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Preferred Stock and Common stock - Additional Information (Detail)			6 Months Ended
	Mar. 31, 2021 shares	Feb. 28, 2021 vote	Jun. 30, 2022 stockClass vote shares	Dec. 31, 2021 shares	Apr. 30, 2021 $ / shares shares
Preferred stock shares outstanding (in shares)			0
Preferred stock, shares issued (in shares)			0
Common stock shares authorized (in shares)			13,850,000,000	13,850,000,000
Number of classes of common stock | stockClass			3
Common Class A
Common stock shares authorized (in shares)			12,500,000,000	12,500,000,000
Voting rights, number of votes for each share | vote			1
Common Class B
Common stock shares authorized (in shares)			1,250,000,000	1,250,000,000
Common Class C
Conversion of stock, shares issued (in shares)	15,200,000
Common Stock voting rights		Each share of Class C common stock is entitled to twenty votes
Common stock shares authorized (in shares)			100,000,000	100,000,000
Voting rights, number of votes for each share | vote			20
Number of votes per share of common stock | vote		20
Restated Certificate Of Incorporation [Member] | Undesignated Preferred Stock
Preferred stock, shares authorized (in shares)					25,000,000
Preferred stock, par value (in dollars per share) | $ / shares					$ 0.00001
Restated Certificate Of Incorporation [Member] | Common Class A
Common stock shares authorized (in shares)					12,500,000,000
Restated Certificate Of Incorporation [Member] | Common Class B
Common stock shares authorized (in shares)					1,250,000,000
Restated Certificate Of Incorporation [Member] | Common Class C
Common stock shares authorized (in shares)					100,000,000

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights.

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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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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