v3.26.1
Retirement benefits (Tables)
 3 Months Ended
Mar. 31, 2026
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
The components of net periodic pension cost (credit) for our pension plans were as follows:
U.S. PlansNon-U.S. PlansTotal
(In millions)202620252026202520262025
Three months ended March 31,      
Service cost$— — 2.4 2.0 2.4 2.0 
Interest cost on projected benefit obligation7.4 7.9 5.0 4.2 12.4 12.1 
Return on assets – expected(9.4)(11.1)(3.0)(2.7)(12.4)(13.8)
Amortization of losses2.4 1.3 1.0 0.6 3.4 1.9 
Amortization of prior service cost— — — 0.1 — 0.1 
Settlement loss— — — 0.3 — 0.3 
Net periodic pension cost (credit)
$0.4 (1.9)5.4 4.5 5.8 2.6 
Schedule of Costs of Retirement Plans
The components of net periodic postretirement cost (credit) related to retirement benefits other than pensions were as follows:
UMWA PlansBlack Lung and Other PlansTotal
(In millions)202620252026202520262025
Three months ended March 31,      
Service cost$— — 0.1 — 0.1 — 
Interest cost on accumulated postretirement benefit obligations2.4 2.3 1.0 1.1 3.4 3.4 
Return on assets – expected(2.4)(2.4)— — (2.4)(2.4)
Amortization of losses0.5 0.3 0.7 0.9 1.2 1.2 
Amortization of prior service cost (credit)
(1.4)(2.6)— — (1.4)(2.6)
Net periodic postretirement cost (credit)
$(0.9)(2.4)1.8 2.0 0.9 (0.4)