Loan Sale and Servicing Activities and Variable Interest Entities (Non-Consolidated VIEs) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
PNC Risk of Loss	$ 26,160	$ 27,077
Carrying Value of Assets	561,580	557,263
Carrying Value of Liabilities	510,439	511,451
Variable Interest Entity, Primary Beneficiary
Carrying Value of Assets	26,084	26,910
Carrying Value of Liabilities	2,119	2,064
Mortgage-Backed Securitizations | Variable Interest Entity, Primary Beneficiary
PNC Risk of Loss	21,451	22,666
Carrying Value of Assets	21,453	22,670
Carrying Value of Liabilities		1
Tax Credit Investments And Other | Variable Interest Entity, Primary Beneficiary
PNC Risk of Loss	4,709	4,411
Carrying Value of Assets	4,631	4,240
Carrying Value of Liabilities	2,119	$ 2,063
Low Income Housing Tax Credit Investments
Carrying Value of Assets	3,000
Carrying Value of Liabilities	1,600
NMTC
Carrying Value of Assets	200
Carrying Value of Liabilities	$ 200