Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
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-Section S99
-Paragraph 1
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Topic 280
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 606
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+ Details

Principal Accounting Policies - Summary of the Disaggregated Revenues (Parenthetical) (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)
Disaggregation of Revenue [Line Items]
Revenue	¥ 11,238,638	$ 1,539,687	¥ 8,436,159	¥ 6,733,644
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue	84,944		101,201	91,300
Value Added Tax Services [Member]
Disaggregation of Revenue [Line Items]
Revenues attributable to value added tax	¥ 5,098,000		4,173,000	3,551,000
Transaction Service [Member] \| Freight Listing Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue			101,200	91,300
Transaction Service [Member] \| Other Value Added Services [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue			¥ 4,700	¥ 4,600