Condensed Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income (loss)		$ (15.2)	$ 120.6
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	[1]	6.6	(41.6)
Net unrealized gains (losses) on available-for-sale securities:
Net unrealized gains arising during the period		0.8	2.4
Reclassification adjustment for net gains (losses) included in net income		0.0	0.0
Net unrealized gains on available-for-sale securities	[2]	0.8	2.4
Net gains (losses) on hedging instruments:
Net gains arising during the period		24.7	(32.4)
Reclassification adjustment for net (gains) losses included in net income		34.4	42.8
Net gains (losses) on hedging instruments	[3]	59.1	10.4
Pension and other post-retirement benefits:
Reclassification adjustment for amortization of prior service cost included in net income		0.1
Reclassification adjustment for amortization of net actuarial loss included in net income		0.4	0.1
Net pension and other post-retirement benefits (costs)	[4]	0.5	0.1
Other comprehensive income (loss), net of tax		67.0	(28.7)
Comprehensive income		51.8	91.9
Comprehensive (income) loss attributable to noncontrolling interest		(3.7)	0.9
Comprehensive income attributable to TechnipFMC plc		$ 48.1	$ 92.8

[1] Net of income tax (expense) benefit of $(0.7) and nil for the three months ended March 31, 2017 and 2016, respectively.

[2] Net of income tax (expense) benefit of nil and nil for the three months ended March 31, 2017 and 2016, respectively.

[3] Net of income tax (expense) benefit of $(18.6) and $(7.6) for the three months ended March 31, 2017 and 2016, respectively.

[4] Net of income tax (expense) benefit of $0.2 and $0.1 for the three months ended March 31, 2017 and 2016, respectively.