Merger and Purchase Price Allocation - Schedule of Transaction Related and Other Costs (Details) - Windstream - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Business Combination [Line Items]
Acquisition cost	$ 211.8	$ 38.7	$ 12.6
Professional Services And Fees
Business Combination [Line Items]
Acquisition cost	140.0	32.3	10.2
Integration Costs
Business Combination [Line Items]
Acquisition cost	56.4	0.0	0.0
Other Transaction Related Costs
Business Combination [Line Items]
Acquisition cost	$ 15.4	$ 6.4	$ 2.4