v3.25.1
Parent Company Only Condensed Financial Information - Condensed statements of cash flows (Details)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
CASH FLOWS FROM OPERATING ACTIVITIES        
Net cash provided by operating activities ¥ 15,933,160 $ 2,182,834 ¥ 50,693,521 ¥ 7,380,266
CASH FLOWS FROM INVESTING ACTIVITIES        
Placement of time deposits (54,650,166) (7,487,042) (19,107,879) (679,486)
Redemption of time deposits 24,675,649 3,380,550 9,201,713 514,242
Placement of short-term investments (12,864,520) (1,762,432) (14,820,000) (58,268,079)
Redemption of short-term investments 8,450,000 1,157,645 31,135,501 59,953,714
Purchase of property, plant and equipment and intangible assets (7,730,022) (1,059,009) (6,507,190) (5,127,899)
Net cash used in investing activities (41,137,169) (5,635,769) (12,068) (4,364,661)
CASH FLOWS FROM FINANCING ACTIVITIES        
Proceeds from borrowings 471,322 64,571 1,750,194 3,741,482
Net cash provided by/(used in) financing activities (415,648) (56,944) 185,385 5,639,392
Effects of exchange rate changes on cash, cash equivalents and restricted cash 198,120 27,143 44,513 1,270,097
Net change in cash, cash equivalents and restricted cash (25,421,537) (3,482,736) 50,911,351 9,925,094
Cash, cash equivalents and restricted cash at beginning of the year 91,329,030      
Cash, cash equivalents and restricted cash at end of the year 65,901,123 $ 9,028,417 91,329,030  
Parent company | Reportable legal entity        
CASH FLOWS FROM OPERATING ACTIVITIES        
Net cash provided by operating activities 205,249   56,515 450,517
CASH FLOWS FROM INVESTING ACTIVITIES        
Net cash (used in)/provided by inter-company transactions 6,751,926   (3,589,329) (23,397,234)
Placement of time deposits (2,179,080)      
Redemption of time deposits     2,137,626  
Placement of short-term investments (364,515)   0 (2,609,767)
Redemption of short-term investments 0   0 8,036,663
Purchase of property, plant and equipment and intangible assets 0   0 (25)
Net cash used in investing activities 4,208,331   (1,451,703) (17,970,363)
CASH FLOWS FROM FINANCING ACTIVITIES        
Proceeds from borrowings 0   699,300 669,913
Repayment of borrowings (700,000)   (338,020) (349,163)
Proceeds from exercise of share options 14,658   11,953 6,728
Proceeds from issuance of ordinary shares     1,174,319 2,462,300
Net cash provided by/(used in) financing activities (685,342)   1,547,552 2,789,778
Effects of exchange rate changes on cash, cash equivalents and restricted cash 93,868   (5,355) 941,417
Net change in cash, cash equivalents and restricted cash 3,822,106   147,009 (13,788,651)
Cash, cash equivalents and restricted cash at beginning of the year 1,121,233   974,224 14,762,875
Cash, cash equivalents and restricted cash at end of the year ¥ 4,943,339   ¥ 1,121,233 ¥ 974,224