Supplementary Information Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021	[1]	Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and Cash Equivalents	$ 2,644		$ 3,191
Restricted Cash	514		427
Cash, Cash Equivalents, and Restricted Cash	3,158		3,618
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	$ 3,158	[1]	$ 3,618	[1]	$ 4,836		$ 3,873

[1] See page F-26 for reconciliation of cash and cash equivalents and restricted cash equivalents presented in the Consolidated Balance Sheets to total cash, cash equivalents and restricted cash equivalents presented in the Consolidated Statements of Cash Flows.