Debt and Other Financing Arrangements - Debt Maturity Schedule, Deferred Financing Costs, Debt Covenants - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Unamortized note issuance costs	$ 33.0	$ 34.6
Amortization of Debt Issuance Costs	$ 9.1	8.4	$ 7.1
Senior secured net leverage ratio maximum allowed under revolving credit facility	5.75%
Other Noncurrent Assets [Member]
Debt Instrument [Line Items]
Unamortized note issuance costs	$ 3.3	4.9
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Utilization threshold for maximum senior secured net leverage ratio	35.00%
Network Receivables Facility [Member]
Debt Instrument [Line Items]
Deferred financing costs		0.4
CBTS Receivable Facility [Member]
Debt Instrument [Line Items]
Deferred financing costs		1.7
Extension of the Maturity Date of the Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Deferred financing costs	$ 0.6
Term B-3 Loans [Member]
Debt Instrument [Line Items]
Deferred financing costs		$ 1.9
Term B-4 Loans [Member]
Debt Instrument [Line Items]
Deferred financing costs	0.9
Term B-3 Loans Amendment for a Reduction in the Interest Rate Margin [Member]
Debt Instrument [Line Items]
Deferred financing costs	0.7
Reduction in the Interest Rate Margin for Term B-3 Loans [Member]
Debt Instrument [Line Items]
Deferred financing costs	0.3
Reduction in the Interest Rate Margin for Term B-1 Loans [Member]
Debt Instrument [Line Items]
Deferred financing costs	0.7
Amending Receivables Facility [Member]
Debt Instrument [Line Items]
Deferred financing costs			$ 0.1
Incremental Term B-2 Loans [Member]
Debt Instrument [Line Items]
Deferred financing costs	$ 2.4