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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

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