Summary of Significant Accounting Policies - Schedule of Cash and Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Cash and cash equivalents	$ 16,139	$ 16,398	$ 16,253
Restricted cash included in prepaid expenses and other current assets	494	543	294
Restricted cash included in other non-current assets	404	248	377
Total as presented in the consolidated statements of cash flows	$ 17,037	$ 17,189	$ 16,924	$ 18,144