Goodwill and Intangibles, Net - Schedule of Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Beginning balance	$ 127.1	$ 127.1
Translation adjustments	(0.4)	0.0
Ending balance	126.7	127.1
Infrastructure
Goodwill [Roll Forward]
Beginning balance	105.7	105.7
Translation adjustments	(0.4)	0.0
Ending balance	105.3	105.7
Spectrum
Goodwill [Roll Forward]
Beginning balance	21.4	21.4
Translation adjustments	0.0	0.0
Ending balance	$ 21.4	$ 21.4