Segments (Schedule Of Financial Information By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022		Jun. 30, 2021
Segment Reporting Information [Line Items]
Net interest income	$ 232,385	$ 207,982	$ 441,171		$ 413,730
Provision for credit losses	(7,162)	45,655	2,696		51,887
Non-interest income	139,427	139,143	271,196		275,188
INVESTMENT SECURITIES GAINS, NET	1,029	16,804	8,192	[1]	26,657	[1]
Non-interest expense	(213,505)	(198,126)	(419,153)		(390,699)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	152,174	211,458	304,102		376,763
Consumer segment
Segment Reporting Information [Line Items]
Net interest income	83,633	80,807	163,529		158,746
Provision for credit losses	(3,924)	(5,664)	(8,422)		(15,565)
Non-interest income	30,924	36,905	59,278		75,153
INVESTMENT SECURITIES GAINS, NET	0	0	0		0
Non-interest expense	(75,406)	(73,915)	(148,400)		(144,284)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	35,227	38,133	65,985		74,050
Commercial segment
Segment Reporting Information [Line Items]
Net interest income	109,646	114,185	219,176		224,750
Provision for credit losses	(63)	4,952	(145)		4,925
Non-interest income	56,815	52,259	110,466		102,987
INVESTMENT SECURITIES GAINS, NET	0	0	0		0
Non-interest expense	(91,328)	(82,619)	(180,852)		(161,900)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	75,070	88,777	148,645		170,762
Wealth segment
Segment Reporting Information [Line Items]
Net interest income	19,226	17,654	38,094		35,111
Provision for credit losses	23	(4)	(3)		1
Non-interest income	53,983	52,505	107,189		103,490
INVESTMENT SECURITIES GAINS, NET	0	0	0		0
Non-interest expense	(36,487)	(34,049)	(72,773)		(67,092)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	36,745	36,106	72,507		71,510
Segment Totals
Segment Reporting Information [Line Items]
Net interest income	212,505	212,646	420,799		418,607
Provision for credit losses	(3,964)	(716)	(8,570)		(10,639)
Non-interest income	141,722	141,669	276,933		281,630
INVESTMENT SECURITIES GAINS, NET	0	0	0		0
Non-interest expense	(203,221)	(190,583)	(402,025)		(373,276)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	147,042	163,016	287,137		316,322
Other/Elimination
Segment Reporting Information [Line Items]
Net interest income	19,880	(4,664)	20,372		(4,877)
Provision for credit losses	(3,198)	46,371	11,266		62,526
Non-interest income	(2,295)	(2,526)	(5,737)		(6,442)
INVESTMENT SECURITIES GAINS, NET	1,029	16,804	8,192		26,657
Non-interest expense	(10,284)	(7,543)	(17,128)		(17,423)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 5,132	$ 48,442	$ 16,965		$ 60,441

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