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Accumulated Other Comprehensive Loss Attributable to Crown Holdings - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
AOCI Attributable To Parent Net Of Tax [Roll Forward]        
Balance at beginning of period $ 2,932 $ 2,482 $ 2,864 $ 2,287
Total other comprehensive income 13 104    
Balance at end of period 2,932 2,482    
Total        
AOCI Attributable To Parent Net Of Tax [Roll Forward]        
Balance at beginning of period (1,671) (1,789) (1,687) (1,892)
Other comprehensive income before reclassifications 4 90    
Amounts reclassified from accumulated other comprehensive income 12 13    
Total other comprehensive income 16 103    
Balance at end of period (1,671) (1,789)    
Defined benefit plans        
AOCI Attributable To Parent Net Of Tax [Roll Forward]        
Balance at beginning of period (654) (676) (664) (686)
Other comprehensive income before reclassifications 0 0    
Amounts reclassified from accumulated other comprehensive income 10 10    
Total other comprehensive income 10 10    
Balance at end of period (654) (676)    
Foreign currency translation        
AOCI Attributable To Parent Net Of Tax [Roll Forward]        
Balance at beginning of period (1,011) (1,109) (1,022) (1,197)
Other comprehensive income before reclassifications 11 88    
Amounts reclassified from accumulated other comprehensive income 0 0    
Total other comprehensive income 11 88    
Balance at end of period (1,011) (1,109)    
Gains and losses on cash flow hedges        
AOCI Attributable To Parent Net Of Tax [Roll Forward]        
Balance at beginning of period (6) (4) $ (1) $ (9)
Other comprehensive income before reclassifications (7) 2    
Amounts reclassified from accumulated other comprehensive income 2 3    
Total other comprehensive income (5) 5    
Balance at end of period $ (6) $ (4)