Annual report pursuant to Section 13 and 15(d)

Postretirement Benefits Contributions, Benefit Payments and Other (Details)

v3.20.4
Postretirement Benefits Contributions, Benefit Payments and Other (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Pension Plans [Member]  
Expected Benefit Payments [Abstract]  
Company Contributions Expected to be Made in 2017 $ 3.0
2019 3.0
2020 2.8
2021 2.7
2022 2.3
2023 2.2
2024-2028 9.0
Other Postretirement Benefit Plans [Member]  
Expected Benefit Payments [Abstract]  
Company Contributions Expected to be Made in 2017 3.1
2019 3.1
2020 3.0
2021 2.8
2022 2.6
2023 2.5
2024-2028 $ 10.3