Acquisitions, Litigation, and Other Charges Acquisitions, Litigation, and Other Charges - Narrative (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Accelerated equity award vesting	$ 3.1	$ 3.1
Reduction in Headcount from Cloverleaf Acquisition
Restructuring Cost and Reserve [Line Items]
Severance		2.6
Departure of Former Executives
Restructuring Cost and Reserve [Line Items]
Severance		$ 1.2
Number of departed executives \| employee		2

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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-Name Accounting Standards Codification
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