Benefit Obligations (Plan Assets Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2022	Nov. 30, 2020	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Oct. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Unrecognized Tax Benefit, Decrease resulting from changes in uncertain tax position and impacts of amended tax return filings				$ 63	$ 65	$ 40
Asset transfers between wholly owned foreign affiliates	$ 800	$ (170)		$ (816)	$ 0	$ (170)
Polyplastics Co., Ltd. [Member] | Engineered Materials [Member]
Defined Benefit Plan Disclosure [Line Items]
Equity ethod Investment, Ownership Percentage							45.00%
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets				5.40%	6.30%	6.50%
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	27			$ 27
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 4			$ 4
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets				(19.50%)
Expected return on plan assets				5.50%	6.50%	6.70%
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets				4.90%	4.80%	5.10%
Forecast [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets			5.50%