Impairment, Restructuring and Other Expense (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring and Impairment [Line Items]
Asset Impairment Charges	$ 2,484.1	$ 1,792.6	$ 34.3
Charges	6.7	38.6	157.2
Restructuring and impairment expense	2,490.8	1,831.2	191.5
Subsea
Restructuring and Impairment [Line Items]
Asset Impairment Charges	1,798.6	1,784.2	11.5
Charges	(46.4)	17.7	88.4
Onshore/Offshore
Restructuring and Impairment [Line Items]
Charges	17.0	(3.4)	27.0
Surface Technologies
Restructuring and Impairment [Line Items]
Asset Impairment Charges	685.5	4.5	10.2
Charges	18.7	9.3	9.0
Corporate and other
Restructuring and Impairment [Line Items]
Asset Impairment Charges		3.9	12.6
Charges	$ 17.4	$ 15.0	$ 32.8

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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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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