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Other Income (Expense), Net - Components of Other Income (Expense) (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Component of Other Income [Line Items]
Leasing, contract services and miscellaneous income		$ 20	$ 51	$ 79
Settlement loss	$ 380	14	381	(18)
Netherlands Pension Plan [Member]
Component of Other Income [Line Items]
Settlement loss			380
European Union [Member] | Fluorinated Greenhouse Gas [Member]
Component of Other Income [Line Items]
Leasing, contract services and miscellaneous income		3	41	67
Oakley California Site [Member]
Component of Other Income [Line Items]
Gain on sale of asset		$ 6
Repauno, New Jersey Sites [Member]
Component of Other Income [Line Items]
Gain on sale of asset			$ 9
East Chicago, Indiana [Member]
Component of Other Income [Line Items]
Gain on sale of asset				3
Linden, New Jersey Sites [Member]
Component of Other Income [Line Items]
Gain on sale of asset				$ 42

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