CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash provided (required) by operating activities
Net income (loss)	$ 7.8	$ (53.7)
Net loss from discontinued operations	0.0	19.4
Adjustments to reconcile income (loss) from continuing operations to cash provided (required) by operating activities
Depreciation and amortization	93.0	95.9
Impairments	0.0	1.1
Loss from investment in Technip Energies	0.0	28.5
Income from equity affiliates, net of dividends received	(14.2)	(5.4)
Other non-cash items, net	18.0	52.6
Changes in operating assets and liabilities, net of effects of acquisitions
Trade receivables, net and Contract assets	(392.1)	(64.4)
Inventories, net	(94.7)	(15.9)
Accounts payable, trade	123.3	(26.9)
Contract liabilities	14.3	(183.5)
Income taxes payable, net	12.8	1.8
Other current assets and liabilities, net	(148.4)	(161.0)
Other non-current assets and liabilities, net	(6.0)	(17.9)
Cash required by operating activities	(386.2)	(329.4)
Cash provided (required) by investing activities
Capital expenditures	(57.3)	(27.3)
Proceeds from sale of investment in Technip Energies	0.0	238.5
Other investing activities	4.5	(7.5)
Cash provided (required) by investing activities	(52.8)	203.7
Cash required by financing activities
Net decrease in short-term debt	(9.2)	(8.0)
Cash settlement for derivative hedging debt	(12.9)	0.0
Share repurchases	(50.0)	0.0
Other financing activities	(15.4)	(5.1)
Cash required by financing activities	(87.5)	(13.1)
Effect of changes in foreign exchange rates on cash and cash equivalents	(8.3)	14.4
Change in cash and cash equivalents	(534.8)	(124.4)
Cash and cash equivalents, beginning of period	1,057.1	1,327.4
Cash and cash equivalents, end of period	$ 522.3	$ 1,203.0