0		0
Non-interest expense	(107,201)	(102,614)	(319,258)		(303,959)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	90,874	90,740	284,035		271,234
Wealth segment | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	22,534	20,966	67,729		66,390
Provision for credit losses	1	146	(17)		150
Non-interest income	68,100	61,841	195,985		179,840
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0	0		0
Non-interest expense	(42,254)	(40,059)	(124,356)		(118,512)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 48,381	$ 42,894	$ 139,341		$ 127,868

[1] Available for sale debt securities, equity securities, and other securities.