Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash provided (required) by operating activities
Income (loss) from continuing operations	$ 259.5	$ (3,403.7)
Adjustments to reconcile income (loss) from continuing operations to cash provided (required) by operating activities
Depreciation	145.7	153.0
Amortization	47.5	51.1
Impairments	19.6	3,221.7
Employee benefit plan and share-based compensation costs	10.5	28.5
Deferred income tax benefit, net	(14.0)	(25.7)
Income from investment in Technip Energies	(323.3)	0.0
Unrealized (gain) loss on derivative instruments and foreign exchange	61.4	(5.2)
Income from equity affiliates, net of dividends received	(20.4)	(35.8)
Loss on early extinguishment of debt	23.5	0.0
Other	3.9	(13.9)
Changes in operating assets and liabilities, net of effects of acquisitions
Trade receivables, net and contract assets	(353.5)	(126.8)
Inventories, net	122.6	(56.8)
Accounts payable, trade	108.4	(72.8)
Contract liabilities	(206.9)	51.3
Income taxes payable (receivable), net	173.6	4.5
Other current assets and liabilities, net	34.5	(181.5)
Other non-current assets and liabilities, net	3.0	(3.5)
Cash provided (required) by operating activities from continuing operations	95.6	(415.6)
Cash provided by operating activities from discontinued operations	66.3	349.6
Cash provided (required) by operating activities	161.9	(66.0)
Cash provided (required) by investing activities
Capital expenditures	(83.9)	(163.6)
Proceeds from redemption of debt securities	24.2	0.0
Payments to Acquire Debt Securities, Available-for-sale	(29.1)	0.0
Proceeds from sales of assets	88.7	25.0
Proceeds from sale of investment in Technip Energies	458.1	0.0
Proceeds from repayment of advances to joint venture	12.5	12.5
Other	0.0	11.2
Cash provided (required) by investing activities from continuing operations	470.5	(114.9)
Cash required by investing activities from discontinued operations	(4.5)	(22.4)
Cash provided (required) by investing activities	466.0	(137.3)
Cash provided (required) by financing activities
Net increase in short-term debt	(23.1)	24.0
Net decrease in commercial paper	(974.3)	(39.1)
Proceeds from issuance of long-term debt	1,164.4	163.6
Repayments of long-term debt	(1,065.8)	0.0
Payments for debt issuance costs	(53.5)	0.0
Dividends paid	0.0	(59.2)
Payments related to taxes withheld on share-based compensation	(2.4)
Other	(1.1)	(6.4)
Cash provided (required) by financing activities from continuing operations	(955.8)	82.9
Cash required by financing activities from discontinued operations	(79.1)	(327.2)
Cash required by financing activities	(1,034.9)	(244.3)
Effect of changes in foreign exchange rates on cash and cash equivalents	(7.3)	(42.0)
Change in cash and cash equivalents	(414.3)	(489.6)
Cash and cash equivalents, beginning of period	1,269.2	1,563.1
Cash and cash equivalents, end of period	$ 854.9	$ 1,073.5