Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Property, Plant And Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	$ 5,270.5	$ 5,450.8
Accumulated depreciation	(2,408.7)	(2,288.8)
Property, plant and equipment, net	2,861.8	3,162.0
Depreciation expense	323.5	383.5	$ 367.8
Gain (Loss) on Disposition of Assets		(7.1)
Long Lived Assets Held-for-sale, Name [Domain]
Property, Plant and Equipment [Abstract]
Impairment of Long-Lived Assets to be Disposed of	8.3
Impairment of Long-Lived Assets to be Disposed of	8.3
Land and land improvements
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	88.4	108.4
Buildings
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	611.0	626.9
Vessels
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	1,968.1	2,091.9
Machinery and equipment
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	1,919.4	1,930.6
Office fixtures and furniture
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	292.0	285.0
Construction in process
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	148.1	130.9
Other
Property, Plant and Equipment [Abstract]
Property, plant and equipment, gross	$ 243.5	$ 277.1