XML 53 R40.htm IDEA: XBRL DOCUMENT v3.21.1
Employee Retirement Plans (Tables)
3 Months Ended
Mar. 31, 2021
Retirement Benefits [Abstract]  
Schedule of Components of Net Pension Income
The components of net pension income for the three months ended March 31, 2021 and 2020, were as follows:
Three Months Ended March 31,
20212020
Interest cost$(2.1)$(3.4)
Expected return on plan assets6.2 6.1 
Net pension income$4.1 $2.7