Annual report pursuant to Section 13 and 15(d)

PARENT-ONLY FINANCIAL STATEMENTS - Cash Flow Statement (Details)

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PARENT-ONLY FINANCIAL STATEMENTS - Cash Flow Statement (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Operating activities      
Net income attributable to Huntington $ 1,940 $ 1,951 $ 2,238
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 622 798 484
Net cash provided by operating activities 1,815 2,657 4,027
Investing activities      
Sales of available-for-sale securities 990 767 0
Other, net 87 88 151
Net cash used in investing activities (12,119) (2,997) (11,609)
Financing activities      
Net proceeds from issuance of long-term debt 7,661 14,965 11,004
Payment of long-term debt (3,563) (12,376) (8,017)
Net proceeds from issuance of preferred stock 0 317 0
Repurchase/redemption of preferred stock (410) (82) 0
Other, net (56) (46) (25)
Net cash provided by financing activities 13,022 3,765 8,764
Increase in cash and cash equivalents 2,718 3,425 1,182
Cash and cash equivalents at beginning of period [1] 10,129 6,704 5,522
Cash and cash equivalents at end of period [1] 12,847 10,129 6,704
Supplemental Cash Flow Information [Abstract]      
Interest paid 4,547 3,359 627
Parent Company      
Operating activities      
Net income attributable to Huntington 1,940 1,951 2,238
Adjustments to reconcile net income to net cash provided by operating activities:      
Equity in undistributed net income of subsidiaries (150) (513) (877)
Depreciation and amortization 7 0 (22)
Other, net (121) 192 (55)
Net cash provided by operating activities 1,676 1,630 1,284
Investing activities      
Investment in subsidiaries (1,750) 0 0
Repayments from subsidiaries 1,107 503 14
Advances to subsidiaries (1,700) (1,753) (503)
Sales of available-for-sale securities 0 0 (20)
Net cash paid in business acquisition 0 0 (194)
Other, net (21) (10) (1)
Net cash used in investing activities (2,364) (1,260) (704)
Financing activities      
Net proceeds from issuance of long-term debt 2,995 1,250 1,144
Payment of long-term debt (734) (323) 0
Net proceeds from issuance of long-term borrowings (1,047) (1,034) (1,010)
Net proceeds from issuance of preferred stock 0 317 0
Repurchase/redemption of preferred stock (410) (82) 0
Other, net (14) (22) (21)
Net cash provided by financing activities 790 106 113
Increase in cash and cash equivalents 102 476 693
Cash and cash equivalents at beginning of period 4,001 3,525 2,832
Cash and cash equivalents at end of period 4,103 4,001 3,525
Supplemental Cash Flow Information [Abstract]      
Interest paid $ 332 $ 228 $ 89
[1] Includes cash and due from banks and interest-earning deposits at the FRB, included within Interest-earning deposits with banks on our Consolidated Balance Sheets.