Divestitures - Discontinued Operations Included on the Condensed Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity-based compensation			$ 16.6	$ 12.8
Asset impairments			0.0	17.2
Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on disposal	$ (3.6)	$ 62.5	11.2	83.4
Equity-based compensation			0.4	1.9
Depreciation and amortization			0.0	21.9
Asset impairments	$ 0.0	$ 17.2	0.0	17.2
Loss on equity investment			0.0	17.0
Capital expenditures			0.0	0.4
Discontinued Operations, Disposed of by Sale [Member] \| Home Business Segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on disposal			0.0	21.9
Discontinued Operations, Disposed of by Sale [Member] \| OWN Segment and DAS Business Unit [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on disposal			$ (869.2)	$ 0.0

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of deprecation and amortization expense attributable to property, plant and equipment and intangible assets of discontinued operations.

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