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Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities - Investments Measured at Fair Value On A Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Jul. 01, 2020
Fair value of marketable securities      
Debt securities $ 875,000    
Contractual maturities extending longer than one year through and including five years 2,000    
Derivative's fair value $ 1,693,000 $ 678,000  
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Assets, Noncurrent Other Assets, Noncurrent  
Fair value measurements on recurring basis      
Fair value of marketable securities      
Cash Equivalents (including restricted) $ 1,620,458 $ 7,592,696  
Total 877,672 3,004,214  
Fair value measurements on recurring basis | U.S. Treasury and agency securities      
Fair value of marketable securities      
Total 22,824    
Fair value measurements on recurring basis | Commercial paper      
Fair value of marketable securities      
Total 696,324 2,533,875  
Fair value measurements on recurring basis | Corporate securities      
Fair value of marketable securities      
Total 156,380 462,999  
Fair value measurements on recurring basis | Other (including restricted)      
Fair value of marketable securities      
Total 1,489 5,445  
Fair value measurements on recurring basis | Equity securities      
Fair value of marketable securities      
Equity securities 655 1,895  
Fair value measurements on recurring basis | Level 1      
Fair value of marketable securities      
Cash Equivalents (including restricted) 174,050 83,302  
Total 23,479 1,895  
Fair value measurements on recurring basis | Level 1 | U.S. Treasury and agency securities      
Fair value of marketable securities      
Total 22,824    
Fair value measurements on recurring basis | Level 1 | Equity securities      
Fair value of marketable securities      
Equity securities 655 1,895  
Fair value measurements on recurring basis | Level 2      
Fair value of marketable securities      
Cash Equivalents (including restricted) 1,446,408 7,509,394  
Total 854,049 3,002,167  
Fair value measurements on recurring basis | Level 2 | Commercial paper      
Fair value of marketable securities      
Total 696,324 2,533,875  
Fair value measurements on recurring basis | Level 2 | Corporate securities      
Fair value of marketable securities      
Total 156,380 462,999  
Fair value measurements on recurring basis | Level 2 | Other (including restricted)      
Fair value of marketable securities      
Total 1,345 5,293  
Fair value measurements on recurring basis | Level 3      
Fair value of marketable securities      
Total 144 152  
Fair value measurements on recurring basis | Level 3 | Other (including restricted)      
Fair value of marketable securities      
Total 144 $ 152  
Boost Mobile Acquisition      
Fair value of marketable securities      
Spectrum purchase option fair value 713,000   $ 713,000
Spectrum Purchase Agreement      
Fair value of marketable securities      
Termination fee $ 72,000