v3.26.1
Employee Benefit Obligations - Components of net periodic benefit cost (Details) - Defined Benefit Pension Plans - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Ball-sponsored plans:    
Service cost $ 3 $ 4
Interest cost $ 35 $ 36
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Selling, General and Administrative Expense Selling, General and Administrative Expense
Expected return on plan assets $ (41) $ (41)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Selling, General and Administrative Expense Selling, General and Administrative Expense
Amortization of prior service cost $ 1 $ 1
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration] Selling, General and Administrative Expense Selling, General and Administrative Expense
Recognized net actuarial loss $ 5 $ 5
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Immediate Recognition of Actuarial Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Selling, General and Administrative Expense Selling, General and Administrative Expense
Total net periodic benefit cost $ 3 $ 5
U.S.    
Ball-sponsored plans:    
Service cost 3 4
Interest cost 12 14
Expected return on plan assets (19) (20)
Recognized net actuarial loss 1 1
Total net periodic benefit cost (3) (1)
Non-U.S.    
Ball-sponsored plans:    
Interest cost 23 22
Expected return on plan assets (22) (21)
Amortization of prior service cost 1 1
Recognized net actuarial loss 4 4
Total net periodic benefit cost $ 6 $ 6