Loan Sale and Servicing Activities and Variable Interest Entities (Non-Consolidated VIEs) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
PNC Risk of Loss	$ 25,118	$ 26,160
Carrying Value of Assets	556,519	561,580
Carrying Value of Liabilities	503,838	510,439
Variable Interest Entity, Primary Beneficiary
Carrying Value of Assets	25,011	26,084
Carrying Value of Liabilities	2,072	2,119
Investment, proportional amortization method, elected, amount	3,300	3,000
Amount of New Markets Tax Credit	200	200
Investment program, proportional amortization method, elected, commitment	1,800	1,600
New Markets Tax Credit liability	100	200
Variable Interest Entity, Primary Beneficiary | Mortgage-Backed Securitizations
PNC Risk of Loss	20,081	21,451
Carrying Value of Assets	20,085	21,453
Carrying Value of Liabilities
Variable Interest Entity, Primary Beneficiary | Tax Credit Investments And Other
PNC Risk of Loss	5,037	4,709
Carrying Value of Assets	4,926	4,631
Carrying Value of Liabilities	$ 2,072	$ 2,119