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Reportable Business Segments, Segment Results (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) segment | Mar. 31, 2020 USD ($)
Segment reporting information |  |
Number of reportable business segments | segment | 2 |
Net sales | $ 2,377.1 | $ 1,862.0
Operating income | 464.8 | 316.9
Interconnect Products and Assemblies |  |
Segment reporting information |  |
Net sales | 2,280.0 | 1,779.0
Cable Products and Solutions |  |
Segment reporting information |  |
Net sales | 97.1 | 83.0
Operating Segment |  |
Segment reporting information |  |
Net sales | 2,377.1 | 1,862.0
Operating income | 497.9 | 346.1
Operating Segment | Interconnect Products and Assemblies |  |
Segment reporting information |  |
Net sales | 2,280.0 | 1,779.0
Operating income | 489.4 | 339.8
Operating Segment | Cable Products and Solutions |  |
Segment reporting information |  |
Net sales | 97.1 | 83.0
Operating income | 8.5 | 6.3
Operating Segment | Corporate and Other |  |
Segment reporting information |  |
Net sales | 0.0 | 0.0
Inter-Segment |  |
Segment reporting information |  |
Net sales | 29.5 | 17.3
Inter-Segment | Interconnect Products and Assemblies |  |
Segment reporting information |  |
Net sales | 17.8 | 8.4
Inter-Segment | Cable Products and Solutions |  |
Segment reporting information |  |
Net sales | 11.7 | 8.9
Inter-Segment | Corporate and Other |  |
Segment reporting information |  |
Net sales | $ 0.0 | $ 0.0

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