Accounts and Notes Receivable (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Miscellaneous receivables from sale of idled plant	$ 33.5	$ 5.0
Unallocated Corporate [Member]
Accounts Notes And Loans Receivable [Line Items]
Miscellaneous receivables from sale of idled plant	$ 20.8

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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