Goodwill and Intangible Assets and Liabilities - Schedule of Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Goodwill [Line Items]
Goodwill, gross	$ 1,673.8	$ 672.9
Accumulated impairment charges	(515.5)	(515.5)
Goodwill	1,158.3	157.4
Acquisition of Windstream	1,000.9
Kinetic
Goodwill [Line Items]
Goodwill, gross	763.7	0.0
Accumulated impairment charges	0.0	0.0
Goodwill	763.7	0.0
Acquisition of Windstream	763.7
Uniti Solutions
Goodwill [Line Items]
Goodwill, gross	192.2	0.0
Accumulated impairment charges	0.0	0.0
Goodwill	192.2	0.0
Acquisition of Windstream	192.2
Fiber Infrastructure
Goodwill [Line Items]
Goodwill, gross	717.9	672.9
Accumulated impairment charges	(515.5)	(515.5)
Goodwill	202.4	$ 157.4
Acquisition of Windstream	$ 45.0