Fair value of restricted stock units and restricted stock granted to employees.

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The number of additional grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Share based compensation arrangement by share based payment award equity instruments other than options granted in period fair value.

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Share based compensation arrangement by share based payment award equity instruments other than options surrendered in period.

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Share based compensation arrangement by share based payment award equity instruments other than options that cliff vest.

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- Definition

Shares committed to fund long term incentive plans.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Date the equity-based award expires, in CCYY-MM-DD format.

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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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No definition available.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Price of a single share of a number of saleable stocks of a company.

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Percentage of vesting of award under share-based payment arrangement.

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Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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No definition available.

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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	6 Months Ended
	Jan. 31, 2019	Jan. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock and RSUs, Granted			1,166,382
Fair value of RSUs/restricted stock granted to employees			$ 482
RSUs/Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock and RSUs, Granted		674,206
Award vesting period, years		3 years
Awards to employees cliff vesting		377,291
RSUs to employees that cliff vest, percentage		100.00%
RSUs to employees that cliff vest, date		Jan. 31, 2022
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of outstanding RSUs			$ 1,100
Stock price			$ 469.30
Unrecognized stock-based compensation expense			$ 512
Remaining weighted-average period			1 year 6 months
Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock and RSUs, Granted		283,014	283,014
Award vesting period, years		3 years
Awards to employees cliff vesting		283,014
RSUs to employees that cliff vest, percentage		100.00%
RSUs to employees that cliff vest, date		Jan. 31, 2022
Intrinsic value of outstanding RSUs			$ 356
Stock price			$ 469.30
Unrecognized stock-based compensation expense			$ 161
Remaining weighted-average period			1 year 7 months 6 days
Restricted Stock and RSUs, Additional Grants		2,117	2,117
Fair value of RSUs/restricted stock granted to employees			$ 117
Long-Term Incentive Plans Funded by PNC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares surrendered	143,458
Long-Term Incentive Plans Funded by PNC [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares committed to fund long-term incentive plans			4,000,000
Performance-Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining weighted-average period			4 years 4 months 24 days
Stock options outstanding			2,106,482	2,106,482
Weighted average exercise price			$ 513.50	$ 513.50
Unrecognized stock-based compensation expense			$ 148