Goodwill - Summary of Changes in Goodwill (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2020 CNY (¥)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Acquisition of Paipai	¥ 1,799,529
Other acquisition	3,886
Balance of goodwill as of December 31, 2020 and 2021	¥ 1,803,415	¥ 1,803,415	$ 282,995

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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