CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash Flows From Operating Activities:
Net income (loss)	$ (510,125)	$ (315,833)
Adjustments to reconcile net income (loss) to net cash flows from operating activities:
Depreciation and amortization	981,388	992,925
Realized and unrealized losses (gains) on investments, impairments and other	(64,831)	49,312
Non-cash, stock-based compensation	16,123	19,693
Deferred tax expense (benefit)	(174,719)	(35,300)
Changes in allowance for credit losses	15,603	33,108
Change in long-term deferred revenue and other long-term liabilities	420	8,139
Other, net	115,365	125,969
Changes in operating assets and operating liabilities, net	(164,957)	52,971
Net cash flows from operating activities	214,267	930,984
Cash Flows From Investing Activities:
Purchases of marketable investment securities	(2,247,724)	(21,847)
Sales and maturities of marketable investment securities	1,526,245	501,512
Purchases of property and equipment (Note 7)	(551,600)	(866,922)
Capitalized interest related to regulatory authorizations (Note 2)	(573,785)	(481,807)
Purchases of regulatory authorizations, including deposits		(1,104)
Sale of assets to CONX (Note 13)		26,719
Sale of Fiber business	47,207
Other, net	(64)	(4,716)
Net cash flows from investing activities	(1,799,721)	(848,165)
Cash Flows From Financing Activities:
Repayment of long-term debt, finance lease and other obligations	(46,272)	(52,758)
Redemption and repurchases of term loans, convertible and senior notes	(456,049)	(951,170)
Proceeds from issuance of convertible and senior notes	150,000
Debt issuance costs and debt (discount) premium	(946)
Early debt extinguishment gains (losses) of convertible and senior notes	11,465
Net proceeds from Class A common stock options exercised and stock issued under the Employee Stock Purchase Plan	6,994	1,832
Purchase of SNR Management's ownership interest in SNR HoldCo		(441,998)
Other, net	(31,189)	2
Net cash flows from financing activities	(365,997)	(1,444,092)
Effect of exchange rates on cash and cash equivalents	2,965	(3,701)
Net increase (decrease) in cash, cash equivalents, restricted cash and cash equivalents	(1,948,486)	(1,364,974)
Cash, cash equivalents, restricted cash and cash equivalents, beginning of period (Note 5)	4,593,804	1,911,601
Cash, cash equivalents, restricted cash and cash equivalents, end of period (Note 5)	$ 2,645,318	$ 546,627