Cover Page - shares	3 Months Ended
	Mar. 31, 2020	Apr. 16, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-09718
Entity Registrant Name	PNC Financial Services Group, Inc.
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	25-1435979
Entity Address, Address Line One	The Tower at PNC Plaza
Entity Address, Address Line Two	300 Fifth Avenue
Entity Address, City or Town	Pittsburgh
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	15222-2401
City Area Code	888
Local Phone Number	762-2265
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		424,260,434
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000713676
Current Fiscal Year End Date	--12-31
Common Stock, par value $5.00 | NEW YORK STOCK EXCHANGE, INC.
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $5.00
Trading Symbol	PNC
Security Exchange Name	NYSE
Depositary Shares Each Representing a 1/4,000 Interest in a Share of Fixed-to- Floating Rate Non-Cumulative Perpetual Preferred Stock, Series P | NEW YORK STOCK EXCHANGE, INC.
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares Each Representing a 1/4,000 Interest in a Share of Fixed-to- Floating Rate Non-Cumulative Perpetual Preferred Stock, Series P
Trading Symbol	PNC P
Security Exchange Name	NYSE
Depositary Shares Each Representing a 1/4,000 Interest in a Share of 5.375% Non-Cumulative Perpetual Preferred Stock, Series Q | NEW YORK STOCK EXCHANGE, INC.
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares Each Representing a 1/4,000 Interest in a Share of 5.375% Non-Cumulative Perpetual Preferred Stock, Series Q
Trading Symbol	PNC Q
Security Exchange Name	NYSE