Segments (Schedule Of Financial Information By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Segment Reporting Information [Line Items]
Net interest income	$ 299,840	$ 269,102
Provision for credit losses	(10,960)	(14,487)
Non-interest income	175,851	158,949
INVESTMENT SECURITIES GAINS (LOSSES), NET	11,647	(7,591)
Non-interest expense	(291,126)	(238,376)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	185,252	167,597
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Net interest income	(2,456)	(11,557)
Provision for credit losses	4,005	(3,705)
Non-interest income	2,602	1,325
INVESTMENT SECURITIES GAINS (LOSSES), NET	11,647	(7,591)
Non-interest expense	(27,309)	(10,213)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(11,511)	(31,741)
Retail banking segment | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	122,572	125,234
Provision for credit losses	(9,271)	(10,250)
Non-interest income	24,093	23,260
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0
Non-interest expense	(87,873)	(83,005)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	49,521	55,239
Commercial segment | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	133,601	133,266
Provision for credit losses	(5,696)	(532)
Non-interest income	68,936	70,326
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0
Non-interest expense	(112,827)	(103,969)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	84,014	99,091
Wealth segment | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	46,123	22,159
Provision for credit losses	2	0
Non-interest income	80,220	64,038
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0
Non-interest expense	(63,117)	(41,189)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 63,228	$ 45,008