v3.26.1
Parent Company Only Condensed Financial Information - Condensed balance sheets (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Current assets:          
Cash and cash equivalents ¥ 56,691,765 $ 8,106,815 ¥ 65,901,123    
Time deposits and short-term investments 44,331,407 6,339,307 46,904,548    
Prepayments and other current assets 5,174,246 739,907 5,176,546    
Total current assets 115,285,994 16,485,677 126,309,782    
Noncurrent assets:          
Longterm investments 848,672 121,358 922,897    
Property, plant and equipment, net 22,774,938 3,256,773 21,140,933    
Total noncurrent assets 39,009,824 5,578,330 36,039,296    
Total assets 154,295,818 22,064,007 162,349,078    
Current liabilities:          
Short-term borrowings 6,217,745 889,126 281,102    
Amounts due to related parties ¥ 26,644 $ 3,810 ¥ 11,492    
Other Liability, Current, Related Party, Type [Extensible Enumeration] us-gaap:RelatedPartyMember us-gaap:RelatedPartyMember us-gaap:RelatedPartyMember    
Accruals and other current liabilities ¥ 13,412,260 $ 1,917,924 ¥ 12,397,322    
Total current liabilities 63,547,653 9,087,190 69,215,896    
Noncurrent liabilities:          
Long-term borrowings 3,299,203 471,780 8,151,598    
Total noncurrent liabilities 17,608,422 2,517,972 21,812,800    
Total liabilities 81,156,075 11,605,162 91,028,696    
SHAREHOLDERS' EQUITY          
Treasury shares (73) (10) (74)    
Additional paid-in capital 61,399,973 8,780,079 60,126,623    
Accumulated other comprehensive loss (825,180) (117,999) (171,748)    
Retained earnings 11,176,357 1,598,198 10,160,161    
Total shareholders' equity 72,619,255 10,384,416 70,874,884    
Total liabilities and shareholders' equity 154,295,818 22,064,007 162,349,078    
Class A Ordinary Shares          
SHAREHOLDERS' EQUITY          
Ordinary Shares 1,229 176 1,215    
Class B Ordinary Shares          
SHAREHOLDERS' EQUITY          
Ordinary Shares 235 $ 34 235    
Parent company | Reportable legal entity          
Current assets:          
Cash and cash equivalents 3,949,313   4,943,339 ¥ 1,121,233 ¥ 974,224
Time deposits and short-term investments 0   2,613,125    
Amounts due from subsidiaries of the Group ¥ 50,309,768   ¥ 49,408,573    
Other Receivable, after Allowance for Credit Loss, Current, Related Party, Type [Extensible Enumeration] Affiliated Entity [Member] Affiliated Entity [Member] Affiliated Entity [Member]    
Prepayments and other current assets ¥ 7,416   ¥ 23,955    
Total current assets 54,266,497   56,988,992    
Noncurrent assets:          
Investments in subsidiaries 24,338,730   20,111,191    
Longterm investments 14,890   45,799    
Property, plant and equipment, net 1   2    
Total noncurrent assets 24,353,621   20,156,992    
Total assets 78,620,118   77,145,984    
Current liabilities:          
Short-term borrowings 5,982,366   0    
Amounts due to related parties ¥ 3,549   ¥ 3,721    
Other Liability, Current, Related Party, Type [Extensible Enumeration] Affiliated Entity [Member] Affiliated Entity [Member] Affiliated Entity [Member]    
Accruals and other current liabilities ¥ 14,948   ¥ 12,482    
Total current liabilities 6,000,863   16,203    
Noncurrent liabilities:          
Long-term borrowings 0   6,254,897    
Total noncurrent liabilities 0   6,254,897    
Total liabilities 6,000,863   6,271,100    
SHAREHOLDERS' EQUITY          
Treasury shares (73)   (74)    
Additional paid-in capital 61,399,973   60,126,623    
Accumulated other comprehensive loss (825,180)   (171,748)    
Retained earnings 12,043,071   10,918,633    
Total shareholders' equity 72,619,255   70,874,884    
Total liabilities and shareholders' equity 78,620,118   77,145,984    
Parent company | Reportable legal entity | Class A Ordinary Shares          
SHAREHOLDERS' EQUITY          
Ordinary Shares 1,229   1,215    
Parent company | Reportable legal entity | Class B Ordinary Shares          
SHAREHOLDERS' EQUITY          
Ordinary Shares ¥ 235   ¥ 235