v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 27, 2026
Disclosure of analysis of other comprehensive income by item [line items]          
Exchange ratio, exchangeable shares         1
Beginning balance     $ 15,311 $ 17,308  
Other comprehensive income (loss) $ (30) $ 652 76 838  
Ending balance 15,439 15,321 15,439 15,321  
Class A shareholders          
Disclosure of analysis of other comprehensive income by item [line items]          
Beginning balance     5,451 5,117  
Other comprehensive income (loss)     35 416  
Ending balance 5,431 5,426 5,431 5,426  
Foreign currency translation | Class A shareholders          
Disclosure of analysis of other comprehensive income by item [line items]          
Beginning balance     (656) (984)  
Other comprehensive income (loss)     3 334  
Ending balance (653) (650) (653) (650)  
FVOCI | Class A shareholders          
Disclosure of analysis of other comprehensive income by item [line items]          
Beginning balance     281 62  
Other comprehensive income (loss)     9 226  
Ending balance 290 288 290 288  
Other | Class A shareholders          
Disclosure of analysis of other comprehensive income by item [line items]          
Beginning balance     172 264  
Other comprehensive income (loss)     23 (144)  
Ending balance 195 120 195 120  
Accumulated other comprehensive income (loss) | Class A shareholders          
Disclosure of analysis of other comprehensive income by item [line items]          
Beginning balance [1]     (203) (658)  
Other comprehensive income (loss) [1]     35 416  
Ending balance [1] $ (168) $ (242) $ (168) $ (242)  
[1] See Note 21 for additional information.