CONSOLIDATED FINANCIAL STATEMENT DETAILS - Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 2,822,729	$ 3,139,295	$ 2,217,337	$ 2,131,632
Restricted cash included in other current assets	867	654	1,635	1,633
Restricted cash included in other assets	398	409	416	420
Total cash and cash equivalents and restricted cash as shown on the consolidated statement of cash flows	$ 2,823,994	$ 3,140,358	$ 2,219,388	$ 2,133,685