Loan Sale and Servicing Activities and Variable Interest Entities (Non-Consolidated VIEs) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
PNC Risk of Loss	$ 25,681	$ 26,160
Carrying Value of Assets	566,162	561,580
Carrying Value of Liabilities	514,788	510,439
Low Income Housing Tax Credit Investments
Carrying Value of Assets	3,000	3,000
Carrying Value of Liabilities	1,600	1,600
New Market Tax Credit
Carrying Value of Assets	200	200
Carrying Value of Liabilities	100	200
Variable Interest Entity, Primary Beneficiary
Carrying Value of Assets	25,605	26,084
Carrying Value of Liabilities	1,960	2,119
Variable Interest Entity, Primary Beneficiary | Mortgage-Backed Securitizations
PNC Risk of Loss	20,918	21,451
Carrying Value of Assets	20,922	21,453
Carrying Value of Liabilities
Variable Interest Entity, Primary Beneficiary | Tax Credit Investments And Other
PNC Risk of Loss	4,763	4,709
Carrying Value of Assets	4,683	4,631
Carrying Value of Liabilities	$ 1,960	$ 2,119