Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net income	$ 882,012	$ 1,436,083
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	725,000	122,000
Depreciation and amortization of premises and equipment	164,323	155,721
Amortization of capitalized servicing rights	63,992	53,137
Amortization of core deposit and other intangible assets	11,740	15,185
Provision for deferred income taxes	(119,913)	16,683
Asset write-downs	17,692	53,850
Net gain on sales of assets	(14,736)	(13,938)
Net change in accrued interest receivable, payable	(135,825)	8,771
Net change in other accrued income and expense	(344,085)	(75,564)
Net change in loans originated for sale	(422,773)	(20,325)
Net change in trading account assets and liabilities	(702,362)	(524,755)
Net cash provided by operating activities	125,065	1,226,848
Cash flows from investing activities
Proceeds from sales of investment securities equity and other	55,499	878,405
Proceeds from maturities of investment securities Available for sale	1,149,281	1,932,168
Proceeds from maturities of investment securities Held to maturity	719,379	787,655
Purchases of investment securities Available for sale	(5,860)	(9,791)
Purchases of investment securities Held to maturity	(8,995)	(495,277)
Purchases of investment securities equity and other	(26,955)	(821,120)
Net increase in loans and leases	(7,227,304)	(1,484,135)
Net increase in interest-bearing deposits at banks	(13,007,783)	(4,390,327)
Capital expenditures, net	(125,370)	(119,522)
Net (increase) decrease in loan servicing advances	149,838	(333,079)
Other, net	351,278	55,356
Net cash used by investing activities	(17,976,992)	(3,999,667)
Cash flows from financing activities
Net increase in deposits	20,394,732	4,959,327
Net increase (decrease) in short-term borrowings	(16,240)	1,115,518
Payments on long-term borrowings	(1,605,041)	(1,552,533)
Purchases of treasury stock	(373,750)	(1,067,575)
Dividends paid — common	(426,204)	(406,967)
Dividends paid — preferred	(55,444)	(54,642)
Redemption of Series A and Series C preferred stock		(381,500)
Other, net	(13,199)	(21,187)
Net cash provided by financing activities	17,904,854	2,986,441
Net increase in cash, cash equivalents and restricted cash	52,927	213,622
Cash, cash equivalents and restricted cash at beginning of period	1,436,305	1,605,439
Cash, cash equivalents and restricted cash at end of period	1,489,232	1,819,061
Supplemental disclosure of cash flow information
Interest received during the period	3,121,917	3,700,206
Interest paid during the period	319,079	577,291
Income taxes paid during the period	254,471	302,441
Supplemental schedule of noncash investing and financing activities
Real estate acquired in settlement of loans	20,047	66,018
Securitization of residential mortgage loans allocated to Available-for-sale investment securities		5,379
Securitization of residential mortgage loans allocated to capitalized servicing rights		83
Adoption of lease accounting standard - Right-of-use assets		393,877
Adoption of lease accounting standard - Other liabilities		398,810
Additions to right-of-use assets under operating leases	$ 45,888	69,305
Series G Preferred Stock [Member]
Cash flows from financing activities
Proceeds from issuance of Series G preferred stock		$ 396,000