v3.26.3
Segment and Geographic Information - Summary of Net Sales, Significant Segment Expenses and Other Segment Items Used in Determining Segment Net Income (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting Information [Line Items]        
Segment net sales $ 319.7 $ 337.8 $ 937.7 $ 897.5
Cost of sales 207.3 217.4 596.2 527.2
Operating expenses 97.1 140.5 336.2 431.4
Amortization of intangible assets (19.0) (21.6) (59.6) (66.8)
Equity-based compensation     (23.7) (27.3)
Interest income 12.9 3.9 39.1 11.4
Interest expense 0.9 0.0 1.7 0.0
Income tax (expense) benefit (20.0) 11.4 (42.3) (347.8)
Operating income (loss) 22.9 (11.5) 14.5 (33.5)
Income (loss) from continuing operations 54.7 (18.9) 97.4 319.5
Income from discontinued operations, net of tax 975.9 127.3 6,736.3 604.7
Net income 1,030.6 108.4 6,833.7 924.2
Operating Segments [Member]        
Segment Reporting Information [Line Items]        
Segment net sales 319.8 337.8 937.5 885.3
Cost of sales (207.3) (211.9) (595.5) (510.2)
Operating expenses (58.6) (75.4) (198.2) (213.7)
Amortization of intangible assets (19.0) (21.4) (59.4) (67.6)
Interest income 12.9 3.9 39.1 11.4
Interest expense (0.9) 0.0 (1.7) 0.0
Other items [1] (4.7) (0.6) (21.6) (19.4)
Income tax (expense) benefit 20.0 (11.4) 42.3 347.8
Operating income (loss) 54.8 18.1 128.0 426.3
Income (loss) from continuing operations 54.7 (18.9) 97.4 319.5
Income from discontinued operations, net of tax 975.9 127.3 6,736.3 604.7
Net income 1,030.6 108.4 6,833.7 924.2
Depreciation expense [2] 2.9 3.6 8.9 11.1
Additions to property, plant and equipment [2] 0.2 2.6 2.8 5.4
Operating Segments [Member] | Continuing Operations [Member]        
Segment Reporting Information [Line Items]        
Equity-based compensation (7.4) (2.9) (14.5) (7.3)
Corporate, Non-Segment        
Segment Reporting Information [Line Items]        
Unallocated amounts [3] $ (0.1) $ (37.0) $ (30.6) $ (106.8)
[1] Includes restructuring costs, net, transaction, transformation and integration costs, and other income (expense), net.
[2] Represents amounts attributable to Aurora, and excludes unallocated amounts as described in footnote (2) above.
[3] Includes certain revenues reflected within continuing operations related to products associated with businesses affected by prior divestiture transactions. Such amounts continue to be reported within continuing operations based on the terms of the underlying transactions. Also reflected in unallocated amounts are general corporate costs that were previously allocated to the divested businesses. These indirect expenses have been classified as continuing operations because they were not directly attributable to the divested businesses. Beginning in the first quarter of 2025, the costs previously allocated to the OWN segment and DAS business unit were reallocated to the Company’s remaining segments and partially offset by income under the Amphenol TSA. Beginning in the first quarter of 2026, the costs previously allocated to the CCS segment were reallocated to the Company’s remaining segments and partially offset by income under the Amphenol TSA. Beginning in the third quarter of 2026, the costs previously allocated to the RUCKUS segment were reallocated to the Company’s remaining segment and partially offset by income under the Belden TSA.