Consolidated Statement of Income - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
INTEREST AND DIVIDEND INCOME
Loans receivable, including fees	$ 1,424,900,000	$ 1,464,382,000	$ 1,717,415,000
AFS debt securities	143,983,000	82,553,000	67,838,000
Resale agreements	32,239,000	21,389,000	28,061,000
Restricted equity securities	2,081,000	1,543,000	2,468,000
Interest-bearing cash and deposits with banks	15,531,000	25,175,000	66,518,000
Total interest and dividend income	1,618,734,000	1,595,042,000	1,882,300,000
INTEREST EXPENSE
Deposits	69,159,000	184,742,000	375,802,000
Short-term borrowings	42,000	1,504,000	1,763,000
FHLB advances	6,881,000	13,792,000	16,697,000
Repurchase agreements	7,999,000	11,766,000	13,582,000
Long-term debt and finance lease liabilities	3,082,000	6,045,000	6,643,000
Total interest expense	87,163,000	217,849,000	414,487,000
Net interest income before (reversal of) provision for credit losses	1,531,571,000	1,377,193,000	1,467,813,000
(Reversal of) provision for credit losses	(35,000,000)	210,653,000	98,685,000
Net interest income after (reversal of) provision for credit losses	1,566,571,000	1,166,540,000	1,369,128,000
NONINTEREST INCOME
Lending fees	77,704,000	74,842,000	63,670,000
Deposit account fees	71,261,000	48,148,000	38,648,000
Interest rate contracts and other derivative income	22,913,000	31,685,000	39,865,000
Foreign exchange income	48,977,000	22,370,000	26,398,000
Wealth management fees	25,751,000	17,494,000	16,547,000
Net gains on sales of loans	8,909,000	4,501,000	4,035,000
Net gains on sales of AFS debt securities	1,568,000	12,299,000	3,930,000
Other investment income	16,852,000	10,641,000	18,117,000
Other income	11,960,000	13,567,000	11,035,000
Total noninterest income	285,895,000	235,547,000	222,245,000
NONINTEREST EXPENSE
Compensation and employee benefits	433,728,000	404,071,000	401,700,000
Occupancy and equipment expense	62,996,000	66,489,000	69,730,000
Deposit insurance premiums and regulatory assessments	17,563,000	15,128,000	12,928,000
Deposit account expense	16,152,000	13,530,000	14,175,000
Data processing	16,263,000	16,603,000	13,533,000
Computer software expense	30,600,000	29,033,000	26,471,000
Consulting expense	6,517,000	5,391,000	9,846,000
Legal expense	8,015,000	7,766,000	8,441,000
Other operating expense	81,798,000	79,489,000	92,249,000
Amortization of tax credit and other investments	122,457,000	70,082,000	98,383,000
Repurchase agreements’ extinguishment cost	0	8,740,000	0
Total noninterest expense	796,089,000	716,322,000	747,456,000
INCOME BEFORE INCOME TAXES	1,056,377,000	685,765,000	843,917,000
INCOME TAX EXPENSE	183,396,000	117,968,000	169,882,000
NET INCOME	$ 872,981,000	$ 567,797,000	$ 674,035,000
EARNINGS PER SHARE (“EPS”)
BASIC (in dollars per share)	$ 6.16	$ 3.99	$ 4.63
DILUTED (in dollars per share)	$ 6.10	$ 3.97	$ 4.61
WEIGHTED-AVERAGE NUMBER OF SHARES OUTSTANDING
BASIC (in shares)	141,826	142,336	145,497
DILUTED (in shares)	143,140	142,991	146,179