Supplementary Information Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2020		Dec. 31, 2019		Jun. 01, 2019	Dec. 31, 2018	[1],[2]	Dec. 31, 2017	[2]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and Cash Equivalents	$ 3,526		$ 1,764
Restricted Cash					$ 319
Cash, Cash Equivalents, and Restricted Cash	3,873		2,173
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	3,873	[1]	2,173	[1],[2]		$ 5,024		$ 7,914
Other Current Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash	$ 347		$ 409

[1] See page F-35 for reconciliation of cash and cash equivalents and restricted cash presented in Consolidated Balance Sheets to total cash, cash equivalents and restricted cash presented in the Consolidated Statements of Cash Flows.

[2] The cash flows for the years ended December 31, 2018 and 2019 includes cash flows of EID's ECP and Specialty Products Entities.