Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Marketable investment securities, restricted cash and other investment securities
Total current marketable investment securities	$ 538,775	$ 2,975,518
Total marketable investment securities	541,275	3,004,214
Restricted cash and cash equivalents	102,551	5,306,072
Total other investment securities	141,045	150,941
Total marketable investment securities, restricted cash and cash equivalents, and other investment securities	784,871	8,461,227
Current marketable investment securities - strategic - available-for-sale
Marketable investment securities, restricted cash and other investment securities
Total current marketable investment securities	144	152
Current marketable investment securities - strategic - trading/equity
Marketable investment securities, restricted cash and other investment securities
Total current marketable investment securities	1,455	1,895
Other investment securities
Marketable investment securities, restricted cash and other investment securities
Total current marketable investment securities	537,176	2,973,471
Other investment securities	141,045	150,941
Restricted Marketable Investment Securities [Member]
Marketable investment securities, restricted cash and other investment securities
Total marketable investment securities	$ 2,500	$ 28,696

Marketable investment securities, restricted cash and cash equivalent and other investment securities.

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Fair value and equity method investments.

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Amount of investment in marketable security.

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Amount of investment in marketable security, classified as current.

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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