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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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IMPAIRMENT, RESTRUCTURING AND OTHER EXPENSES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring and Impairment
Impairment of Leasehold			$ 19.6
Total impairments	$ 1.3	$ 23.0	20.9	$ 3,244.7
COVID-19 expenses		21.1		57.8
Magma Global Limited
Restructuring and Impairment
Impairment to adjust our equity method investment	36.7		36.7
Property, Plant and Equipment
Restructuring and Impairment
Total impairments				161.3
Subsea
Restructuring and Impairment
Total impairments	1.3	17.6	17.6	2,826.6
Impairments		2,747.5
COVID-19 expenses		18.7		50.1
Subsea \| Property, Plant and Equipment
Restructuring and Impairment
Other asset impairment charges		17.6		79.1
Surface Technologies
Restructuring and Impairment
Total impairments	$ 0.0	5.4	$ 0.3	418.1
Impairments				335.9
COVID-19 expenses		2.4		7.7
Surface Technologies \| Property, Plant and Equipment
Restructuring and Impairment
Other asset impairment charges		$ 5.4		$ 82.2