Revenue from Contracts with Customers, Performance Obligations (Details) $ in Millions	Sep. 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	$ 168.0
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	$ 72.9
Remaining performance obligation, expected timing of satisfaction, period