Segments and Geographic Information - Summary of Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
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Segment Reporting Information [Line Items] | ||||||||||
Total assets | $ 7,743.4 | $ 8,747.5 | ||||||||
Cash and cash equivalents | 571.1 | 564.9 | ||||||||
Deferred income tax assets | 521.1 | 537.7 | ||||||||
Operating Segments [Member] | ||||||||||
Segment Reporting Information [Line Items] | ||||||||||
Total assets | [1] | 6,632.0 | 6,272.9 | |||||||
Operating Segments [Member] | CCS [Member] | ||||||||||
Segment Reporting Information [Line Items] | ||||||||||
Total assets | [1] | 4,045.7 | 3,603.7 | |||||||
Operating Segments [Member] | Ruckus [Member] | ||||||||||
Segment Reporting Information [Line Items] | ||||||||||
Total assets | [1],[2] | 876.0 | 886.5 | |||||||
Operating Segments [Member] | ANS [Member] | ||||||||||
Segment Reporting Information [Line Items] | ||||||||||
Total assets | [1] | 1,710.3 | 1,688.8 | |||||||
Operating Segments [Member] | Corporate and Other [Member] | ||||||||||
Segment Reporting Information [Line Items] | ||||||||||
Total assets | [1],[3] | 0.0 | 93.9 | |||||||
Segment Reconciling Items [Member] | ||||||||||
Segment Reporting Information [Line Items] | ||||||||||
Cash and cash equivalents | 571.1 | 564.9 | ||||||||
Deferred income tax assets | 521.1 | 537.7 | ||||||||
Divested business assets | [4] | 19.2 | 14.5 | |||||||
Assets held for sale | $ 0.0 | $ 1,357.5 | ||||||||
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