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Retirement Benefits
 6 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Retirement Benefits Retirement Benefits
The following table presents the components of net periodic pension cost and amounts recognized in other comprehensive income (loss) for our pension plans:
Three Months EndedSix Months Ended
June 30,June 30,
(in millions)2024202320242023
Components of net periodic pension cost:
Interest cost$0.2 $0.5 $0.5 $1.1 
Expected return on plan assets(0.2)(0.7)(0.6)(1.4)
Net periodic pension cost$— $(0.2)$(0.1)$(0.3)

In the six months ended June 30, 2024, we contributed $0.2 million to our defined benefit pension plans. In connection with the Transaction, we sold the Outfront Media Canada LP pension plan. We do not expect to make any additional contributions to our remaining defined benefit pension plan in the U.S. during the remainder of 2024.