Commitments and Contingencies Purchase obligations (Details) $ in Millions	9 Months Ended
Sep. 30, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Outstanding purchase commitments	$ 9.8
Purchase commitment	$ 3.8

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

No definition available.