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Fair Value Measurements (Summary of Asset Impairment and Decommission Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Fair Value Measurements [Abstract]
Asset impairment	$ 20,013	$ 8,920	$ 91,054	$ 61,964
Write-off of carrying value of decommissioned towers	186	698	6,105	12,242
Other (including tower and equipment decommission costs)	123	3,052	5,419	13,722
Total asset impairment and decommission costs	$ 20,322	$ 12,670	$ 102,578	$ 87,928

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Asset impairment and decommission costs.

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Impairment of Long-Lived Assets Held-for-use, Additions

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Other Asset Impairment Charges Including Third Pary Decommission Costs

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
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-Topic 820
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