Equity Method Investements (Details) lb in Millions, $ in Millions		1 Months Ended	12 Months Ended
	Jun. 17, 2015 lb	Jan. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) lb	Dec. 31, 2020 USD ($) lb	Dec. 31, 2019 USD ($)	Nov. 12, 2019 USD ($)	Oct. 28, 2019
Schedule of Equity Method Investments [Line Items]
Investments in joint ventures				$ 225
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity			$ 166
Return of investment			0	(44)	$ 0
Equity method investments			$ 1,007	$ 1,059
LACC, LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest (in percent)						34.80%	12.00%
Increase in Equity Method Investment						$ 817
Investments in and Advances to Affiliates, Proportionate Share Of Production, Mass | lb			909	787
Investments in and Advances to Affiliates, at Fair Value			$ 943	$ 961	$ 1,038
Cash contributions			22	4
Depreciation and amortization			(40)	(37)
Return of investment				(44)
LACC, LLC | Subsequent Event
Schedule of Equity Method Investments [Line Items]
Increase in Equity Method Investment		$ 90
Equity Method Investment, Additional Information		3.2
other equity method investments
Schedule of Equity Method Investments [Line Items]
Equity method investments			64	98
Affiliates
Schedule of Equity Method Investments [Line Items]
Plant capacity (in lbs) | lb	2,200
Lotte Chemical Corporation
Schedule of Equity Method Investments [Line Items]
Revenue, Remaining Performance Obligation, Amount			76
Contract with Customer, Liability			$ 18	12
LACC, LLC
Schedule of Equity Method Investments [Line Items]
Related Party Transaction, Reimbursement Agreement, Term			6 years 6 months
Revenue, Remaining Performance Obligation, Amount			$ 55
Contract with Customer, Liability			$ 14	$ 10
LACC, LLC | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Schedule of Equity Method Investments [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period			25 years