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Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions			12 Months Ended
	Jul. 06, 2023	Aug. 23, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Amortization expense			$ 0.5	$ 0.7	$ 0.8
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]			Other income (expense), net
Spectrum Purchase Agreements | Disposal Group, Held-for-sale, Not Discontinued Operations
Business Acquisition [Line Items]
Indefinite-lived license				13.8
Finite-lived license				5.9
Operating lease liabilities				$ 3.8
Spectrum Purchase Agreements | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Gain on sale	$ 1.3
Asset Purchase Agreement
Business Acquisition [Line Items]
Asset acquisition, consideration transferred		$ 21.1
Payments to acquire productive assets		17.3
Asset acquisition, consideration transferred, liabilities incurred		$ 3.8

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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