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Financial Instruments - Consolidated Statements of Cash Flows Reconciliation (Details) - USD ($) $ in Millions	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Cash and cash equivalents	$ 57,741		$ 78,779
Restricted cash included in accounts receivable, net and other	356		247
Restricted cash included in other assets	3,356		3,286
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows	$ 61,453	$ 69,893	$ 82,312	$ 71,673	$ 73,332	$ 73,890	$ 50,067