Beneficial corporate income tax rate.

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Beneficial corporate income tax rate for certain enterprises.

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Corporate income tax rate.

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Income taxes.

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Research tax credit carry forward expiration dates .

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Tax credit carry forward expiration year.

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Unrecognized tax benefits of deferred tax accounting that would not impact annual effective rate.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible general business tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences.

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Tax year being audited in the income tax examination, in CCYY format.

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

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Provision for income taxes	$ 292,000,000	$ 110,000,000	$ 58,000,000
Deferred Tax Assets Valuation Allowance	2,930,000,000	1,956,000,000
Deferred tax assets, net	2,018,000,000	1,454,000,000
Research and development credits	624,000,000	486,000,000
Deferred tax liability	0
Unrecognized tax benefits, that would not affect effective tax rate	$ 353,000,000
Minimum [Member] \| IRS [Member]
Income Taxes [Line Items]
Income tax examination, years	2015
Maximum [Member] \| IRS [Member]
Income Taxes [Line Items]
Income tax examination, years	2018
Shanghai, China [Member]
Income Taxes [Line Items]
Corporate income tax rate to certain enterprises	15.00%
Corporate income tax rate	25.00%
Beneficial income tax rate	15.00%
Foreign jurisdictions [Member]
Income Taxes [Line Items]
Deferred tax assets, net	$ 260,000,000
Federal [Member]
Income Taxes [Line Items]
Operating loss carry-forwards	$ 9,650,000,000
Operating loss carry-forwards beginning to expire in the year	Dec. 31, 2024
Research and development credits	$ 417,000,000
Research and development tax credits, federal carry-forwards expiration date	2024
General business tax credit	$ 167,000,000
General business tax credits, beginning to expire in the year	2033
Federal [Member] \| Minimum [Member]
Income Taxes [Line Items]
Income tax examination, years	2004
Federal [Member] \| Maximum [Member]
Income Taxes [Line Items]
Income tax examination, years	2019
State [Member]
Income Taxes [Line Items]
Operating loss carry-forwards	$ 6,600,000,000
Operating loss carry-forwards beginning to expire in the year	Dec. 31, 2031
Research and development credits	$ 373,000,000
California \| Minimum [Member]
Income Taxes [Line Items]
Income tax examination, years	2004
California \| Maximum [Member]
Income Taxes [Line Items]
Income tax examination, years	2019
U.S. and foreign jurisdictions [Member] \| Minimum [Member]
Income Taxes [Line Items]
Income tax examination, years	2008
U.S. and foreign jurisdictions [Member] \| Maximum [Member]
Income Taxes [Line Items]
Income tax examination, years	2019
Solar City
Income Taxes [Line Items]
Increase (Decrease) in valuation on deferred taxes	$ 974,000,000	$ 150,000,000	$ (38,000,000)