Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash provided (required) by operating activities
Net income (loss)	$ (81.8)	$ 14.4	$ (3,237.9)
Net (income) loss from discontinued operations	45.3	72.6	(280.2)
Adjustments to reconcile net loss to cash provided (required) by operating activities
Depreciation and Amortization	377.2	385.4	412.1
Impairments	4.7	49.1	3,273.8
Employee benefit plan and share-based compensation costs	33.5	34.3	36.4
Deferred income tax benefit	(13.0)	(95.1)	(31.8)
(Income) loss from investment in Technip Energies	27.7	(322.2)	0.0
Unrealized (gain) loss on derivative instruments and foreign exchange	54.0	30.8	(13.3)
Income from equity affiliates, net of dividends received	(31.9)	(0.6)	(58.2)
Loss on early extinguishment of debt	29.8	61.9	0.0
Other	6.7	(5.5)	(32.7)
Changes in operating assets and liabilities, net of effects of acquisitions
Trade receivables, net and contract assets	(160.2)	(73.1)	433.4
Inventories, net	(35.0)	197.7	87.4
Accounts payable, trade	52.1	93.8	(236.4)
Contract liabilities	164.5	0.9	(61.8)
Income taxes payable (receivable), net	(62.1)	214.7	(56.1)
Other current assets and liabilities, net	(40.4)	63.5	551.2
Other non-current assets and liabilities, net	(19.0)	(7.6)	(13.5)
Cash provided by operating activities from continuing operations	352.1	715.0	772.4
Cash provided (required) by operating activities from discontinued operations	0.0	66.3	(115.5)
Cash provided by operating activities	352.1	781.3	656.9
Cash provided (required) by investing activities
Capital expenditures	(157.9)	(191.7)	(256.1)
Payment to acquire debt securities	0.0	(29.1)	(3.9)
Proceeds from sale of debt securities	9.7	27.4	51.5
Acquisitions, net of cash acquired	0.0	(15.3)	0.0
Proceeds from sale of assets	30.2	104.6	45.5
Proceeds from sales of investment in Technip Energies	288.5	900.9	0.0
Proceeds from repayment of advance to joint venture	12.5	25.0	26.7
Other	(20.8)	0.0	15.5
Cash provided (required) by investing activities from continuing operations	162.2	821.8	(120.8)
Cash required by investing activities from discontinued operations	0.0	(4.5)	(59.8)
Cash provided (required) by investing activities	162.2	817.3	(180.6)
Cash required by financing activities
Decrease in short-term debt	(200.4)	(62.0)	(31.9)
Cash settlement for derivative hedging debt	(80.5)	0.0	0.0
Net decrease in commercial paper	0.0	(974.3)	(340.9)
Proceeds from issuance of long-term debt	60.9	1,164.4	223.2
Repayments of long-term debt	(451.7)	(1,462.2)	(423.9)
Payments for debt issuance cost	0.0	(60.4)	0.0
Share repurchases	(100.2)	0.0	0.0
Dividends paid	0.0	0.0	(59.2)
Acquisition of non-controlling interest	0.0	(48.6)	0.0
Other	(24.8)	(4.2)	(19.2)
Cash required by financing activities from continuing operations	(796.7)	(1,447.3)	(651.9)
Cash required by financing activities from discontinued operations	0.0	(3,617.7)	(430.3)
Cash required by financing activities	(796.7)	(5,065.0)	(1,082.2)
Effect of changes in foreign exchange rates on cash and cash equivalents	12.1	(14.0)	223.5
Decrease in cash and cash equivalents	(270.3)	(3,480.4)	(382.4)
Cash and cash equivalents in the statement of cash flows, beginning of year	1,327.4	4,807.8	5,190.2
Cash and cash equivalents in the statement of cash flows, end of year	1,057.1	1,327.4	4,807.8
Supplemental disclosures of cash flow information attributable to continuing operations
Cash paid for interest (net of interest capitalized)	109.2	104.1	96.0
Cash paid for income taxes (net of refunds received)	189.2	25.1	107.8
Cash and cash equivalents	1,057.1	1,327.4	1,269.2
Cash and cash equivalents attributable to discontinued operations	0.0	0.0	3,538.6
Total cash and cash equivalents in the statement of cash flows	$ 1,057.1	$ 1,327.4	$ 4,807.8