Asset Impairment and Restructuring (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($) employee	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($) employee
Asset Impairment and Restructuring
Severance Costs \| $	$ 0.0	$ 7.4	$ 0.0	$ 13.3
Number of corporate staff accepted voluntary separation package				53
Number of Employees accepted voluntary separation package		201		201

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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