SHARE-BASED COMPENSATION (Details) - TechnipFMC plc Incentive Award Plan - USD ($) shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award
Shares available for future grant (in shares)	3.3
Stock-based compensation expense for nonvested stock units	$ 9.9	$ 3.4

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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