SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash, Cash Equivalents, and Restricted Cash Reconciliation (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,741	$ 3,266	$ 7,933
Restricted cash included in prepaid expenses and other	199	138	163
Noncurrent assets:
Restricted cash included in other noncurrent assets	455	69	473
Total cash, cash equivalents and restricted cash	$ 3,395	$ 3,473	$ 8,569	$ 10,055