Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 11,063	$ 8,588
Cash, cash equivalents, restricted cash and restricted cash equivalents	12,967	10,465	$ 8,742	$ 9,196
Restricted Cash, Security Deposits
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and restricted cash equivalents	1,868	1,845
Restricted Cash, Prepaid Expense and Other Current Assets
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and restricted cash equivalents	$ 36	$ 32