Pension and other postretirement benefits (Tables)

3 Months Ended

Mar. 31, 2026

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The components of net periodic benefit cost recognized in the Condensed Consolidated Statements of Income for the Pension and Other Postretirement Benefit (OPEB) Plans were:

	U.S.		Non-U.S.
	Three months ended		Three months ended
	March 31		March 31
in $ millions	2026	2025	2026	2025
Service cost	–	–	9	10
Interest cost	6	6	23	20
Expected return on assets	(6)	(5)	(26)	(23)
Amortization of:
Prior service credit	–	–	(3)	(3)
Actuarial loss	–	–	1	1
Net periodic benefit cost (i) (ii)	–	1	4	5

(i) Includes net periodic benefit cost of $1 million and $1 million related to OPEB plans for the three months ended March 31, 2026 and March 31, 2025, respectively.

(ii) Service cost is included within Cost of revenues and Selling, general and administrative expenses while all other cost components are recorded within Other nonoperating expense, net.