Commitments and Contingencies (Additional Information) (Detail) - USD ($) $ in Millions					1 Months Ended					3 Months Ended
	Oct. 16, 2023	Sep. 12, 2023	May 22, 2019	Jun. 18, 2018	Oct. 31, 2023	Sep. 30, 2023	Apr. 30, 2022	Mar. 31, 2019	May 31, 2017	Mar. 31, 2024	Dec. 31, 2023
Environmental Loss Contingencies [Line Items]
Environmental loss contingency accrual										$ 57	$ 58
Avient
Environmental Loss Contingencies [Line Items]
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										125
Maximum
Environmental Loss Contingencies [Line Items]
Environmental exit costs, reasonably possible additional loss										$ 200
Groundwater Monitoring
Environmental Loss Contingencies [Line Items]
Environmental exit costs, anticipated cost						$ 14
EPA | Operation and Maintenance | Minimum
Environmental Loss Contingencies [Line Items]
Environmental exit costs, anticipated cost				$ 1
EPA | Operation and Maintenance | Maximum
Environmental Loss Contingencies [Line Items]
Environmental exit costs, anticipated cost				3
EPA | Cost of Implementation
Environmental Loss Contingencies [Line Items]
Environmental exit costs, anticipated cost				$ 107
Pending Litigation | Avient
Environmental Loss Contingencies [Line Items]
Damages sought							$ 22		$ 11
Site contingency, percentage of cost potentially of other responsible parties										100.00%
Antitrust Proceedings | Direct Purchasers | Settled Litigation
Environmental Loss Contingencies [Line Items]
Damages sought								$ 861
Litigation settlement, amount awarded to other party	$ 19
Antitrust Proceedings | Indirect Purchasers | Settled Litigation
Environmental Loss Contingencies [Line Items]
Damages sought								$ 500
Ethylene Antitrust Litigation Proceedings | Pending Litigation
Environmental Loss Contingencies [Line Items]
Damages sought					$ 1,026
Triad Hunter Proceedings | Settled Litigation
Environmental Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party		$ 70
Petro 2 Flash Fire And EDC Storage Tank Explosion
Environmental Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party										$ 150
Environmental loss contingency accrual										151
Loss Contingency, Damages Awarded, Value										382
Loss Contingency, Receivable										13
Petro 2 Flash Fire And EDC Storage Tank Explosion | Insurance Claims
Environmental Loss Contingencies [Line Items]
Damages sought										$ 150