Loan Sale and Servicing Activities and Variable Interest Entities (Non-Consolidated VIEs) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
PNC Risk of Loss	$ 27,077	$ 22,573
Carrying Value of Assets Owned by PNC	557,263	557,191
Carrying Value of Liabilities Owned by PNC	511,451	501,465
Variable Interest Entity, Primary Beneficiary
Carrying Value of Assets Owned by PNC	26,910	22,601
Carrying Value of Liabilities Owned by PNC	2,064	1,799
Mortgage-Backed Securitizations | Variable Interest Entity, Primary Beneficiary
PNC Risk of Loss	22,666	18,708
Carrying Value of Assets Owned by PNC	22,670	18,708
Carrying Value of Liabilities Owned by PNC	1	1
Tax Credit Investments And Other | Variable Interest Entity, Primary Beneficiary
PNC Risk of Loss	4,411	3,865
Carrying Value of Assets Owned by PNC	4,240	3,893
Carrying Value of Liabilities Owned by PNC	$ 2,063	$ 1,798