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Reportable Business Segments and International Operations, Segment Results (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) segment | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Number of reportable business segments | segment |  |  |  |  |  |  |  |  | 2 |  |
Net sales | $ 2,426.0 | $ 2,323.4 | $ 1,987.5 | $ 1,862.0 | $ 2,151.0 | $ 2,100.6 | $ 2,015.3 | $ 1,958.5 | $ 8,598.9 | $ 8,225.4 | $ 8,202.0
Depreciation and amortization |  |  |  |  |  |  |  |  | 308.1 | 312.1 | 299.7
Operating income | 488.4 | $ 475.8 | $ 357.4 | $ 316.9 | 429.8 | $ 413.6 | $ 399.5 | $ 376.2 | 1,638.4 | 1,619.2 | 1,686.9
Segment assets (excluding goodwill) | 6,887.0 |  |  |  | 5,875.6 |  |  |  | 6,887.0 | 5,875.6 |
Interconnect Products and Assemblies |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 8,229.9 | 7,840.3 | 7,781.9
Cable Products and Solutions |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 369.0 | 385.1 | 420.1
Operating Segment |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 8,598.9 | 8,225.4 | 8,202.0
Depreciation and amortization |  |  |  |  |  |  |  |  | 308.1 | 312.1 | 299.7
Operating income |  |  |  |  |  |  |  |  | 1,776.6 | 1,762.2 | 1,805.1
Segment assets (excluding goodwill) | 6,887.0 |  |  |  | 5,875.6 |  |  |  | 6,887.0 | 5,875.6 | 5,886.7
Capital expenditures |  |  |  |  |  |  |  |  | 276.8 | 295.0 | 310.6
Operating Segment | Interconnect Products and Assemblies |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 8,229.9 | 7,840.3 | 7,781.9
Depreciation and amortization |  |  |  |  |  |  |  |  | 297.1 | 300.1 | 287.2
Operating income |  |  |  |  |  |  |  |  | 1,741.2 | 1,722.7 | 1,752.5
Segment assets (excluding goodwill) | 6,672.8 |  |  |  | 5,666.4 |  |  |  | 6,672.8 | 5,666.4 | 5,678.6
Capital expenditures |  |  |  |  |  |  |  |  | 272.1 | 289.6 | 305.0
Operating Segment | Cable Products and Solutions |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 369.0 | 385.1 | 420.1
Depreciation and amortization |  |  |  |  |  |  |  |  | 4.3 | 6.4 | 6.6
Operating income |  |  |  |  |  |  |  |  | 35.4 | 39.5 | 52.6
Segment assets (excluding goodwill) | $ 214.2 |  |  |  | $ 209.2 |  |  |  | 214.2 | 209.2 | 208.1
Capital expenditures |  |  |  |  |  |  |  |  | 3.7 | 4.1 | 5.2
Operating Segment | Corporate and Other |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Depreciation and amortization |  |  |  |  |  |  |  |  | 6.7 | 5.6 | 5.9
Capital expenditures |  |  |  |  |  |  |  |  | 1.0 | 1.3 | 0.4
Inter-Segment |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 96.7 | 86.9 | 46.8
Inter-Segment | Interconnect Products and Assemblies |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 58.5 | 35.3 | 12.8
Inter-Segment | Cable Products and Solutions |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 38.2 | 51.6 | 34.0
Inter-Segment | Corporate and Other |  |  |  |  |  |  |  |  |  |  |
Segment reporting information |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 0.0 | $ 0.0 | $ 0.0

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