Restructuring and Restructuring Related Charges (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2020 USD ($)
COVID-19
Restructuring Cost and Reserve [Line Items]
Severance and other restructuring costs	$ 6.5

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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