Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 5,553.3	$ 6,737.4	$ 6,896.1	$ 6,269.3
Trade receivables, net of allowances of $118.9 in 2018 and $117.4 in 2017	2,079.3	1,484.4
Contract assets	1,286.9	1,755.5
Inventories, net (Note 7)	1,171.0	987.0
Derivative financial instruments (Note 17)	97.0	78.3
Income taxes receivable	333.3	337.0
Advances paid to suppliers	211.5	391.3
Other current assets (Note 8)	830.9	1,206.2
Total current assets	11,563.2	12,977.1
Investments in equity affiliates	360.3	272.5
Property, plant and equipment, net of accumulated depreciation of $2,070.7 in 2018 and $1,947.9 in 2017	3,670.5	3,871.5
Goodwill	9,003.4	8,929.8
Intangible assets, net of accumulated amortization of $618.3 in 2018 and $486.9 in 2017	1,223.1	1,333.8
Deferred income taxes	426.8	454.7
Derivative financial instruments (Note 17)	80.0	94.9
Other assets	332.7	329.4
Total assets	26,660.0	28,263.7
Liabilities and equity
Short-term debt and current portion of long-term debt (Note 11)	78.4	77.1
Accounts payable, trade	2,800.9	3,958.7
Contract liabilities	3,711.9	3,314.2
Accrued payroll	375.5	402.2
Derivative financial instruments (Note 17)	92.1	69.0
Income taxes payable	208.2	320.3
Other current liabilities (Note 8)	1,435.8	1,687.9
Total current liabilities	8,702.8	9,829.4
Long-term debt, less current portion (Note 11)	4,017.1	3,777.9
Accrued pension and other post-retirement benefits, less current portion	230.1	282.0
Derivative financial instruments (Note 17)	81.2	68.1
Deferred income taxes	351.8	419.7
Other liabilities	413.0	477.2
Total liabilities	13,796.0	14,854.3
Commitments and contingent liabilities (Note 15)
Redeemable noncontrolling interest	39.7	0.0
Stockholders’ equity (Note 12)
Ordinary shares, $1.00 par value; 618.3 shares and 525.0 shares authorized in 2018 and 2017, respectively; 452.9 shares and 465.1 shares issued and outstanding in 2018 and 2017, respectively; 12.3 and 2.1 shares canceled in 2018 and 2017, respectively	452.9	465.1
Ordinary shares held in employee benefit trust, at cost; 0.1 shares in 2018 and 2017	(2.4)	(4.8)
Capital in excess of par value of ordinary shares	10,247.1	10,483.3
Retained earnings	3,421.1	3,448.0
Accumulated other comprehensive loss	(1,313.9)	(1,003.7)
Total TechnipFMC plc stockholders’ equity	12,804.8	13,387.9
Noncontrolling interests	19.5	21.5
Total equity	12,824.3	13,409.4
Total liabilities and equity	$ 26,660.0	$ 28,263.7