Business Segment Information (Other Business Segment Information) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Capital expenditures	$ 250.8	$ 404.4	$ 314.1
Depreciation and amortization	251.6	232.5	209.8
Research and development expense	135.3	123.7	112.4
Operating Segments \| Subsea Technologies
Segment Reporting Information [Line Items]
Capital expenditures	175.6	268.7	235.0
Depreciation and amortization	154.3	138.0	119.5
Research and development expense	110.7	92.2	87.1
Operating Segments \| Surface Technologies
Segment Reporting Information [Line Items]
Capital expenditures	69.4	124.6	70.1
Depreciation and amortization	74.4	72.0	68.0
Research and development expense	16.1	21.6	15.6
Operating Segments \| Energy Infrastructure
Segment Reporting Information [Line Items]
Capital expenditures	3.6	10.5	8.3
Depreciation and amortization	16.7	16.6	16.5
Research and development expense	9.5	11.3	12.2
Corporate
Segment Reporting Information [Line Items]
Capital expenditures	2.2	0.6	0.7
Depreciation and amortization	6.2	5.9	5.8
Intercompany Eliminations
Segment Reporting Information [Line Items]
Research and development expense	$ (1.0)	$ (1.4)	$ (2.5)

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 730
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

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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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