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Reportable Business Segments (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) segment | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) segment | Sep. 30, 2015 USD ($)
Segment reporting information |  |  |  |
Number of reportable business segments | segment | 2 |  | 2 |
Net sales | $ 1,635.9 | $ 1,459.6 | $ 4,635.3 | $ 4,138.2
Segment operating income | 326.3 | 294.8 | 866.1 | 815.7
Operating Segment |  |  |  |
Segment reporting information |  |  |  |
Segment operating income | 355.8 | 317.6 | 970.8 | 886.5
Operating Segment | Interconnect Products and Assemblies |  |  |  |
Segment reporting information |  |  |  |
Net sales | 1,543.2 | 1,378.2 | 4,366.9 | 3,889.5
Segment operating income | 342.0 | 307.4 | 932.2 | 856.3
Operating Segment | Cable Products and Solutions |  |  |  |
Segment reporting information |  |  |  |
Net sales | 92.7 | 81.4 | 268.4 | 248.7
Segment operating income | 13.8 | 10.2 | 38.6 | 30.2
Inter-Segment |  |  |  |
Segment reporting information |  |  |  |
Net sales | 10.2 | 7.1 | 26.6 | 21.3
Inter-Segment | Interconnect Products and Assemblies |  |  |  |
Segment reporting information |  |  |  |
Net sales | 1.5 | 1.5 | 5.0 | 5.6
Inter-Segment | Cable Products and Solutions |  |  |  |
Segment reporting information |  |  |  |
Net sales | $ 8.7 | $ 5.6 | $ 21.6 | $ 15.7

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