XML 71 R56.htm IDEA: XBRL DOCUMENT v3.19.2
Revenue - Construction Segment Contract with Customer, Asset and Liability (Details) - Construction - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Segment Reporting Information [Line Items]    
Contract assets $ 59.7 $ 69.0
Contract liabilities $ (49.6) $ (62.0)