Employees

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Employees

Employees

Postretirement Benefits

The net periodic (benefit) cost for our postretirement benefit plans was not material for the three and six months ended June 30, 2020 or 2019. Additionally, our estimated contributions to our pension plans during 2020 have not changed significantly from amounts previously disclosed in the notes to the consolidated financial statements for the year ended December 31, 2019.