Segments (Schedule Of Financial Information By Segment) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Net interest income		$ 251,623	$ 208,786
Provision for credit losses		(11,456)	9,858
Non-interest income		137,612	131,769
INVESTMENT SECURITIES GAINS (LOSSES), NET	[1]	(306)	7,163
Non-interest expense		(224,107)	(205,648)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		153,366	151,928
Consumer segment
Segment Reporting Information [Line Items]
Net interest income		96,854	86,818
Provision for credit losses		(6,306)	(4,504)
Non-interest income		24,303	26,415
INVESTMENT SECURITIES GAINS (LOSSES), NET		0	0
Non-interest expense		(77,326)	(74,823)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		37,525	33,906
Commercial segment
Segment Reporting Information [Line Items]
Net interest income		116,166	108,953
Provision for credit losses		(393)	(82)
Non-interest income		58,324	53,651
INVESTMENT SECURITIES GAINS (LOSSES), NET		0	0
Non-interest expense		(93,623)	(89,506)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		80,474	73,016
Wealth segment
Segment Reporting Information [Line Items]
Net interest income		17,540	18,869
Provision for credit losses		(13)	(26)
Non-interest income		52,944	53,206
INVESTMENT SECURITIES GAINS (LOSSES), NET		0	0
Non-interest expense		(39,636)	(36,288)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		30,835	35,761
Segment Totals
Segment Reporting Information [Line Items]
Net interest income		230,560	214,640
Provision for credit losses		(6,712)	(4,612)
Non-interest income		135,571	133,272
INVESTMENT SECURITIES GAINS (LOSSES), NET		0	0
Non-interest expense		(210,585)	(200,617)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		148,834	142,683
Other/Elimination
Segment Reporting Information [Line Items]
Net interest income		21,063	(5,854)
Provision for credit losses		(4,744)	14,470
Non-interest income		2,041	(1,503)
INVESTMENT SECURITIES GAINS (LOSSES), NET		(306)	7,163
Non-interest expense		(13,522)	(5,031)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		$ 4,532	$ 9,245

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