Borrowed Funds (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total borrowed funds	$ 72,737	$ 58,713
PNC Capital Trust C
Debt Instrument [Line Items]
Carrying value - junior subordinated debt	206
Trust preferred securities	200
Parent Company
Debt Instrument [Line Items]
Total borrowed funds	23,971	13,103
Bank
Debt Instrument [Line Items]
Total borrowed funds	45,740	41,936
Senior Notes \| Parent Company
Debt Instrument [Line Items]
Total borrowed funds	22,221	11,374
Basis adjustments - fair value accounting hedges	(355)
Senior Notes \| Bank
Debt Instrument [Line Items]
Total borrowed funds	4,615	5,283
Basis adjustments - fair value accounting hedges	(164)
Subordinated Debt \| Parent Company
Debt Instrument [Line Items]
Total borrowed funds	1,544	1,524
Basis adjustments - fair value accounting hedges	(52)
Subordinated Debt \| Bank
Debt Instrument [Line Items]
Total borrowed funds	3,125	$ 4,578
Basis adjustments - fair value accounting hedges	$ (166)

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