Merger and Purchase Price Allocation - Schedule of Transaction Related and Other Costs (Details) - Windstream - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Business Combination [Line Items]
Total	$ 157.7	$ 14.4	$ 179.0	$ 31.1
Professional Services And Fees
Business Combination [Line Items]
Total	115.4	12.4	131.8	27.4
Integration Costs
Business Combination [Line Items]
Total	33.8	0.0	34.8	0.0
Other Transaction Related Costs
Business Combination [Line Items]
Total	$ 8.5	$ 2.0	$ 12.4	$ 3.7