Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 4,807.8	$ 5,190.2
Accounts and Other Receivables, Net, Current	2,289.8	2,287.1
Contract assets, net of allowances of $1.0 in 2020 and $2.5 in 2019	1,267.6	1,520.0
Inventories, net (Note 9)	1,268.5	1,416.0
Derivative financial instruments	301.4	101.9
Income taxes receivable	313.4	264.6
Advances paid to suppliers	203.6	242.9
Other current assets (Note 10)	992.6	863.7
Total current assets	11,444.7	11,886.4
Investments in equity affiliates (Note 12)	358.9	300.4
Property, plant and equipment, net (Note 14)	2,861.8	3,162.0
Operating Lease, Right-of-Use Asset	1,016.7	892.6
Finance Lease, Right-of-Use Asset, before Accumulated Amortization	27.5	0.0
Goodwill (Note 15)	2,512.5	5,598.3
Intangible assets, net (Note 15)	981.1	1,086.6
Deferred income taxes (Note 21)	217.9	260.5
Derivative financial instruments (Note 23)	35.9	39.5
Other assets	235.6	292.5
Total assets	19,692.6	23,518.8
Liabilities and equity
Short-term debt and current portion of long-term debt (Note 16)	636.2	495.4
Operating Lease, Liability, Current	247.0	275.1
Finance Lease, Liability	26.9	0.0
Accounts payable, trade	2,740.3	2,659.8
Contract liabilities	4,736.1	4,585.1
Accrued payroll	418.8	411.5
Derivative financial instruments (Note 23)	167.2	141.3
Income taxes payable	74.1	75.7
Other current liabilities (Note 10)	1,368.6	1,494.5
Total current liabilities	10,415.2	10,138.4
Long-term debt, less current portion (Note 16)	3,317.7	3,980.0
Operating Lease, Liability, Noncurrent	881.0	681.7
Deferred income taxes (Note 21)	79.5	138.2
Accrued pension and other post-retirement benefits, less current portion (Note 22)	420.8	368.6
Derivative financial instruments (Note 23)	23.3	52.7
Other liabilities	297.1	430.0
Total liabilities	15,434.6	15,789.6
Commitments and contingent liabilities (Note 20)
Redeemable non-controlling interest	43.7	41.1
Stockholders’ equity (Note 17)
Ordinary shares, $1 par value; 618.3 shares and 618.3 shares authorized in 2020 and 2019, respectively; 449.5 shares and 447.1 shares issued and outstanding in 2020 and 2019, respectively; 0 and 4 shares canceled in 2020 and 2019, respectively	449.5	447.1
Capital in excess of par value of ordinary shares	10,242.4	10,182.8
Accumulated deficit	(4,915.2)	(1,563.1)
Accumulated other comprehensive loss	(1,622.5)	(1,407.5)
Total TechnipFMC plc stockholders’ equity	4,154.2	7,659.3
Non-controlling interests	60.1	28.8
Total equity	4,214.3	7,688.1
Total liabilities and equity	19,692.6	23,518.8
Contract with Customer, Asset, Allowance for Credit Loss	$ 1.0	$ 2.5
Ordinary shares, shares authorized (in shares)	618,300,000	618,300,000