Installment Payment Receivables, Net - Summary of sales type lease net investment in lease before allowance or credit loss (Detail) - Vehicles and Batteries [Member] - CNY (¥) ¥ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Sales-Type Lease, Net Investment in Lease, before Allowance for Credit Loss, Alternative [Abstract]
Current portion of installment payment receivables, net	¥ 2,558,756	¥ 1,881,755
Non-current portion of installment payment receivables, net	4,448,416	3,027,795
Total	¥ 7,007,172	¥ 4,909,550

Amount, after allowance for credit loss, of net investment in sales-type lease.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of net investment in sales-type lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-SubTopic 30
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479016/842-30-45-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-SubTopic 30
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479016/842-30-45-2

+ Details

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- Definition

Amount, after allowance for credit loss, of net investment in sales-type lease, classified as noncurrent.

+ References

+ Details

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- References

No definition available.

+ Details

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Balance Type:	na
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- Details

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