Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 5,953	$ 5,647	$ 6,113
Other comprehensive income (loss), before tax and net of reclassifications into Net income
Net change in debt securities	965	1,753	(10,143)
Net change in cash flow hedge derivatives	527	1,303	(3,276)
Pension and other postretirement benefit plan adjustments	21	166	(363)
Net change in Other	1	5	(5)
Other comprehensive income (loss), before tax and net of reclassifications into Net income	1,514	3,227	(13,787)
Income tax benefit (expense) related to items of other comprehensive income	(367)	(767)	3,206
Other comprehensive income (loss), after tax and net of reclassifications into Net income	1,147	2,460	(10,581)
Comprehensive income (loss)	7,100	8,107	(4,468)
Less: Comprehensive income attributable to noncontrolling interests	64	69	72
Comprehensive income (loss) attributable to PNC	$ 7,036	$ 8,038	$ (4,540)