Segment Information - Additional Information (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2021 CNY (¥) Segments	Dec. 31, 2021 USD ($) Segments	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)
Disclosure of operating segments [line items]
Number of reportable segments	2	2
Revenue	¥ 21,265,930	$ 3,363,691	¥ 20,581,170	¥ 18,016,085
One customer group [member]
Disclosure of operating segments [line items]
Revenue	¥ 5,328,000	$ 842,700	¥ 6,018,200	¥ 5,205,500

The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details