Employee Benefit Obligations - Components of net periodic benefit cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Selling, general and administrative
Ball-sponsored plans:
Non-service pension income	$ 9	$ 10
Defined Benefit Pension Plans
Ball-sponsored plans:
Service cost	25	24
Interest cost	26	22
Expected return on plan assets	(44)	(47)
Amortization of prior service cost	1	1
Recognized net actuarial loss	8	14
Total net periodic benefit cost	16	14
Contributions to pension plans	104	162
Expected contributions to pension plans for the full year	127
United States | Defined Benefit Pension Plans
Ball-sponsored plans:
Service cost	22	21
Interest cost	13	13
Expected return on plan assets	(27)	(31)
Recognized net actuarial loss	7	13
Total net periodic benefit cost	15	16
Non U.S. | Defined Benefit Pension Plans
Ball-sponsored plans:
Service cost	3	3
Interest cost	13	9
Expected return on plan assets	(17)	(16)
Amortization of prior service cost	1	1
Recognized net actuarial loss	1	1
Total net periodic benefit cost	$ 1	$ (2)