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Stock-Based Compensation - Summary of RSU and PSA Activity (Detail) - Restricted Stock Units (RSU) and Performance Share Awards (PSAs) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Beginning Balance (in shares)	1,071,652,000	896,463,000	756,786,000
Granted (in shares)	374,931,000	400,854,000	600,820,000
Forfeited (in shares)	(103,499,000)	(89,483,000)	(223,677,000)
Shares delivered (in shares)	(231,702,000)	(136,182,000)	(237,466,000)
Ending Balance (in shares)	1,111,382,000	1,071,652,000	896,463,000

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

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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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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