BUSINESS SEGMENTS - Geographic Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 6,403.5	$ 6,530.6	$ 6,950.2
Property, plant and equipment, net	2,597.2	2,756.2
United States
Segment Reporting Information [Line Items]
Revenues	1,137.2	1,320.1	1,458.6
Property, plant and equipment, net	383.4	439.1
Norway
Segment Reporting Information [Line Items]
Revenues	979.9	1,216.6	1,352.6
Property, plant and equipment, net	271.9	312.1
Brazil
Segment Reporting Information [Line Items]
Revenues	767.8	600.6	1,086.2
Property, plant and equipment, net	265.5	259.9
United Kingdom
Segment Reporting Information [Line Items]
Revenues	542.5	489.0	535.8
Property, plant and equipment, net	882.9	928.8
Mozambique
Segment Reporting Information [Line Items]
Revenues	472.0	320.4	80.0
Australia
Segment Reporting Information [Line Items]
Revenues	419.8	122.5	133.4
Angola
Segment Reporting Information [Line Items]
Revenues	406.3	482.8	498.1
Guyana
Segment Reporting Information [Line Items]
Revenues	314.7	330.1	7.2
Indonesia
Segment Reporting Information [Line Items]
Revenues	224.9	280.0	262.6
Singapore
Segment Reporting Information [Line Items]
Revenues	216.3	219.9	190.5
Malaysia
Segment Reporting Information [Line Items]
Revenues	206.9	190.0	197.2
India
Segment Reporting Information [Line Items]
Revenues	109.8	26.8	0.0
Trinidad
Segment Reporting Information [Line Items]
Revenues	78.1	106.3	42.8
Israel
Segment Reporting Information [Line Items]
Revenues	26.8	179.3	319.6
All other countries
Segment Reporting Information [Line Items]
Revenues	500.5	646.2	$ 785.6
Property, plant and equipment, net	378.8	398.7
Netherlands
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 414.7	$ 417.6