Total Equity and Other Comprehensive Income (Tarp Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2017	Oct. 17, 2017	Oct. 16, 2017	Oct. 03, 2017	Dec. 31, 2016	Sep. 30, 2016
Redemption of noncontrolling interests	$ (1,000)
Dividend Declared [Member]
Dividends Payable Amount Per Share	$ 0.66
TARP Warrant [Member]
Number of warrants or rights outstanding (shares)	4,000,000				11,300,000	13,400,000
Exercise price per share of warrants or rights outstanding	$ 67.28
PNC Capital Trust C [Member]
Principal Amount Of Junior Subordinated Debt	$ 200
Junior Subordinated Debentures Issuance Date	Jun. 01, 1998
PNC Preferred Funding Trust I [Member]
Fixed to Floating Rate Of Non Cumulative Exchangeable Trust securities	2.61%
PNC Preferred Funding Trust II [Member]
Fixed to Floating Rate Of Non Cumulative Exchangeable Trust securities	2.19%
Subsequent Event [Member] | Dividend Declared [Member]
Dividends Payable Amount Per Share				$ 0.75
Subsequent Event [Member] | TARP Warrant [Member]
Exercise price per share of warrants or rights outstanding		$ 67.24	$ 67.28
Number of shares into which each warrant or right may be converted (shares)		1.00