Gross margin.

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Increase to market capitalization for each remaining milestone.

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Initial market capitalization.

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Market capitalization.

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Number of operational milestones focused on adjusted EBITDA.

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Number of operational milestones focused on revenue targets.

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Number of operational milestones focused on revenue targets and adjusted EBITDA.

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Number of tranches.

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Number of vehicle production.

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Operational milestone based on adjusted EBITDA one.

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Operational milestone based on adjusted EBITDA two.

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- Definition

Operational milestone based on revenue.

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Portion of stock options scheduled to vest upon successful completion of performance objectives.

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Share based compensation arrangement by share based payment award divided equally in number of tranches.

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- Definition

Aggregate number of common shares reserved for future issuance.

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Maximum term of the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of tax benefit from exercise of stock options granted under share-based compensation arrangement.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Equity Incentive Plans - Additional Information (Detail)	1 Months Ended			3 Months Ended			6 Months Ended
	Mar. 31, 2018 USD ($) Tranches milestone $ / shares shares	Dec. 31, 2014 Tranches shares	Aug. 31, 2012 Tranches shares	Jun. 30, 2019 USD ($) milestone shares	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) Tranches milestone Vehicle shares	Jun. 30, 2018 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Contractual term of stock options, in years							10 years
Number of stock options grant \| shares							0
Unrecognized compensation expense				$ 1,600,000,000			$ 1,600,000,000
Weighted-average period of recognition of unrecognized compensation, in years							3 years
Stock-based compensation							$ 418,241,000	$ 338,983,000
Aggregate number of vehicle production \| Vehicle							300,000
Income tax benefit from stock option exercises							$ 0
Upon Completion of First Model X Production Vehicle [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Portion of stock options scheduled to vest upon successful completion of performance objectives							25.00%
Upon Achieving Aggregate Production of 100,000 Vehicles in Trailing 12-month Period [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Portion of stock options scheduled to vest upon successful completion of performance objectives							25.00%
Aggregate number of vehicle production \| Vehicle							100,000
Upon Completion of First Gen III Production Vehicle [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Portion of stock options scheduled to vest upon successful completion of performance objectives							25.00%
Annualized Gross Margin of Greater Than 30% for Any Three Year Period [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Portion of stock options scheduled to vest upon successful completion of performance objectives							25.00%
Gross margin							30.00%
Fourth Tranche [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of vehicle production \| Vehicle							100,000
Third Tranche [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of vehicle production \| Vehicle							200,000
2014 Performance-based Stock Option Grants [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options grant \| shares		1,073,000
Number of vesting tranches \| Tranches		4
2014 Performance-based Stock Option Grants [Member] \| Performance Condition Not Considered Probable Achievement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense					$ 9,900,000
Stock-based compensation				$ 0		$ 0	$ 0	0
Chief Executive Officer [Member] \| 2018 CEO Performance Award [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options grant \| shares	20,264,042
Stock option awards exercise price \| $ / shares	$ 350.02
Number of vesting tranches CEO Performance Award consists \| Tranches	12
Increase to market capitalization for each remaining milestone	$ 50,000,000,000
Number of operational milestones focused on revenue \| milestone	8
Number of operational milestones focused on adjusted EBITDA \| milestone	8
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 billion for the first tranche and increases by increments of $50 billion thereafter, and (ii) any one of the following eight operational milestones focused on revenue or eight operational milestones focused on Adjusted EBITDA have been met for the previous four consecutive fiscal quarters on an annualized basis.
Number of operational milestones achieved \| milestone				2			2
Operational milestones based on total revenue							$ 20,000,000,000.0
Operational milestone based on adjusted EBITDA one							1,500,000,000
Operational milestone based on adjusted EBITDA two							$ 3,000,000,000.0
Number of vesting tranches \| Tranches							0
Stock-based compensation				$ 55,600,000		55,700,000	$ 110,700,000	62,400,000
Chief Executive Officer [Member] \| 2018 CEO Performance Award [Member] \| Operational Milestones Probable of Being Achieved [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Operational milestone based on adjusted EBITDA two							3,000,000,000.0
Chief Executive Officer [Member] \| 2018 CEO Performance Award [Member] \| Operational Milestones Achieved but not Vested or Probable of Being Achieved [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense				487,400,000			487,400,000
Weighted-average period of recognition of unrecognized compensation, in years					2 years 8 months 12 days
Chief Executive Officer [Member] \| 2018 CEO Performance Award [Member] \| Operational Milestones Not Considered Probable Achievement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense				1,500,000,000			1,500,000,000
Chief Executive Officer [Member] \| 2018 CEO Performance Award [Member] \| First Tranche Milestone [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Market capitalization	$ 100,000,000,000
Chief Executive Officer [Member] \| 2012 CEO Performance Award [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options grant \| shares			5,274,901
Number of vesting tranches CEO Performance Award consists \| Tranches			10
Market capitalization				4,000,000,000.00			4,000,000,000.00
Stock-based compensation				0		$ 0	0	$ 100,000
Initial market capitalization				$ 3,200,000,000			$ 3,200,000,000
Chief Executive Officer [Member] \| 2012 CEO Performance Award [Member] \| Performance Condition Not Considered Probable Achievement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense					$ 5,700,000
2010 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares were reserved for issuance \| shares				12,260,875			12,260,875
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period, in years							4 years