Income Taxes - Summary of Reconciliation of Tax Expense Computed by Applying Statutory Income Tax Rate to Pre-Tax Loss or Income (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2020 CNY (¥)
Income Tax Disclosure [Abstract]
Income tax benefit at PRC statutory rate	¥ (8,444)	$ (1,224)	¥ (1,502,997)	¥ (1,745,969)
Effect of differing tax rates in different jurisdictions	184,999	26,822	377,604	291,884
Non-deductible expenses	(119,094)	(17,267)	181,972	238,899
Research and development super-deduction	(115,975)	(16,815)	(162,103)	(159,919)
Effect of PRC preferential tax rates and tax holiday	23,564	3,416	269,585	281,437
Other adjustments	(41,940)	(6,080)	(2,151)	(73,027)
Change in valuation allowance	160,890	23,327	934,635	1,189,971
Income tax expense	¥ 84,000	$ 12,179	¥ 96,545	¥ 23,276

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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 the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income exempt from income tax because of a tax holiday.

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