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Business Combination - Summary of fair value of assets acquired and liabilities assumed (Detail) ¥ in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	Sep. 30, 2021 CNY (¥)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Intangible assets:
Goodwill			¥ 4,625,115		$ 725,781	¥ 0
Camelot Group [Member]
Schedule Of Recognized Identified Assets Acquired And Liabilities Assumed [Line Items]
Total fair value of purchase consideration	¥ 5,290,553	$ 830,203	5,290,553	$ 830,203
Cash and cash equivalents			618,439		97,047
Restricted cash			1,126		177
Accounts receivable and other assets			940,297		147,553
Property and equipment, net			12,224		1,918
Intangible assets:
Deferred tax assets			59,060		9,268
Deferred tax liabilities			(268,490)		(42,132)
Accounts payable and other liabilities			(878,885)		(137,916)
Non-controlling interests			(882,451)		(138,476)
Goodwill			4,561,033		715,725
Customer Relationships [Member] | Camelot Group [Member]
Intangible assets:
Intangible assets			620,100		97,307
Trademarks [Member] | Camelot Group [Member]
Intangible assets:
Intangible assets			474,000		74,381
Copyrights [Member] | Camelot Group [Member]
Intangible assets:
Intangible assets			¥ 34,100		$ 5,351

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- Definition

Business combination recognized identifiable assets acquired and liabilities assumed accounts receivables and other assets.

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This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date.

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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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