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Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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REVENUE - Disaggregation of Revenue, Geographical (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Lease revenue	$ 46.6	$ 24.9	$ 79.4	$ 75.9
Total revenue	1,668.8	1,620.2	3,300.8	3,202.8
Services
Disaggregation of Revenue [Line Items]
Revenue	913.4	793.9	1,739.6	1,567.5
Products
Disaggregation of Revenue [Line Items]
Revenue	708.8	801.4	1,481.8	1,559.4
Subsea
Disaggregation of Revenue [Line Items]
Revenue	1,394.3	1,378.5	2,780.8	2,631.6
Lease revenue	16.1	10.3	27.4	29.8
Subsea \| Services
Disaggregation of Revenue [Line Items]
Revenue	875.1	764.2	1,668.5	1,481.7
Subsea \| Products
Disaggregation of Revenue [Line Items]
Revenue	503.1	604.0	1,084.9	1,120.1
Subsea \| Europe, Russia, Central Asia
Disaggregation of Revenue [Line Items]
Revenue	414.6	422.8	679.7	853.3
Subsea \| North America
Disaggregation of Revenue [Line Items]
Revenue	190.4	224.3	419.7	419.8
Subsea \| Latin America
Disaggregation of Revenue [Line Items]
Revenue	263.9	296.7	598.2	545.8
Subsea \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	250.1	187.7	491.9	326.4
Subsea \| Africa
Disaggregation of Revenue [Line Items]
Revenue	270.5	166.5	562.7	383.6
Subsea \| Middle East
Disaggregation of Revenue [Line Items]
Revenue	4.8	80.5	28.6	102.7
Surface Technologies
Disaggregation of Revenue [Line Items]
Revenue	274.5	241.7	520.0	571.2
Lease revenue	30.5	14.6	52.0	46.1
Surface Technologies \| Services
Disaggregation of Revenue [Line Items]
Revenue	38.3	29.7	71.1	85.8
Surface Technologies \| Products
Disaggregation of Revenue [Line Items]
Revenue	205.7	197.4	396.9	439.3
Surface Technologies \| Europe, Russia, Central Asia
Disaggregation of Revenue [Line Items]
Revenue	55.1	49.6	98.9	102.4
Surface Technologies \| North America
Disaggregation of Revenue [Line Items]
Revenue	92.8	76.6	167.3	228.9
Surface Technologies \| Latin America
Disaggregation of Revenue [Line Items]
Revenue	17.2	15.3	35.1	39.8
Surface Technologies \| Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	26.8	30.3	51.3	65.1
Surface Technologies \| Africa
Disaggregation of Revenue [Line Items]
Revenue	13.1	14.5	22.7	28.6
Surface Technologies \| Middle East
Disaggregation of Revenue [Line Items]
Revenue	69.5	55.4	144.7	106.4
Operating Segments \| Subsea
Disaggregation of Revenue [Line Items]
Total revenue	1,394.3	1,378.5	2,780.8	2,631.6
Operating Segments \| Surface Technologies
Disaggregation of Revenue [Line Items]
Total revenue	$ 274.5	$ 241.7	$ 520.0	$ 571.2