v3.26.3
Employee Benefit Obligations - Components of net periodic benefit cost (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2026
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Ball-sponsored plans:          
Settlement losses and other one-time charges   $ 475   $ 475  
Defined Benefit Pension Plans          
Ball-sponsored plans:          
Service cost   3 $ 4 9 $ 11
Interest cost   $ 20 $ 37 $ 90 $ 111
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 Selling, General and Administrative Expense Selling, General and Administrative Expense
Expected return on plan assets   $ (27) $ (42) $ (108) $ (125)
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 Selling, General and Administrative Expense Selling, General and Administrative Expense
Amortization of prior service cost   $ 1 $ 1 $ 2 $ 2
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 Selling, General and Administrative Expense Selling, General and Administrative Expense
Settlement losses and other one-time charges $ 475 $ 475   $ 475  
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement and Curtailment Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Restructuring and Other Activities Selling, General and Administrative Expense   Selling, General and Administrative Expense  
Recognized net actuarial loss   $ 3 $ 5 $ 13 $ 15
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 Selling, General and Administrative Expense Selling, General and Administrative Expense
Total net periodic benefit cost   $ 475 $ 5 $ 481 $ 14
U.S. | Defined Benefit Pension Plans          
Ball-sponsored plans:          
Service cost   3 4 9 11
Interest cost   12 14 37 43
Expected return on plan assets   (19) (20) (57) (59)
Recognized net actuarial loss   1 1 2 2
Total net periodic benefit cost   (3) (1) (9) (3)
Non-U.S. | Defined Benefit Pension Plans          
Ball-sponsored plans:          
Interest cost   8 23 53 68
Expected return on plan assets   (8) (22) (51) (66)
Amortization of prior service cost   1 1 2 2
Settlement losses and other one-time charges   475   475  
Recognized net actuarial loss   2 4 11 13
Total net periodic benefit cost   $ 478 $ 6 $ 490 $ 17