Revenue from Contracts with Customers, Performance Obligations (Details) $ in Millions	Jun. 30, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Performance Obligation [Abstract]
Remaining performance obligation amount	$ 178.2
Remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Revenue, Performance Obligation [Abstract]
Remaining performance obligation amount	$ 88.1
Remaining performance obligation, expected timing of satisfaction, period