v3.26.1
Postretirement benefits (Tables)
3 Months Ended
Mar. 31, 2026
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
Components of net periodic benefit income
Postretirement benefit income is included in other income, net on the consolidated statements of comprehensive income and consisted of the following components:
Quarter Ended
March 31,
(in millions)20262025
Expected return on plan assets$2.4 $2.1 
Amortization of prior service credit0.4 0.4 
Interest cost(0.3)(0.4)
Amortization of net actuarial losses— (0.2)
Net periodic benefit income$2.5 $1.9