FAIR VALUE MEASUREMENTS - Assets and liabilities measured on a recurring basis (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Assets
Investment in Technip Energies	$ 325.0	$ 292.4
Equity securities	0.0	317.3
Foreign exchange contracts	147.4	42.2
Liabilities
Derivative financial instruments	207.7	97.9
Fair value, measurements, recurring
Assets
Investment in Technip Energies	0.0	317.3
Equity securities	19.8	25.0
Held-to-maturity debt securities	16.0	24.0
Total assets	327.6	489.8
Liabilities
Total liabilities	350.2	176.5
Fair value, measurements, recurring \| Level 1
Assets
Investment in Technip Energies	0.0	317.3
Equity securities	19.8	25.0
Held-to-maturity debt securities	0.0	0.0
Total assets	19.8	342.3
Liabilities
Total liabilities	0.0	0.0
Fair value, measurements, recurring \| Level 2
Assets
Investment in Technip Energies	0.0	0.0
Equity securities	0.0	0.0
Held-to-maturity debt securities	16.0	24.0
Total assets	307.4	147.2
Liabilities
Total liabilities	350.2	176.5
Fair value, measurements, recurring \| Level 3
Assets
Investment in Technip Energies	0.0	0.0
Equity securities	0.0	0.0
Held-to-maturity debt securities	0.0	0.0
Total assets	0.0	0.0
Liabilities
Total liabilities	0.0	0.0
Foreign exchange contracts \| Fair value, measurements, recurring
Assets
Foreign exchange contracts	289.9	120.8
Liabilities
Derivative financial instruments	350.2	176.5
Foreign exchange contracts \| Fair value, measurements, recurring \| Level 1
Assets
Foreign exchange contracts	0.0	0.0
Liabilities
Derivative financial instruments	0.0	0.0
Foreign exchange contracts \| Fair value, measurements, recurring \| Level 2
Assets
Foreign exchange contracts	289.9	120.8
Liabilities
Derivative financial instruments	350.2	176.5
Foreign exchange contracts \| Fair value, measurements, recurring \| Level 3
Assets
Foreign exchange contracts	0.0	0.0
Liabilities
Derivative financial instruments	0.0	0.0
Nonqualified Plan \| Fair value, measurements, recurring
Assets
Money market and stable value funds	1.9	2.7
Nonqualified Plan \| Fair value, measurements, recurring \| Level 1
Assets
Money market and stable value funds	0.0	0.0
Nonqualified Plan \| Fair value, measurements, recurring \| Level 2
Assets
Money market and stable value funds	1.5	2.4
Nonqualified Plan \| Fair value, measurements, recurring \| Level 3
Assets
Money market and stable value funds	$ 0.0	$ 0.0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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