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Merger and Purchase Price Allocation - Narrative (Details) $ in Millions		3 Months Ended		12 Months Ended
	Aug. 01, 2025 USD ($) agreements	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Uniti Group, PreMerger Assets Settled
Business Combination [Line Items]
Number of lease agreements \| agreements	2
Useful life	20 years
Operating lease assets, including discontinued operation	$ 559.0
Asset purchase agreement, liabilities, including discontinued operation	(60.0)
Other lease agreement assets, including discontinued operation	0.1
Windstream
Business Combination [Line Items]
Business combination, consideration transferred	$ 2,376.6
Period adjustments, goodwill		$ 0.2
Acquisition cost		30.1	$ 7.8
Revenue since acquisition date, actual		809.3
Operating income since acquisition date, actual		103.3
Windstream \| Other
Business Combination [Line Items]
Acquisition cost		3.3	$ 0.2
Windstream \| Other \| Other current liabilities
Business Combination [Line Items]
Acquisition cost		$ 11.6		$ 9.8