Reportable Business Segments (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) segment	Sep. 30, 2016 USD ($)
Segment reporting information
Number of reportable business segments \| segment			2
Net sales	$ 1,840.8	$ 1,635.9	$ 5,067.4	$ 4,635.3
Segment operating income	377.9	326.3	1,028.2	866.1
Operating Segment
Segment reporting information
Segment operating income	402.6	355.8	1,104.8	970.8
Operating Segment \| Interconnect Products and Assemblies
Segment reporting information
Net sales	1,731.5	1,543.2	4,754.3	4,366.9
Segment operating income	388.3	342.0	1,060.8	932.2
Operating Segment \| Cable Products and Solutions
Segment reporting information
Net sales	109.3	92.7	313.1	268.4
Segment operating income	14.3	13.8	44.0	38.6
Inter-Segment
Segment reporting information
Net sales	13.6	10.2	38.4	26.6
Inter-Segment \| Interconnect Products and Assemblies
Segment reporting information
Net sales	2.7	1.5	6.9	5.0
Inter-Segment \| Cable Products and Solutions
Segment reporting information
Net sales	$ 10.9	$ 8.7	$ 31.5	$ 21.6

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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