Discontinued Operations and Special (Gains) Charges - Special Charges Liabilities (Details) - Lease Liabilities and Other Exit Costs - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 2.8	$ 2.8
Charged to expense	0.2	0.7
Paid or otherwise settled	(0.4)	(0.7)
Ending Balance	$ 2.6	$ 2.8

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 420
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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