REVENUE - Disaggregation of revenue, geographical (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Lease	$ 215.1	$ 158.4	$ 142.0
Total revenue	6,700.4	6,403.5	6,530.6
Service revenue
Disaggregation of Revenue [Line Items]
Product and service revenue	3,628.3	3,440.7	3,266.8
Product revenue
Disaggregation of Revenue [Line Items]
Product and service revenue	2,857.0	2,804.4	3,121.8
Subsea
Disaggregation of Revenue [Line Items]
Lease	57.0	44.6	54.9
Total revenue	5,461.2	5,329.1	5,471.4
Subsea | Service revenue
Disaggregation of Revenue [Line Items]
Product and service revenue	3,410.4	3,282.0	3,121.1
Subsea | Product revenue
Disaggregation of Revenue [Line Items]
Product and service revenue	1,993.8	2,002.5	2,295.4
Subsea | Europe, Central Asia
Disaggregation of Revenue [Line Items]
Total revenue	1,550.1	1,404.4	1,664.1
Subsea | Latin America
Disaggregation of Revenue [Line Items]
Total revenue	1,460.1	1,157.7	1,042.4
Subsea | Africa
Disaggregation of Revenue [Line Items]
Total revenue	865.6	1,057.3	908.6
Subsea | North America
Disaggregation of Revenue [Line Items]
Total revenue	780.6	753.6	899.7
Subsea | Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	687.5	927.4	772.1
Subsea | Middle East
Disaggregation of Revenue [Line Items]
Total revenue	117.3	28.7	184.5
Surface Technologies
Disaggregation of Revenue [Line Items]
Lease	158.1	113.8	87.1
Total revenue	1,239.2	1,074.4	1,059.2
Surface Technologies | Service revenue
Disaggregation of Revenue [Line Items]
Product and service revenue	217.9	158.7	150.2
Surface Technologies | Product revenue
Disaggregation of Revenue [Line Items]
Product and service revenue	863.2	801.9	821.9
Surface Technologies | Europe, Central Asia
Disaggregation of Revenue [Line Items]
Total revenue	166.7	191.5	192.7
Surface Technologies | Latin America
Disaggregation of Revenue [Line Items]
Total revenue	112.1	86.7	76.6
Surface Technologies | Africa
Disaggregation of Revenue [Line Items]
Total revenue	37.6	44.0	46.9
Surface Technologies | North America
Disaggregation of Revenue [Line Items]
Total revenue	552.0	372.7	367.9
Surface Technologies | Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	97.2	104.2	131.0
Surface Technologies | Middle East
Disaggregation of Revenue [Line Items]
Total revenue	$ 273.6	$ 275.3	$ 244.1