Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands			12 Months Ended
	Feb. 16, 2024	Oct. 12, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Cost of sales - equipment and other			$ 1,636,955	$ 2,434,904	$ 2,099,136
Interest expense, net of amounts capitalized (Note 2)			$ (481,622)	(90,357)	(79,217)
Revenue, practical expedient, financing component			true
Derivative Financial Instruments
Total noncash impairment charge			$ 758,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]			Impairment of Long-Lived Assets Held-for-use
Long-Term Deferred Revenue, Distribution and Carriage Payments
Deferred upfront payment, amortization period			10 years
Advertising expenses			$ 745,000	868,000	816,000
Research and Development
Research and development cost			$ 91,000	110,000	110,000
Minimum
Summary of Significant Accounting Policies
Finance lease, lease term			1 year
Operating lease, lease term			1 year
Property and Equipment
Depreciable Life			1 year
Business Combinations
Acquired intangible assets, average finite useful life			1 year
Maximum
Summary of Significant Accounting Policies
Finance lease, lease term			13 years
Operating lease, lease term			13 years
Option to terminate period - Operating			1 year
Property and Equipment
Depreciable Life			40 years
Business Combinations
Acquired intangible assets, average finite useful life			20 years
SNR HoldCo
Summary of Significant Accounting Policies
Purchase of ownership interests	$ 442,000
5G Network Development
Summary of Significant Accounting Policies
Cost of sales - equipment and other				$ 977,000	$ 522,000
Interest expense, net of amounts capitalized (Note 2)			$ 429,000
Northstar
Summary of Significant Accounting Policies
Purchase of ownership interests		$ 109,000
Boost infinite
Summary of Significant Accounting Policies
Devices and other equipment made under an installment plan			36 months