v3.26.1
Bank borrowings - General (Details)
¥ in Millions, $ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
Nov. 30, 2025
Sep. 30, 2025
USD ($)
Jan. 31, 2025
USD ($)
Mar. 31, 2026
CNY (¥)
Mar. 31, 2025
CNY (¥)
Mar. 31, 2026
USD ($)
Bank borrowings              
Current bank borrowings         ¥ 28,224 ¥ 22,562 $ 4,092
Non-current bank borrowings         47,450 49,909 6,879
Bank loans              
Bank borrowings              
Current bank borrowings         28,224 22,562  
Bank loans | Revolving Credit Facility              
Bank borrowings              
Repayment of outstanding balance | $ $ 3,170            
Unutilized commitment of the facility | $             $ 2,600
Bank borrowings              
Bank borrowings              
Non-current bank borrowings         47,450 49,909  
Collateral amount pledged         19,975 30,213  
Short-term other borrowings | Bank loans              
Bank borrowings              
Current bank borrowings         24,324 22,562  
Ancillary facility | Bank loans              
Bank borrowings              
Outstanding borrowing amount         3,900    
Syndicated Loan [Member] | Bank loans              
Bank borrowings              
Repayment amount | $       $ 830      
Syndicated Loan [Member] | Bank loans | Revolving Credit Facility              
Bank borrowings              
Current bank borrowings         3,900 0  
Non-current bank borrowings         0 22,937  
Syndicated Loan [Member] | Bank loans | Minimum              
Bank borrowings              
Non-current bank borrowings | $       3,170      
Syndicated Loan [Member] | Bank loans | Maximum              
Bank borrowings              
Non-current bank borrowings | $       $ 4,000      
Syndicated Loan [Member] | Bank loans | SOFR              
Bank borrowings              
Spread over variable rate   0.66%          
Syndicated Loan [Member] | Bank loans | SOFR | Minimum              
Bank borrowings              
Spread over variable rate     0.66%        
Syndicated Loan [Member] | Bank loans | SOFR | Maximum              
Bank borrowings              
Spread over variable rate     0.80%        
Syndicated Loan [Member] | Bank loans | SOFR | September 30, 2030              
Bank borrowings              
Spread over variable rate   0.81%          
Long-term other borrowings | Bank loans              
Bank borrowings              
Non-current bank borrowings         ¥ 47,450 ¥ 26,972  
Long-term borrowings | Bank loans              
Bank borrowings              
Weighted average interest rate for the year         2.50% 3.90%  
Short-term borrowings | Bank loans              
Bank borrowings              
Weighted average interest rate for the year         1.50% 2.00%  
Short-term borrowings | Bank loans | Minimum              
Bank borrowings              
Interest rates         0.60% 0.80% 0.60%
Short-term borrowings | Bank loans | Maximum              
Bank borrowings              
Interest rates         9.20% 4.80% 9.20%
USD6.5 billion revolving credit facility agreement | Bank facility              
Bank borrowings              
Amount of loan facility | $     $ 6,500        
USD6.5 billion revolving credit facility agreement | Bank facility | SOFR              
Bank borrowings              
Spread over variable rate     0.80%        
USD 3.33 billion loan facility agreement | Bank loans | HIBOR | June 24, 2026 to September 30, 2028              
Bank borrowings              
Spread over variable rate     0.81%        
USD 3.33 billion loan facility agreement | Bank facility              
Bank borrowings              
Amount of loan facility | $     $ 3,330        
USD 3.33 billion loan facility agreement | Bank facility | HIBOR              
Bank borrowings              
Spread over variable rate     0.66%