v3.26.3
Accumulated Other Comprehensive Loss Attributable to Crown Holdings (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]                    
Balance at beginning of period $ 3,461 $ 3,366 $ 3,412 $ 3,499 $ 3,372 $ 3,172 $ 3,461 $ 3,499 $ 3,480 $ 3,228
Total other comprehensive income / (loss), net of tax (46) 37 (17) 28 43 (35) (26) 36    
Balance at end of period 3,461 3,366 3,412 3,499 3,372 3,172 3,461 3,499    
Total                    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]                    
Balance at beginning of period (1,406) (1,359) (1,399) (1,427) (1,456) (1,497) (1,406) (1,427) (1,382) (1,462)
Other comprehensive income / (loss) before reclassifications             (9) 32    
Amounts reclassified from accumulated other comprehensive income             (15) 3    
Total other comprehensive income / (loss), net of tax (47) 40 (17) 29 41 (35) (24) 35    
Balance at end of period (1,406) $ (1,359) $ (1,399) (1,427) $ (1,456) $ (1,497) (1,406) (1,427)    
Defined benefit plans                    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]                    
Balance at beginning of period (229)     (224)     (229) (224) (228) (230)
Other comprehensive income / (loss) before reclassifications             (6) (1)    
Amounts reclassified from accumulated other comprehensive income             5 7    
Total other comprehensive income / (loss), net of tax             (1) 6    
Balance at end of period (229)     (224)     (229) (224)    
Foreign currency translation                    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]                    
Balance at beginning of period (1,180)     (1,211)     (1,180) (1,211) (1,169) (1,236)
Other comprehensive income / (loss) before reclassifications             (11) 25    
Amounts reclassified from accumulated other comprehensive income             0 0    
Total other comprehensive income / (loss), net of tax             (11) 25    
Balance at end of period (1,180)     (1,211)     (1,180) (1,211)    
Gains and losses on cash flow hedges                    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]                    
Balance at beginning of period 3     8     3 8 $ 15 $ 4
Other comprehensive income / (loss) before reclassifications             8 8    
Amounts reclassified from accumulated other comprehensive income             (20) (4)    
Total other comprehensive income / (loss), net of tax             (12) 4    
Balance at end of period $ 3     $ 8     $ 3 $ 8