Restructuring and Related Reorganization Charges (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring and Related Activities [Abstract]
Restructuring and related reorganization changes	$ 78	$ 2	$ 206	$ 16
Restructuring and related cost, expected cost	$ 75		$ 75

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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