Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation - Accounts Receivable (Details)

v3.10.0.1
Basis of Presentation - Accounts Receivable (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-10-01
$ in Millions
Sep. 30, 2018
USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]  
Revenue, remaining performance obligation $ 27.8
Expected timing of satisfaction, period 2 months