Loan Sale and Servicing Activities and Variable Interest Entities (Non-Consolidated VIEs) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
PNC Risk of Loss	$ 27,263	$ 27,077
Carrying Value of Assets Owned by PNC	561,777	557,263
Carrying Value of Liabilities Owned by PNC	512,703	511,451
Variable Interest Entity, Primary Beneficiary
Carrying Value of Assets Owned by PNC	27,099	26,910
Carrying Value of Liabilities Owned by PNC	2,033	2,064
Variable Interest Entity, Primary Beneficiary | Mortgage-Backed Securitizations
PNC Risk of Loss	22,925	22,666
Carrying Value of Assets Owned by PNC	22,928	22,670
Carrying Value of Liabilities Owned by PNC	1	1
Variable Interest Entity, Primary Beneficiary | Tax Credit Investments And Other
PNC Risk of Loss	4,338	4,411
Carrying Value of Assets Owned by PNC	4,171	4,240
Carrying Value of Liabilities Owned by PNC	$ 2,032	$ 2,063