Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 1,505	$ 1,570	$ 4,326	$ 4,764
Other comprehensive income (loss), before tax and net of reclassifications into Net income
Net change in debt securities	1,621	(932)	1,917	(304)
Net change in cash flow hedge derivatives	1,475	(35)	1,533	176
Pension and other postretirement benefit plan adjustments		1	(1)	(3)
Net change in Other	(1)	1	(3)	8
Other comprehensive income (loss), before tax and net of reclassifications into Net income	3,095	(965)	3,446	(123)
Income tax benefit (expense) related to items of other comprehensive income	(739)	229	(824)	34
Other comprehensive income (loss), after tax and net of reclassifications into Net income	2,356	(736)	2,622	(89)
Comprehensive income	3,861	834	6,948	4,675
Less: Comprehensive income attributable to noncontrolling interests	15	16	47	50
Comprehensive income attributable to PNC	$ 3,846	$ 818	$ 6,901	$ 4,625