Reportable Business Segments (Details) $ in Millions	3 Months Ended
Mar. 31, 2017 USD ($) segment	Mar. 31, 2016 USD ($)
Segment reporting information
Number of reportable business segments \| segment	2
Net sales	$ 1,560.1	$ 1,451.2
Segment operating income	314.1	239.4
Operating Segment
Segment reporting information
Segment operating income	337.6	292.3
Operating Segment \| Interconnect Products and Assemblies
Segment reporting information
Net sales	1,463.5	1,367.8
Segment operating income	323.9	281.2
Operating Segment \| Cable Products and Solutions
Segment reporting information
Net sales	96.6	83.4
Segment operating income	13.7	11.1
Inter-Segment
Segment reporting information
Net sales	12.5	7.9
Inter-Segment \| Interconnect Products and Assemblies
Segment reporting information
Net sales	2.3	1.6
Inter-Segment \| Cable Products and Solutions
Segment reporting information
Net sales	$ 10.2	$ 6.3

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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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.

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