Related Party Transactions - Additional Information (Detail) ¥ in Millions, $ in Millions	12 Months Ended
Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)
Related Party Transactions With Investees [Abstract]
Purchased from related parties	¥ 2,500	$ 346	¥ 2,600	¥ 2,200
Related Party
Related Party Transactions With Others [Abstract]
Sales to related parties	¥ 2,728	$ 374	2,699	2,243
Related Party C \| Related Party
Related Party Transactions With Others [Abstract]
Sales to related parties			¥ 1,800	¥ 2,200

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details