Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2022

Commitments And Contingencies Disclosure [Abstract]

Change in Accrued Environmental Remediation and Related Costs

The table below presents a summary of the activity in our accrued environmental costs during the first three months of 2022.

	Amount
	(In millions)
Balance at the beginning of the period	$	97.6
Additions charged to expense, net		.3
Payments, net		(.3)
Balance at the end of the period	$	97.6
Amounts recognized in the Consolidated Balance Sheet at the end of the period:
Current liabilities	$	3.5
Noncurrent liabilities		94.1
Total	$	97.6