XML 62 R45.htm IDEA: XBRL DOCUMENT v3.19.1
Revenue - Significant Changes in Contract Liabilities (Details)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Contract With Customer, Asset (Liability) [Roll Forward]  
Beginning balance $ (1.1)
Payments received / amounts billed (0.1)
Costs incurred / revenue recognized 0.4
Ending balance $ (0.8)