Other Non-Current Liabilities - Summary of Other Non-Current Liabilities (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Liabilities, Noncurrent [Abstract]
Debt from third party investors	¥ 1,316,206	¥ 1,276,145
Warranty provisions	809,437	789,005	¥ 424,802
Deposits from a third party	118,310	148,991
Government grants	201,823	122,513
Total	¥ 2,445,776	¥ 2,336,654

Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid after one year or beyond the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-8

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (c)(5)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-8

Name:	us-gaap_StandardProductWarrantyAccrualNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant