v3.26.1
Company Financial Statements (Parent Company Only) - Consolidated Statement of Cash Flows (Detail) - CNY (¥)
¥ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Condensed Financial Statements, Captions [Line Items]      
Cash flows from operating activities ¥ 8,258,529 ¥ (2,012,343) ¥ 956,164
Cash flows from investing activities      
Maturity (placement) of term deposits 1,206,328 (2,984,153) 5,441,363
Cash paid for long-term investments (103,016) (144,237) (188,681)
Disposal of long-term investments 82,357 0 0
Net cash used in investing activities (7,334,482) (1,255,099) 631,168
Cash flows from financing activities      
Net cash provided by financing activities 514,760 669,321 8,015,247
Effects of exchange rate changes on cash, cash equivalents and restricted cash 222,632 35,736 (14,576)
Net increase (decrease) in cash, cash equivalents and restricted cash 1,661,439 (2,562,385) 9,588,003
Cash, cash equivalents and restricted cash at beginning of the year 21,739,664 24,302,049 14,714,046
Cash, cash equivalents and restricted cash at end of the year 23,401,103 21,739,664 24,302,049
Parent [Member]      
Condensed Financial Statements, Captions [Line Items]      
Cash flows from operating activities 602,382 683,003 520,066
Cash flows from investing activities      
Maturity (placement) of term deposits 1,140,950 (1,961,056) 4,164,149
Investment in equity investees (2,215,607) (2,257,875) (5,306,987)
Cash paid for long-term investments (103,434) (144,192) (188,681)
Disposal of long-term investments 28,571    
Net cash used in investing activities (1,149,520) (4,363,123) (1,331,519)
Cash flows from financing activities      
Proceeds from issuance of ordinary shares to Volkswagen 0 0 5,019,599
Net cash provided by financing activities 0 0 5,019,599
Effects of exchange rate changes on cash, cash equivalents and restricted cash 63,717 143,808 27,795
Net increase (decrease) in cash, cash equivalents and restricted cash (483,421) (3,536,312) 4,235,941
Cash, cash equivalents and restricted cash at beginning of the year 1,651,285 5,187,597 951,656
Cash, cash equivalents and restricted cash at end of the year ¥ 1,167,864 ¥ 1,651,285 ¥ 5,187,597