CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022
OPERATING ACTIVITIES
Net income		$ 1,419	$ 1,420
Adjustments to reconcile net income to net change in cash due to operating activities:
Provision (benefit) for credit losses		516	342
Net change in loans held for sale, at fair value		25	1,404
Depreciation, amortization and accretion		352	448
Deferred income tax expense (benefit)		(61)	124
Share-based compensation		73	68
Net gain on sales of assets		(19)	(5)
Net (increase) decrease in other assets		(732)	(1,700)
Net increase (decrease) in other liabilities		718	577
Net change due to operating activities		2,291	2,678
Investment securities:
Purchases of debt securities available for sale		(5,576)	(9,772)
Proceeds from maturities and paydowns of debt securities available for sale		1,481	2,843
Proceeds from sales of debt securities available for sale		2,429	1,057
Proceeds from maturities and paydowns of debt securities held to maturity		597	772
Net (increase) decrease in interest-bearing deposits in banks		(21)	55
Acquisitions, net of cash acquired	[1]	0	(235)
Purchases of loans		0	(1,007)
Sales of loans		2,628	1,718
Net (increase) decrease in loans and leases		3,790	(6,937)
Capital expenditures, net		(124)	(141)
Purchase of bank-owned life insurance		0	(100)
Other		(181)	(732)
Net change due to investing activities		5,023	(12,479)
FINANCING ACTIVITIES
Net increase (decrease) in deposits		(2,527)	3,988
Net increase (decrease) in short-term borrowed funds		229	174
Proceeds from issuance of long-term borrowed funds		21,233	11,516
Repayments of long-term borrowed funds		(19,766)	(6,190)
Treasury stock purchased		(906)	(2)
Dividends paid to common stockholders		(609)	(569)
Dividends paid to preferred stockholders		(89)	(90)
Payments of employee tax withholding for share-based compensation		(26)	(24)
Net change due to financing activities		(2,461)	8,803
Net change in cash and cash equivalents	[2]	4,853	(998)
Cash and cash equivalents at beginning of period	[2]	10,547	9,158
Cash and cash equivalents at end of period	[2]	15,400	8,160
Non-cash items:
Transfer of loans from portfolio to LHFS		2,582	0
Transfer of securities from available for sale to held to maturity		0	8,563
Investors Acquisition:
Fair value of assets acquired, excluding cash and cash equivalents		0	27,102
Goodwill and other intangible assets		0	996
Fair value of liabilities assumed		0	24,975
Common stock issued		0	3,035
Replacement equity awards		$ 0	$ 19

[1] Primarily includes cash paid of $355 million to acquire Investors less $287 million in cash acquired, and $143 million and $23 million of cash paid for the HSBC transaction and acquisition of DH Capital, respectively, for the nine months ended September 30, 2022.

[2] Cash and cash equivalents include cash and due from banks and interest-bearing cash and due from banks as reflected on the Consolidated Balance Sheets.