Percentage of fair value of common stock.

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Percentage of ownership.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of noncash expense for 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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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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No definition available.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Sep. 30, 2020	Aug. 30, 2020	Aug. 06, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cumulative stock-based compensation expense				$ 778,215	$ 1,270,702	$ 241,970
Percentage of outstanding stock maximum				5.00%
Unrecognized share based compensation expense				$ 888,600
Unrecognized share based compensation expense, period for recognition				8 years
Stock-based compensation				$ 778,215	1,270,702	241,970
Share based compensation by share based payment arrangement aggregate intrinsic value of stock options excercised during the period				3,800,000	$ 974,200	$ 90,700
Share based compensation by share based payment arrangement weighted average grant date fair value of stock options granted during the period					$ 2.57	$ 3.67
Share based compensation by share based payment arrangement total grant date fair value of stock options vested during the period				189,500	$ 214,700	$ 229,400
Income tax benefit				31,885	(12,636)	12,375
Stock Based Compensation Expense
Income tax benefit				$ 0	$ 18,200	$ 6,400
2020 Extended Exercisability [Member]
Share based payment award expiration period and option contractual term				5 years
2020 Equity Incentive Plan [Member]
Percentage of ownership					10.00%
Shares reserved for future issuance	150,000,000		165,900,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			162,000,000
Minimum [Member] \| 2020 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent				110.00%
Common Class A [Member] \| 2020 Equity Incentive Plan [Member]
Share-based payment award, number of additional shares authorized	250,000,000
Share based payment award expiration period and option contractual term				10 years
Restricted Stock Units (RSUs) [Member]
Cumulative stock-based compensation expense					$ 769,500
Share based payment award vesting period	5 years
Unrecognized share based compensation expense				$ 922,400
Unrecognized share based compensation expense, period for recognition				3 years
Stock-based compensation					940,000
Equity Instruments Other than Options, Grants in Period				28,097,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value				$ 421,000	$ 531,900
Restricted Stock Units (RSUs) [Member] \| 2020 Equity Incentive Plan [Member]
Equity Instruments Other than Options, Grants in Period		3,900,000