Dividends, cash per common or preferred share

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Surrender of share of series non- voting preferred stock.

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Number of shares issued for each share of convertible preferred stock that is converted.

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Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

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- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Per share or per unit amount of equity securities issued.

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No definition available.

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Number of new stock issued during the period.

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Capital Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	May 15, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 06, 2020
Schedule of Capitalization, Equity [Line Items]
Preferred stock shares outstanding		0	0		0
Dividends, cash per common or preferred share		$ 16.52	$ 14.52	$ 13.20
Aggregate dividends		$ 2,547	$ 2,260	$ 2,096
Common shares repurchased, value		$ 1,200	$ 1,512	$ 1,666
Share Repurchase Program [Member]
Schedule of Capitalization, Equity [Line Items]
Common shares repurchased		1,400,000
Common shares repurchased, value		$ 1,200
Shares authorized to be repurchased		3,600,000
PNC [Member]
Schedule of Capitalization, Equity [Line Items]
Common shares repurchased	2,650,857
Common shares repurchased price per share	$ 414.96
PNC [Member] \| Series C Nonvoting Participating Preferred Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Surrender of share of series non- voting preferred stock				143,458
PNC [Member] \| Common Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Shares issued upon conversion	823,188
PNC [Member] \| Secondary Public Offering [Member] \| Common Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Shares issued	31,628,573
Shares issued, price per share	$ 420
PNC [Member] \| Over Allotment Option [Member] \| Common Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Shares issued to purchase additional shares	2,875,325