Segments (Schedule Of Financial Information By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023		Jun. 30, 2022
Segment Reporting Information [Line Items]
Net interest income	$ 249,538	$ 232,385	$ 501,161		$ 441,171
Provision for credit losses	(6,471)	(7,162)	(17,927)		2,696
Non-interest income	147,605	139,427	285,217		271,196
INVESTMENT SECURITIES GAINS (LOSSES), NET	3,392	1,029	3,086	[1]	8,192	[1]
Non-interest expense	(227,611)	(213,505)	(451,718)		(419,153)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	166,453	152,174	319,819		304,102
Consumer segment
Segment Reporting Information [Line Items]
Net interest income	101,552	90,561	198,406		177,379
Provision for credit losses	(6,430)	(3,910)	(12,736)		(8,413)
Non-interest income	25,531	28,340	49,834		54,755
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0	0		0
Non-interest expense	(83,431)	(77,629)	(160,757)		(152,453)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	37,222	37,362	74,747		71,268
Commercial segment
Segment Reporting Information [Line Items]
Net interest income	116,462	110,182	232,628		219,135
Provision for credit losses	(90)	(63)	(483)		(145)
Non-interest income	64,769	56,815	123,093		110,466
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0	0		0
Non-interest expense	(98,427)	(91,316)	(192,050)		(180,822)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	82,714	75,618	163,188		148,634
Wealth segment
Segment Reporting Information [Line Items]
Net interest income	17,024	19,222	34,564		38,091
Provision for credit losses	0	23	(13)		(3)
Non-interest income	54,513	53,983	107,457		107,189
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0	0		0
Non-interest expense	(40,472)	(36,491)	(80,108)		(72,779)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	31,065	36,737	61,900		72,498
Segment Totals
Segment Reporting Information [Line Items]
Net interest income	235,038	219,965	465,598		434,605
Provision for credit losses	(6,520)	(3,950)	(13,232)		(8,561)
Non-interest income	144,813	139,138	280,384		272,410
INVESTMENT SECURITIES GAINS (LOSSES), NET	0	0	0		0
Non-interest expense	(222,330)	(205,436)	(432,915)		(406,054)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	151,001	149,717	299,835		292,400
Other/Elimination
Segment Reporting Information [Line Items]
Net interest income	14,500	12,420	35,563		6,566
Provision for credit losses	49	(3,212)	(4,695)		11,257
Non-interest income	2,792	289	4,833		(1,214)
INVESTMENT SECURITIES GAINS (LOSSES), NET	3,392	1,029	3,086		8,192
Non-interest expense	(5,281)	(8,069)	(18,803)		(13,099)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 15,452	$ 2,457	$ 19,984		$ 11,702

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