Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investments - Investments Measured at Fair Value On A Recurring Basis (Details) - Fair value measurements on recurring basis - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair value of marketable securities
Cash equivalents (including restricted)	$ 3,999,150	$ 1,692,849
Total	1,274,150	650,884
U.S. Treasury and agency securities
Fair value of marketable securities
Total	8,163	65,172
Commercial paper
Fair value of marketable securities
Total	596,568	290,398
Corporate securities
Fair value of marketable securities
Total	629,115	114,265
Other
Fair value of marketable securities
Total	13,850	4,844
Equity securities
Fair value of marketable securities
Equity securities	26,454	176,205
Level 1
Fair value of marketable securities
Cash equivalents (including restricted)	255,118	573,504
Total	34,617	231,653
Level 1 | U.S. Treasury and agency securities
Fair value of marketable securities
Total	8,163	65,172
Level 1 | Equity securities
Fair value of marketable securities
Equity securities	26,454	166,481
Level 2
Fair value of marketable securities
Cash equivalents (including restricted)	3,744,032	1,119,345
Total	1,239,482	419,087
Level 2 | Commercial paper
Fair value of marketable securities
Total	596,568	290,398
Level 2 | Corporate securities
Fair value of marketable securities
Total	629,115	114,265
Level 2 | Other
Fair value of marketable securities
Total	13,799	4,700
Level 2 | Equity securities
Fair value of marketable securities
Equity securities		9,724
Level 3
Fair value of marketable securities
Total	51	144
Level 3 | Other
Fair value of marketable securities
Total	$ 51	$ 144