Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation - Accounts Receivable (Details)

v3.20.1
Basis of Presentation - Accounts Receivable (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01
$ in Millions
Sep. 30, 2019
USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]  
Revenue, remaining performance obligation $ 32.1
Revenue,remaining performance obligation, expected timing of satisfaction, period 1 year