Supplementary Information Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Sep. 30, 2022		Dec. 31, 2021	Sep. 30, 2021		Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 2,199		$ 4,459	$ 2,779
Total Cash, Cash Equivalents and Restricted Cash Equivalents	2,619	[1]	4,836	3,140	[1]	$ 3,873
Other Current Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash Equivalents	$ 420		$ 377	$ 361

[1] See page 16 for reconciliation of cash and cash equivalents and restricted cash equivalents presented in interim Consolidated Balance Sheets to total cash, cash equivalents and restricted cash equivalents presented in the interim Consolidated Statements of Cash Flows.