Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions			1 Months Ended			12 Months Ended
	May 22, 2019	Jun. 18, 2018	Apr. 30, 2022	Mar. 31, 2019	May 31, 2017	Dec. 31, 2022	Dec. 31, 2021
Environmental Loss Contingencies [Line Items]
Environmental loss contingency accrual						$ 55	$ 56
Avient
Environmental Loss Contingencies [Line Items]
Site Contingency, Percentage of Cost Potentially of Other Responsible Parties	100.00%
Pending Litigation
Environmental Loss Contingencies [Line Items]
Estimated Litigation Liability						$ 70
Pending Litigation | Avient
Environmental Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value			$ 22		$ 11
Site Contingency, Percentage of Cost Potentially of Other Responsible Parties						100.00%
Minimum
Environmental Loss Contingencies [Line Items]
Environmental Exit Costs, Reasonably Possible Additional Loss						$ 75
Maximum
Environmental Loss Contingencies [Line Items]
Environmental Exit Costs, Reasonably Possible Additional Loss						135
Cost of Implementation | Environmental Protection Agency
Environmental Loss Contingencies [Line Items]
Environmental Exit Costs, Anticipated Cost		$ 107
Operation and Maintenance | Environmental Protection Agency | Minimum
Environmental Loss Contingencies [Line Items]
Environmental Exit Costs, Anticipated Cost						1
Operation and Maintenance | Environmental Protection Agency | Maximum
Environmental Loss Contingencies [Line Items]
Environmental Exit Costs, Anticipated Cost						$ 3
Antitrust Proceedings | Direct Purchasers
Environmental Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value				$ 861
Antitrust Proceedings | Indirect Purchasers
Environmental Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value				$ 500