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Income Taxes - Additional Information (Detail) ¥ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥)
Income Taxes [Line Items] |  |  |  |
Unified statutory income tax rate under current EIT law | 25.00% | 25.00% |  |
PRC statutory withholding tax rate to which dividends paid by a FIE to any of its foreign non-resident enterprise investors | 10.00% | 10.00% |  |
PRC special withholding tax rate to which dividends paid by a FIE to its foreign non-resident enterprise investors in Hong Kong | 5.00% | 5.00% |  |
Statutory withholding tax rate for capital gains | 10.00% | 10.00% |  |
Net losses deriving from entities in the PRC, Hong Kong and Japan | ¥ 23,700 |  | $ 3,300 |
Accrued withholding tax | 1,500 | $ 207 |  |
Undistributed earnings no withholding tax has accrued | ¥ 171,800 |  | 24,200 |
High And New Technology Enterprise |  |  |  |
Income Taxes [Line Items] |  |  |  |
A preferential enterprise income tax rate | 15.00% | 15.00% |  |
Net operating loss carryforward period | 10 years | 10 years |  |
PRC |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryforward period | 5 years | 5 years |  |
Net operating loss carryforwards begins to expire | 2024 | 2024 |  |
Baidu HK |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax rate | 16.50% | 16.50% |  |
Certain PRC Subsidiaries and VIEs | High And New Technology Enterprise |  |  |  |
Income Taxes [Line Items] |  |  |  |
A preferential enterprise income tax rate | 15.00% | 15.00% |  |
Other non-current liabilities |  |  |  |
Income Taxes [Line Items] |  |  |  |
Unrecognized tax benefits | ¥ 670 |  | $ 94 | ¥ 670

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- Definition The amount of deferred tax liability accrued in the current period which attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity. + References No definition available. + Details
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- Definition The special withholding tax rate to which dividends paid by a foreign-invested enterprise onshore in China to any of its Hong Kong non-resident enterprise investors offshore are subject. These Hong Kong investors must meet the requirements stipulated by China's tax regulations. + References No definition available. + Details
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