Other Nonoperating Income, Net

6 Months Ended

Jun. 30, 2021

Other Income And Expenses [Abstract]

Other Nonoperating Income, Net

15. Other Nonoperating Income, Net

For the three and six months ended June 30, 2021, the increase in other nonoperating income, net, was primarily attributable to lower pension expense of $4.6 million and $7.8 million, respectively, compared with the prior-year periods. For the six months ended June 30, 2020, other nonoperating (income) and expenses, net, included $5.6 million of third-party railroad track maintenance expense.