Consolidated Statements of Changes in Stockholders' Equity € in Millions, $ in Millions	USD ($)	EUR (€)	Cumulative Effect, Period of Adoption, Adjustment USD ($)	Ordinary Shares Issued USD ($)	Ordinary Shares Held in Treasury and Employee Benefit Trust USD ($)	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, 2018	$ 10,388.9			$ 450.5	$ (2.4)	$ 10,197.0	$ 1,072.2		$ (1,359.7)	$ 31.3
Beginning balance (Accounting Standards Update 2014-09) at Dec. 31, 2018			$ 1.8					$ 1.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,412.1)						(2,415.2)			3.1
Other comprehensive loss	(48.5)								(47.8)	(0.7)
Cancellation of treasury shares (Note 18)	(92.7)			(4.0)		(88.7)
Issuance of ordinary shares	0.6			0.6
Cash dividends declared	(232.8)	€ (232.8)					(232.8)
Net sales of ordinary shares for employee benefit trust	2.4				2.4
Share-based compensation (Note 19)	74.5					74.5
Other	6.0						10.9			(4.9)
Ending balance at Dec. 31, 2019	7,688.1			447.1	0.0	10,182.8	(1,563.1)		(1,407.5)	28.8
Ending balance (Accounting Standards Update 2016-02) 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 loss	(214.4)								(215.0)	0.6
Cancellation of treasury shares (Note 18)	0.0
Issuance of ordinary shares	(7.0)			2.4		(9.4)
Cash dividends declared	(59.2)	€ (59.2)					(59.2)
Share-based compensation (Note 19)	69.0					69.0
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	0.0	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 loss	84.8								86.4	(1.6)
Cancellation of treasury shares (Note 18)	0.0
Issuance of ordinary shares	1.2			1.2
Cash dividends declared	0.0
Share-based compensation (Note 19)	26.8					26.8
Spin-off of Technip Energies (Note 2)	(897.2)					(1,108.4)			231.1	(19.9)
Distributions to non-controlling interest	(15.0)									(15.0)
Other	(10.9)						(1.9)			(9.0)
Ending balance at Dec. 31, 2021	$ 3,418.4			$ 450.7	$ 0.0	$ 9,160.8	$ (4,903.8)		$ (1,305.0)	$ 15.7