Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash provided (required) by operating activities
Income (loss) from continuing operations	$ 432.1	$ (3,227.9)
Adjustments to reconcile income (loss) from continuing operations to cash provided (required) by operating activities
Depreciation	71.1	78.4
Amortization	24.1	25.5
Impairments	18.8	3,188.0
Employee benefit plan and share-based compensation costs	4.7	16.3
Deferred income tax benefit, net	(31.9)	(58.7)
Income from investment in Technip Energies	(470.1)	0.0
Unrealized loss on derivative instruments and foreign exchange	(5.5)	92.6
Income from equity affiliates, net of dividends received	(7.7)	(22.1)
Loss on early extinguishment of debt	23.5	0.0
Other	(0.1)	(5.1)
Changes in operating assets and liabilities, net of effects of acquisitions
Trade receivables, net and contract assets	(165.6)	38.3
Inventories, net	66.0	(29.1)
Accounts payable, trade	84.8	(56.9)
Contract liabilities	(132.9)	50.3
Income taxes payable (receivable), net	165.3	43.4
Other current assets and liabilities, net	100.7	(676.7)
Other noncurrent assets and liabilities, net	4.2	103.9
Cash provided (required) by operating activities from continuing operations	181.5	(439.8)
Cash provided by operating activities from discontinued operations	66.3	467.7
Cash provided by operating activities	247.8	27.9
Cash provided (required) by investing activities
Capital expenditures	(44.2)	(75.5)
Proceeds from sale of debt securities	24.2	0.0
Cash received from divestiture	0.0	2.5
Proceeds from sale of assets	4.4	7.1
Proceed from sale of investment in Technip Energies	100.0	0.0
Advances from BPI	100.0	0.0
Proceeds from repayment of advances to joint venture	12.5	0.0
Other	0.0	1.9
Cash provided (required) by investing activities from continuing operations	196.9	(64.0)
Cash required by investing activities from discontinued operations	(4.5)	(9.5)
Cash provided (required) by investing activities	192.4	(73.5)
Cash provided (required) by financing activities
Net increase in short-term debt	6.2	73.6
Net decrease in commercial paper	(953.1)	(309.2)
Proceeds from revolving credit facility	200.0	500.0
Proceeds from issuance of long-term debt	1,000.0	0.0
Repayments of long-term debt	(1,065.8)	0.0
Payments for debt issuance costs	(53.5)	0.0
Payments related to taxes withheld on share-based compensation	0.0	(3.2)
Cash paid for finance leases	(0.4)	0.0
Cash provided (required) by financing activities from continuing operations	(866.6)	261.2
Cash provided (required) by financing activities from discontinued operations	(79.1)	(458.2)
Cash required by financing activities	(945.7)	(197.0)
Effect of changes in foreign exchange rates on cash and cash equivalents	(10.9)	(9.7)
Decrease in cash and cash equivalents	(516.4)	(252.3)
Cash and cash equivalents, beginning of period	1,269.2	1,188.0
Cash and cash equivalents, end of period	$ 752.8	$ 935.7