Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income attributable to Huntington	$ 2,211	$ 1,940	$ 1,951
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available-for-sale securities, net of hedges	627	(271)	154
Net change related to cash flow hedges on loans	294	96	269
Translations adjustments, net of hedges	8	(6)	2
Change in accumulated unrealized losses for pension and other post-retirement obligations	29	(9)	(3)
Other comprehensive income (loss), net of tax	958	(190)	422
Comprehensive income attributable to Huntington	3,169	1,750	2,373
Comprehensive income attributed to non-controlling interest	18	20	20
Comprehensive income	$ 3,187	$ 1,770	$ 2,393