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Benefit Plans
6 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
Benefit Plans Benefit Plans
Components of net periodic benefit expense for our pension plans for the three and six months ended June 30, 2025 and 2024 were as follows:
Three months endedSix months ended
In millionsJune 30,
2025
June 30,
2024
June 30,
2025
June 30,
2024
Service cost$0.3 $0.4 $0.6 $0.8 
Interest cost1.0 1.0 2.0 2.0 
Expected return on plan assets(0.2)(0.1)(0.4)(0.2)
Net periodic benefit expense$1.1 $1.3 $2.2 $2.6 
Components of net periodic benefit expense for our other post-retirement plans for the three and six months ended June 30, 2025 and 2024 were not material