Consolidated Statement of Changes in Equity - USD ($) shares in Millions, $ in Millions		Total		Cumulative Effect, Period of Adoption, Adjustment	[2]	Cumulative Effect, Period of Adoption, Adjusted Balance	[1]	Common stock		Common stock Cumulative Effect, Period of Adoption, Adjusted Balance		Capital Surplus - Preferred Stock		Capital Surplus - Preferred Stock Cumulative Effect, Period of Adoption, Adjusted Balance	[1]	Capital Surplus - Common Stock and Other		Capital Surplus - Common Stock and Other Cumulative Effect, Period of Adoption, Adjusted Balance	[1]	Retained Earnings		Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	[2]	Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance	[1]	Accumulated Other Comprehensive Income (Loss)		Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjusted Balance	[1]	Treasury Stock		Treasury Stock Cumulative Effect, Period of Adoption, Adjusted Balance	[1]	Noncontrolling Interests		Noncontrolling Interests Cumulative Effect, Period of Adoption, Adjusted Balance	[1]
Beginning Balance (in shares) at Dec. 31, 2019	[1]							433		433
Common Stock [Abstract]
Treasury stock activity, shares								(9)
Ending Balance, (in shares) at Dec. 31, 2020	[1]							424
Total Equity, Beginning Balance at Dec. 31, 2019		$ 49,343	[1]	$ (671)		$ 48,672		$ 2,712	[1]	$ 2,712	[1]	$ 3,993	[1]	$ 3,993		$ 12,376	[1]	$ 12,376		$ 42,215	[1]	$ (671)		$ 41,544		$ 799	[1]	$ 799		$ (12,781)	[1]	$ (12,781)		$ 29	[1]	$ 29
Common Stock [Abstract]
Net income		7,558																		7,517														41
Other comprehensive income, net of tax		1,971																								1,971
Dividends, Cash [Abstract]
Common		(1,980)																		(1,980)
Preferred		(229)																		(229)
Preferred stock discount accretion												4								(4)
Common stock activity	[3]	24						1								23
Treasury stock activity		(1,370)														54														(1,424)
Preferred stock redemption	[4]	(480)										(480)
Other		(125)														(86)																		(39)
Total Equity, Ending Balance at Dec. 31, 2020	[1]	54,041						$ 2,713				3,517				12,367				46,848						2,770				(14,205)				31
Common Stock [Abstract]
Treasury stock activity, shares								(4)
Ending Balance, (in shares) at Dec. 31, 2021	[1]							420
Common Stock [Abstract]
Net income		5,725																		5,674														51
Other comprehensive income, net of tax		(2,361)																								(2,361)
Dividends, Cash [Abstract]
Common		(2,056)																		(2,056)
Preferred		(233)																		(233)
Preferred stock discount accretion												5								(5)
Common stock activity	[3]	25														25
Treasury stock activity		(823)														84														(907)
Preferred stock issuance	[5]	1,487										1,487
Other		(79)														(28)																		(51)
Total Equity, Ending Balance at Dec. 31, 2021	[1]	55,726						$ 2,713				5,009				12,448				50,228						409				(15,112)				31
Common Stock [Abstract]
Treasury stock activity, shares								(19)
Ending Balance, (in shares) at Dec. 31, 2022	[1]							401
Common Stock [Abstract]
Net income		6,113																		6,041														72
Other comprehensive income, net of tax		(10,581)																								(10,581)
Dividends, Cash [Abstract]
Common		(2,391)																		(2,391)
Preferred		(301)																		(301)
Preferred stock discount accretion												5								(5)
Common stock activity	[3]	31						$ 1								30
Treasury stock activity		(3,543)														61														(3,604)
Preferred stock redemption	[6]	(1,500)										(1,500)
Preferred stock issuance	[7],[8]	2,232										2,232
Other		26														91																		(65)
Total Equity, Ending Balance at Dec. 31, 2022	[1]	$ 45,812						$ 2,714				$ 5,746				$ 12,630				$ 53,572						$ (10,172)	[9]			$ (18,716)				$ 38

[1] The par value of our preferred stock outstanding was less than $0.5 million at each date and, therefore, is excluded from this presentation.

[2] Represents the impact of the adoption of ASU 2016-13 - Financial Instruments - Credit Losses.

[3] Common stock activity totaled less than 0.5 million shares issued.

[4] On September 1, 2020, PNC redeemed all 4,800 shares of its Series Q preferred stock, as well as all 19.2 million depositary shares representing a fractional interest in such shares

[5] On September 13, 2021, PNC issued 1,500,000 depositary shares each representing 1/100th ownership in a share of 3.400% fixed-rate reset non-cumulative perpetual preferred stock, Series T, with a par value of $1 per share.

[6] On November 1, 2022, PNC redeemed all 15,000 shares of its Series P preferred stock, as well as all 60 million depositary shares each representing a fractional interest in such shares.

[7] On April 26, 2022, PNC issued 1,000,000 depositary shares each representing 1/100th ownership in a share of 6.000% fixed-rate reset non-cumulative perpetual preferred stock, Series U, with a par value of $1 per share.

[8] On August 19, 2022, PNC issued 1,250,000 depositary shares each representing 1/100th ownership in a share of 6.200% fixed-rate reset non-cumulative perpetual preferred stock, Series V, with a par value of $1 per share.

[9] At December 31, 2022, AOCI included pretax losses of $314 million from derivatives that hedged the purchase of investment securities classified as held to maturity.