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Pension
 9 Months Ended
Sep. 30, 2025
Retirement Benefits [Abstract]  
Pension Pension
The components of net periodic benefit cost for our U.S. and foreign defined benefit pension plans for the quarters and nine months ended September 30, 2025 and 2024, are as follows:
 Quarters Ended September 30,Nine Months Ended September 30,
 Pension BenefitsPension Benefits
 2025202420252024
 (in millions)
Service cost$— $0.1 $0.2 $0.3 
Interest cost1.6 3.2 4.8 9.6 
Expected return on plan assets(1.5)(3.5)(4.3)(10.6)
Amortization of net loss0.6 0.4 1.8 1.2 
Net periodic benefit cost$0.7 $0.2 $2.5 $0.5 

We do not anticipate making any contributions to our U.S. defined benefit pension plan in calendar year 2025.
In the second quarter of 2024, Enpro initiated a plan to terminate and settle its remaining defined benefit pension plan in the United States. The termination and settlement process for this frozen plan, which preserves retirement benefits due to participants but changes the ultimate payor of such benefits, was completed in the fourth quarter of 2025. At September 30, 2025, approximately $2.6 million of pension liabilities is recorded in accrued expenses on our consolidated balance sheet and $77 million of pretax losses related to this pension plan is included in accumulated other comprehensive loss on our consolidated balance sheet.

As described in Note 16, "Subsequent Events," in October 2025, we entered into an agreement to settle and terminate our remaining defined benefit pension plan in the United States.

Tables showing the changes in accumulated other comprehensive income (loss) and the balance at September 30, 2025 are included in Note 13, "Accumulated Other Comprehensive Income (Loss)".