Segments (Schedule Of Financial Information By Segment) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net interest income		$ 208,786	$ 205,748
Provision for credit losses		9,858	6,232
Non-interest income		131,769	136,045
INVESTMENT SECURITIES GAINS, NET	[1]	7,163	9,853
Non-interest expense		(205,648)	(192,573)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		151,928	165,305
Consumer segment
Segment Reporting Information [Line Items]
Net interest income		79,896	77,939
Provision for credit losses		(4,498)	(9,901)
Non-interest income		28,354	38,248
INVESTMENT SECURITIES GAINS, NET		0	0
Non-interest expense		(72,994)	(70,369)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		30,758	35,917
Commercial segment
Segment Reporting Information [Line Items]
Net interest income		109,530	110,565
Provision for credit losses		(82)	(27)
Non-interest income		53,651	50,728
INVESTMENT SECURITIES GAINS, NET		0	0
Non-interest expense		(89,524)	(79,281)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		73,575	81,985
Wealth segment
Segment Reporting Information [Line Items]
Net interest income		18,868	17,457
Provision for credit losses		(26)	5
Non-interest income		53,206	50,985
INVESTMENT SECURITIES GAINS, NET		0	0
Non-interest expense		(36,286)	(33,043)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		35,762	35,404
Segment Totals
Segment Reporting Information [Line Items]
Net interest income		208,294	205,961
Provision for credit losses		(4,606)	(9,923)
Non-interest income		135,211	139,961
INVESTMENT SECURITIES GAINS, NET		0	0
Non-interest expense		(198,804)	(182,693)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		140,095	153,306
Other/Elimination
Segment Reporting Information [Line Items]
Net interest income		492	(213)
Provision for credit losses		14,464	16,155
Non-interest income		(3,442)	(3,916)
INVESTMENT SECURITIES GAINS, NET		7,163	9,853
Non-interest expense		(6,844)	(9,880)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		$ 11,833	$ 11,999

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