DISCONTINUED OPERATIONS - Assets and liabilities of discontinued operations (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Assets
Total current assets of discontinued operations	$ 0.0	$ 5,696.8
Total non-current assets of discontinued operations	0.0	3,293.6
Liabilities
Total current liabilities of discontinued operations	0.0	6,121.3
Total non-current liabilities of discontinued operations	$ 0.0	1,081.3
Spinoff | Technip Energies N.V.
Assets
Cash and cash equivalents		3,538.6
Trade receivables, net of allowances		1,302.7
Contract assets		333.5
Other current assets		522.0
Total current assets of discontinued operations		5,696.8
Property, plant and equipment, net of accumulated depreciation		117.1
Goodwill		2,512.5
Other assets		664.0
Total non-current assets of discontinued operations		3,293.6
Total assets of discontinued operations		8,990.4
Liabilities
Accounts payable, trade		1,545.1
Contract liabilities		3,690.4
Other current liabilities		885.8
Total current liabilities of discontinued operations		6,121.3
Long-term debt, less current portion		482.2
Operating lease liabilities		248.2
Other liabilities		350.9
Total non-current liabilities of discontinued operations		1,081.3
Total liabilities of discontinued operations		$ 7,202.6