v3.26.1
Financial Instruments - Celsius and Other AFS (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 13, 2026
Jun. 14, 2025
Jun. 13, 2026
Jun. 14, 2025
Mar. 21, 2026
Dec. 27, 2025
Mar. 22, 2025
Dec. 28, 2024
Celsius & Other AFS                
Impairment Losses, Investments, Available-for-Sale Securities1     $ 0 $ 0        
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax $ 473 $ 526 473 526        
Total, AFS debt securities                
Celsius & Other AFS                
Debt Securities, Available-for-Sale 1,712 1,219 1,712 1,219        
Other, AFS debt securities                
Celsius & Other AFS                
Fair Value, Recurring Basis, Unobservable Input Reconciliation, Asset (Liability), Gain (Loss), OCI $ 17 19 $ (16) 5        
Significant unobservable input used in level 3 fair value measurement - Other AFS, discount rate assumption 8.30%   8.30%     8.30%    
Debt Securities, Available-for-Sale $ 259 261 $ 259 261 $ 242 $ 275 $ 242 $ 256
Celsius, AFS debt security                
Celsius & Other AFS                
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) $ (14) (7) $ (28) (14)        
Significant unobservable input used in level 3 fair value measurement - Celsius 8.90%   8.90%     8.50%    
Significant unobservable input used in level 3 fair value measurement - Celsius, probability assumption 80.00%   80.00%     80.00%    
Fair Value, Recurring Basis, Unobservable Input Reconciliation, Asset (Liability), Gain (Loss), OCI $ (289) 77 $ (371) 187        
Debt Securities, Available-for-Sale $ 1,453 $ 958 $ 1,453 $ 958 $ 1,756 $ 1,852 $ 888 $ 785