Summary of Significant Accounting Policies - Schedule of Cash and Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Cash and cash equivalents	$ 15,296	$ 16,253	$ 18,324	$ 17,576
Restricted cash included in prepaid expenses and other current assets	384	294	294	345
Restricted cash included in other non-current assets	199	377	269	223
Total as presented in the consolidated statements of cash flows	$ 15,879	$ 16,924	$ 18,887	$ 18,144