Commitments and Contingencies (Details) $ in Thousands						3 Months Ended	12 Months Ended			195 Months Ended
	Mar. 30, 2024	Oct. 12, 2023 USD ($)	Sep. 29, 2023	Jun. 14, 2023	Aug. 18, 2015 USD ($)	Mar. 31, 2024 USD ($) item	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2024 USD ($) item	Jun. 14, 2025	Sep. 20, 2022 USD ($)	Jun. 14, 2022 USD ($)
Spectrum Investments
Litigation accrual												$ 3,900
Minimum percentage of population having access to average download speed			70.00%
Percentage of Population Five G Services Offered											75.00%
Percentage of Population Northstar Wireless and SNR Wireless offered	75.00%
Regulatory authorizations, net						$ 30,282,338	$ 38,114,249			$ 30,282,338
MHz 700 Licenses and AWS-4 Licenses
Spectrum Investments
Percentage of population for deploy 5G services in each Economic Area				70.00%
H Block Licenses
Spectrum Investments
Percentage of population for deploy 5G services in each Economic Area				75.00%
5G Network Development
Spectrum Investments
Payment to customer										30,000,000
Minimum | MHz 700 Licenses and AWS-4 Licenses
Spectrum Investments
Minimum percentage of population having access to average download speed			70.00%	70.00%
SNR Wireless Management LLC
Spectrum Investments
Regulatory authorizations, net						4,271,459				4,271,459
Wireless
Spectrum Investments
Network development current and future expenditures						10,000,000	$ 10,000,000	$ 10,000,000	$ 10,000,000
Payment to customer						24,000
Regulatory authorizations, net						19,839,739				19,839,739
Number of Americans, Provided With Five G Deployment Services													200,000
Number of Americans To Whom Five G Broadband Service Is Provided													250,000
H Block Licenses
Spectrum Investments
Regulatory authorizations, net						1,671,506				1,671,506
DBS Licenses.
Spectrum Investments
Regulatory authorizations, net						677,409				677,409
700 MHz Licenses
Spectrum Investments
Regulatory authorizations, net						711,871				711,871
600 MHz Licenses
Spectrum Investments
Regulatory authorizations, net						6,213,335				6,213,335
MVDDS
Spectrum Investments
Regulatory authorizations, net						24,000				24,000
28 GHz Licenses
Spectrum Investments
Regulatory authorizations, net						2,883				2,883
24 GHz Licenses
Spectrum Investments
Regulatory authorizations, net						11,772				11,772
37 Ghz, 39 Ghz and 47 Ghz Licenses
Spectrum Investments
Regulatory authorizations, net						202,533				202,533
3550-3650 MHz Licenses
Spectrum Investments
Regulatory authorizations, net						912,939				912,939
Ghz 3.7 to 3.98
Spectrum Investments
Regulatory authorizations, net						2,969				2,969
Ghz 3.45 to 3.55
Spectrum Investments
Regulatory authorizations, net						7,329,093				7,329,093
1695-1710 MHz, 1755-1780 MHz, and 2155-2180 MHz
Spectrum Investments
Regulatory authorizations, net						972				972
AWS-3 Licenses
Spectrum Investments
Regulatory authorizations, net						5,618,930				5,618,930
AWS-4 Licenses
Spectrum Investments
Regulatory authorizations, net						1,940,000				1,940,000
Capitalized Interest
Spectrum Investments
Payment to customer						6,000
Regulatory authorizations, net						6,171,140				6,171,140
EchoStar
Spectrum Investments
Regulatory authorizations, net						$ 5,480,473				$ 5,480,473
Northstar Spectrum
Spectrum Investments
Purchase of ownership interests		$ 109,000
Northstar Spectrum And SNR Holdco | AWS-3 Licenses
Commitments relating to AWS-3 Auction
Percentage of bidding credit						25.00%
Northstar Wireless or Northstar Spectrum
Spectrum Investments
Interim payment percentage						15.00%
Re-Auction payment						$ 1,892,000
Overpayment of interim payment						$ 334,000
Northstar Wireless or Northstar Spectrum | Northstar Licenses
Spectrum Investments
Number of wireless spectrum licenses | item						261				261
Commitments relating to AWS-3 Auction
Bidding credit value					$ 1,961,000
Northstar Wireless or Northstar Spectrum | SNR Licenses
Commitments relating to AWS-3 Auction
Percentage of bidding credit					25.00%
SNR Wireless or SNR Wireless Holdco
Spectrum Investments
Non-payment gross winning bids						$ 1,211,000				$ 1,211,000
Interim payment percentage						15.00%
Re-Auction payment						$ 1,029,000
Overpayment of interim payment						$ 182,000
SNR Wireless or SNR Wireless Holdco | American III
Spectrum Investments
Number of wireless spectrum licenses | item						244				244
SNR Wireless or SNR Wireless Holdco | SNR Licenses
Commitments relating to AWS-3 Auction
Bidding credit value					$ 1,370,000
Prior Arrangement | Northstar Licenses
Spectrum Investments
Non-payment gross winning bids						$ 2,226,000				$ 2,226,000
Prior Arrangement | Northstar Wireless or Northstar Spectrum
Commitments relating to AWS-3 Auction
Number of licenses returned | item						84
Prior Arrangement | SNR Wireless or SNR Wireless Holdco | SNR Licenses
Commitments relating to AWS-3 Auction
Number of licenses returned | item						113