Aggregate catch-up expense.

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- Definition

Increase to market capitalization for each remaining milestone.

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- Definition

Market capitalization.

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- Definition

Number of operational milestones achieved.

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No definition available.

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- Definition

Number of operational milestones focused on adjusted EBITDA.

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- Definition

Number of operational milestones focused on revenue targets.

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- Definition

Number of tranches.

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No definition available.

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- Definition

Recognized catch-up expense during period.

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- Definition

Share-based compensation arrangement holding period of shares post-exercise.

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No definition available.

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- Definition

Share based compensation arrangement payment of exercise price per share.

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No definition available.

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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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 noncash expense for share-based payment arrangement.

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- Definition

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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Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

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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

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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- Definition

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

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Equity Incentive Plans - Additional Information (Detail) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended				9 Months Ended
	Mar. 31, 2018 USD ($) Milestone Tranches shares	Sep. 30, 2022 USD ($)	Mar. 31, 2022 USD ($) Milestone	Dec. 31, 2021 shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) Tranches $ / shares	Sep. 30, 2021 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of operational milestones achieved \| Milestone			3
Stock-based compensation						$ 1,141	$ 1,563
2018 CEO Performance Award [Member] \| Chief Executive Officer [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options grant \| shares	304,000,000.0
Number of vesting tranches CEO Performance Award consists \| Tranches	12					12
Award vesting description						Each of the 12 vesting tranches of the 2018 CEO Performance Award will vest upon certification by the Board of Directors that both (i) the market capitalization milestone for such tranche, which begins at $100.0 billion for the first tranche and increases by increments of $50.0 billion thereafter (based on both a six calendar month trailing average and a 30 calendar day trailing average, counting only trading days), has been achieved, and (ii) any one of the following eight operational milestones focused on total revenue or any one of the eight operational milestones focused on Adjusted EBITDA have been achieved for the four consecutive fiscal quarters on an annualized basis and subsequently reported by us in our consolidated financial statements filed with our Forms 10-Q and/or 10-K.
Increase to market capitalization for each remaining milestone	$ 50,000
Number of operational milestones focused on total revenue \| Milestone	8
Number of operational milestones focused on adjusted EBITDA \| Milestone	8
Payment of exercise price per share \| $ / shares						$ 23.34
Holding period of shares post-exercise	5 years
Stock-based compensation		$ 5			$ 190	$ 62	$ 665
Number Of Tranches \| Tranches	12					12
2018 CEO Performance Award [Member] \| Chief Executive Officer [Member] \| Operational Milestones Probable of Being Achieved [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Recognized catch-up expense during period			$ 11
Unrecognized compensation expense		4				$ 4
Weighted-average period of recognition of unrecognized compensation, in years						3 months 18 days
2018 CEO Performance Award [Member] \| Chief Executive Officer [Member] \| First Tranche Milestone [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Market capitalization	$ 100,000
Performance Based Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period, in years						2 years
Stock-based compensation		31				$ 134
Number of RSUs, Granted \| shares				2,200,000
2021 Performance-Based Stock Option & RSU Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period of recognition of unrecognized compensation, in years						2 years 8 months 12 days
Aggregate catch-up expense			$ 30
2021 Performance-Based Stock Option & RSU Awards [Member] \| Chief Executive Officer [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense		$ 236				$ 236