Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Accounting Policies Impairments of Long-Lived Assets (Details)

v3.5.0.2
Basis of Presentation and Accounting Policies Impairments of Long-Lived Assets (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Property, Plant and Equipment [Line Items]    
Asset Impairment Charges $ (51.7) $ (6.9)
Offshore Marine Services [Member]    
Property, Plant and Equipment [Line Items]    
Asset Impairment Charges (50.6)  
Cost-method Investments [Member] | Shipping Services Joint Ventures [Member]    
Property, Plant and Equipment [Line Items]    
Asset Impairment Charges $ (6.5)