Property, Plant And Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	$ 5,819.4	$ 4,311.9
Accumulated depreciation	(1,947.9)	(1,691.8)
Property, plant and equipment, net	3,871.5	2,620.1
Depreciation expense	370.2	283.2	$ 315.3
Land and land improvements
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	105.2	17.3
Buildings
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	691.2	337.5
Vessels
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	2,246.0	1,921.7
Machinery and equipment
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	1,892.2	1,056.6
Office fixtures and furniture
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	350.4	292.0
Construction in process
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	136.7	310.5
Other
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	$ 397.7	$ 376.3