Financial Instruments - Summary of Outstanding Commodity Derivative Contracts (Details)	6 Months Ended
	Jun. 30, 2022 MMBTU $ / gal $ / MMBTU gal
Natural gas swaps
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU	3,148,940
Benzene swaps
Derivative [Line Items]
Contracted volume | gal	3,916,502
Minimum | Natural gas swaps
Derivative [Line Items]
Contracted price range | $ / MMBTU	2.81
Minimum | Benzene swaps
Derivative [Line Items]
Contracted price range | $ / gal	3.12
Maximum | Natural gas swaps
Derivative [Line Items]
Contracted price range | $ / MMBTU	4.63
Maximum | Benzene swaps
Derivative [Line Items]
Contracted price range | $ / gal	4.13