Interest Expense Related to Dilutive Shares, Net of Tax

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

Amount after tax of income (loss) from continuing operations attributable to the parent.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

+ References

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent, and includes adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

+ References

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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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Earnings Per Share (Reconciliation Of Number Of Shares Used For Basic And Diluted Earnings Per Share ("EPS") Calculation ) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income attributable to TechnipFMC plc									$ 113.3	$ 393.3	$ 14.4
After-tax interest expense related to dilutive shares									0.0	1.5	2.5
Net income attributable to TechnipFMC plc adjusted for dilutive effects									$ 113.3	$ 394.8	$ 16.9
Weighted average number of shares outstanding									466.7	119.4	114.9
Total shares and dilutive securities (in shares)									468.3	125.1	127.3
Basic earnings per share attributable to TechnipFMC plc (usd per share)	$ (0.33)	$ 0.26	$ 0.35	$ (0.04)	$ (1.13)	$ 2.50	$ 0.87	$ 1.02	$ 0.24	$ 3.29	$ 0.13
Diluted earnings per share attributable to TechnipFMC plc (usd per share)	$ (0.33)	$ 0.26	$ 0.35	$ (0.04)	$ (1.13)	$ 2.39	$ 0.83	$ 0.97	$ 0.24	$ 3.16	$ 0.13
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of share-based payment arrangements (in shares)									0.2	0.0	0.0
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of share-based payment arrangements (in shares)									0.0	0.0	0.0
Performance shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of share-based payment arrangements (in shares)									1.4	0.5	0.6
Convertible debt securities
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of convertible bonds (in shares)									0.0	5.2	11.8