Commiments and Contingencies Commiments and Contingencies (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Total contingencies	$ 13.0	$ 13.0
Accrual for Environmental Loss Contingencies, Gross	14.0	14.0
Current portion (included in Accrued liabilities)	(1.0)	(1.0)
Long-term portion (included in Other long-term liabilities)	13.0	13.0
Environmental reserves
Loss Contingencies [Line Items]
Total contingencies	14.0	14.0
Other reserves
Loss Contingencies [Line Items]
Total contingencies	$ 0.0	$ 0.0

Undiscounted amount of the accrual for environmental loss contingencies.

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-Publisher FASB
-Name Accounting Standards Codification
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