Consolidated Statements of Changes in Stockholders' Equity € in Millions, $ in Millions	USD ($)	EUR (€)	Cumulative Effect, Period of Adoption, Adjustment USD ($)	Ordinary Shares USD ($)	Capital in Excess of Par Value of Ordinary Shares USD ($)	Retained Earnings (Accumulated Deficit) USD ($)	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment USD ($)	Accumulated Other Comprehensive Income (Loss) USD ($)	Non- controlling Interest USD ($)
Beginning balance at Dec. 31, 2019	$ 7,688.1			$ 447.1	$ 10,182.8	$ (1,563.1)		$ (1,407.5)	$ 28.8
Beginning balance (Accounting Standards Update 2014-09) at Dec. 31, 2019			$ (7.8)				$ (7.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(3,237.9)					(3,287.6)			49.7
Other comprehensive income (loss)	(214.4)							(215.0)	0.6
Issuance of ordinary shares	(7.0)			2.4	(9.4)
Cash dividends declared ($0.13 per share)	(59.2)	€ (59.2)				(59.2)
Share-based compensation	69.0				69.0
Accrued distributions to non-controlling interest	(11.5)					(9.4)			(2.1)
Other	(5.0)					11.9			(16.9)
Ending balance at Dec. 31, 2020	4,214.3			449.5	10,242.4	(4,915.2)		(1,622.5)	60.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	14.4					13.3			1.1
Other comprehensive income (loss)	84.8							86.4	(1.6)
Issuance of ordinary shares	1.2			1.2
Cash dividends declared ($0.13 per share) | €		€ 0.0
Share-based compensation	26.8				26.8
Spin-off of Technip Energies	(897.2)				(1,108.4)			231.1	(19.9)
Accrued distributions to non-controlling interest	(15.0)					0.0			(15.0)
Other	(10.9)					(1.9)			(9.0)
Ending balance at Dec. 31, 2021	3,418.4			450.7	9,160.8	(4,903.8)		(1,305.0)	15.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(81.8)					(107.2)			25.4
Other comprehensive income (loss)	(0.8)							3.3	(4.1)
Issuance of ordinary shares	0.1			1.6	(1.5)
Cash dividends declared ($0.13 per share)	0.0
Share-based compensation	40.5				40.5
Shares repurchased and cancelled	(100.2)			(10.1)	(90.1)
Other	0.5					1.0			(0.5)
Ending balance at Dec. 31, 2022	$ 3,276.7			$ 442.2	$ 9,109.7	$ (5,010.0)		$ (1,301.7)	$ 36.5