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Commitments and Contingencies (Additional Information) (Details) € in Millions, R$ in Millions, $ in Millions				1 Months Ended									3 Months Ended
	Apr. 16, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 12, 2023 USD ($)	Apr. 30, 2025 USD ($)	Feb. 28, 2025 USD ($)	Dec. 31, 2024 USD ($)	Nov. 30, 2024 USD ($)	May 31, 2024 BRL (R$)	Oct. 31, 2023 EUR (€)	Sep. 30, 2023 USD ($)	Apr. 30, 2022 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2025 USD ($)
Environmental Loss Contingencies [Line Items]
Loss contingency accrual		$ 70				$ 72							$ 70
Minimum
Environmental Loss Contingencies [Line Items]
Environmental exit costs, reasonably possible additional loss													100
Maximum
Environmental Loss Contingencies [Line Items]
Environmental exit costs, reasonably possible additional loss													170
Groundwater Monitoring
Environmental Loss Contingencies [Line Items]
Environmental exit costs, anticipated cost										$ 32
Pending Litigation \| Avient
Environmental Loss Contingencies [Line Items]
Damages sought											$ 22
Antitrust Proceedings \| Direct Purchasers \| Settled Litigation
Environmental Loss Contingencies [Line Items]
Damages sought												$ 861
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		1,000				$ 1,397			€ 1,026
Ethylene Antitrust Litigation Proceedings \| TotalEnergies Petrochemicals & Refining SA \| Pending Litigation
Environmental Loss Contingencies [Line Items]
Damages sought					$ 625
Ethylene Antitrust Litigation Proceedings \| Dow Europe GmbH, Dow Chemical Iberica S.L., Dow Deutschland Anlagengesellschaft mbH and Dow Benelux B.V. \| Pending Litigation \| Subsequent Event
Environmental Loss Contingencies [Line Items]
Damages sought				$ 767
Triad Hunter Proceedings
Environmental Loss Contingencies [Line Items]
Loss contingency accrual		$ 76											$ 76
Triad Hunter Proceedings \| Subsequent Event
Environmental Loss Contingencies [Line Items]
Motion for partial relief from judgement	$ 30
Triad Hunter Proceedings \| Settled Litigation
Environmental Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party			$ 70
Litigation interest rate			5.00%
Brazilian Contractual Indemnification Lawsuit
Environmental Loss Contingencies [Line Items]
Damages awarded \| R$								R$ 550
Legal fee and procedural fine percent								20.00%
Sulphur Brine Dome
Environmental Loss Contingencies [Line Items]
Damages sought							$ 100