Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Finite Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross carrying amount	$ 977.6	$ 977.6
Accumulated amortization	190.9	162.2
Intangible assets subject to amortization, net amount	786.7	815.4
Total intangible assets, gross carrying amount	991.4	991.3
Intangible assets, net amount	800.5	829.1
FCC Licenses and Spectrum Usage Rights [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	7.0	6.9
Perpetual Licenses [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	6.8	6.8
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross carrying amount	862.1	862.1
Accumulated amortization	(165.2)	(140.7)
Intangible assets subject to amortization, net amount	696.9	721.4
Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross carrying amount	109.5	109.5
Accumulated amortization	(24.4)	(20.5)
Intangible assets subject to amortization, net amount	85.1	89.0
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross carrying amount	6.0	6.0
Accumulated amortization	(1.3)	(1.0)
Intangible assets subject to amortization, net amount	$ 4.7	$ 5.0