Regulatory Matters (Basel Regulatory Capital) (Details) - Transitional Basel III - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
PNC
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 Capital amount	$ 39,685	$ 40,066
Common equity Tier 1 Capital ratio	9.10%	10.30%
Tier 1 Risk-based capital amount	$ 45,431	$ 45,075
Tier 1 Risk-based capital ratio	0.104	0.116
US regulatory well capitalized level - Tier 1 risk-based capital ratio	0.060	0.060
Total Risk-based capital amount	$ 53,440	$ 52,451
Total Risk-based capital ratio	0.123	0.135
US regulatory well capitalized level - Total risk-based capital ratio	0.100	0.100
Leverage amount	$ 45,431	$ 45,075
Leverage ratio	0.082	0.082
PNC Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 Capital amount	$ 43,658	$ 42,024
Common equity Tier 1 Capital ratio	10.20%	11.10%
US regulatory well capitalized level - Common equity Tier 1 risk-based capital ratio	6.50%	6.50%
Tier 1 Risk-based capital amount	$ 43,658	$ 42,024
Tier 1 Risk-based capital ratio	0.102	0.111
US regulatory well capitalized level - Tier 1 risk-based capital ratio	0.080	0.080
Total Risk-based capital amount	$ 50,666	$ 49,083
Total Risk-based capital ratio	0.118	0.129
US regulatory well capitalized level - Total risk-based capital ratio	0.100	0.100
Leverage amount	$ 43,658	$ 42,024
Leverage ratio	0.080	0.078
US regulatory well capitalized level - Leverage ratio	0.050	0.050