Business Segments (Schedule Of Segment Revenue And Segment Operating Profit) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information
Revenue	$ 2,960.9	$ 3,845.0	$ 6,086.1	$ 7,233.0
Total segment operating profit	298.7	439.6	586.6	618.0
Corporate expense	(73.0)	(122.3)	(132.8)	(182.0)
Net interest expense	(50.9)	(72.1)	(138.3)	(154.2)
Total corporate items	(123.9)	(194.4)	(271.1)	(336.2)
Income before income taxes	174.8	245.2	315.5	281.8
Subsea
Segment Reporting Information
Revenue	1,217.4	1,730.3	2,397.6	3,107.0
Total segment operating profit	75.9	236.1	130.3	290.3
Onshore/Offshore
Segment Reporting Information
Revenue	1,342.4	1,812.9	2,915.8	3,576.9
Total segment operating profit	171.3	204.5	374.2	347.3
Surface Technologies
Segment Reporting Information
Revenue	401.1	300.0	772.7	548.4
Total segment operating profit	$ 51.5	(1.0)	$ 82.1	(19.6)
Other revenue
Segment Reporting Information
Revenue		$ 1.8		$ 0.7

Segment Reporting Corporate Expense

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Includes (1) corporate expenses, (2) other revenue and other expense, net, and 3) net interest expense.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
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-Name Accounting Standards Codification
-Topic 225
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-Section S99
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The net amount of nonoperating interest income (expense).

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The net result for the period of deducting operating expenses from operating revenues.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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