Supplementary Information Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Sep. 30, 2020		Dec. 31, 2019	Sep. 30, 2019		Jun. 01, 2019	Dec. 31, 2018	[2]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 2,768		$ 1,764	$ 1,980
Restricted Cash						$ 319
Cash, Cash Equivalents and Restricted Cash, Total Company	3,122	[1]	2,173	2,400	[1],[2]		$ 5,024
Other Current Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash	$ 354		$ 409	$ 420

[1] See page 20 for reconciliation of cash and cash equivalents and restricted cash presented in interim Condensed Consolidated Balance Sheets to total cash, cash equivalents and restricted cash presented in the interim Condensed Consolidated Statements of Cash Flows.

[2] The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.