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Supplemental Balance Sheet Data
 12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplemental Balance Sheet Data Supplemental Balance Sheet Data
Accounts Receivable—Net
Accounts receivable—net consist of the following:
 December 31,
 20232022
 (in millions)
Trade$459 $542 
Other46 40 
Accounts receivable—net$505 $582 
Inventories
Inventories consist of the following:
 December 31,
 20232022
 (in millions)
Finished goods$256 $437 
Raw materials, spare parts and supplies43 37 
Total inventories$299 $474 
Other Assets
Other assets consist of the following:
 December 31,
 20232022
 (in millions)
Spare parts$200 $180 
Nonqualified employee benefit trusts17 16 
Tax-related assets610 545 
Other40 30 
Total other assets$867 $771 
Tax-related assets include long-term receivables related to U.S. and Canadian transfer pricing and the related interest, and certain payments to Canadian taxing authorities. See Note 12—Income Taxes for additional information.
Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist of the following:
 December 31,
 20232022
 (in millions)
Accounts payable(1)
$114 $63 
Accrued capital expenditures(1)
48 39 
Accrued natural gas costs85 200 
Payroll and employee-related costs81 82 
Accrued interest30 30 
Other162 161 
Total accounts payable and accrued expenses$520 $575 
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(1)As of December 31, 2023 and 2022, accrued capital expenditures totaled $68 million and $53 million, respectively, of which $20 million and $14 million, respectively, are included within accounts payable in the table above.
Payroll and employee-related costs include accrued salaries and wages, vacation, benefits, incentive plans and payroll taxes.
Accrued interest includes interest payable on our outstanding senior notes. See Note 14—Financing Agreements and Note 15—Interest Expense for additional information.
Other includes accrued utilities, property and other taxes, sales incentives and other credits, accrued litigation settlement costs, and accrued maintenance and professional services.
Other Current Liabilities
As of December 31, 2023, other current liabilities of $42 million consists primarily of $35 million of unrealized loss on natural gas derivatives and $6 million for asset retirement obligations related to our Ince and Billingham complexes.
As of December 31, 2022, other current liabilities of $95 million consists primarily of $85 million of unrealized loss on natural gas derivatives and $6 million for asset retirement obligations related to our Ince complex.
See Note 7—United Kingdom Operations Restructuring and Impairment Charges, Note 17—Derivative Financial Instruments and Note 24—Asset Retirement Obligations for additional information.
Other Liabilities
Other liabilities consist of the following:
 December 31,
 20232022
 (in millions)
Benefit plans and deferred compensation$50 $92 
Tax-related liabilities247 267 
Unrealized loss on embedded derivative1 1 
Other16 15 
Other liabilities$314 $375 
Benefit plans and deferred compensation include liabilities for pensions, retiree medical benefits, and the noncurrent portion of incentive plans. See Note 13—Pension and Other Postretirement Benefits for additional information.
Tax-related liabilities include reserves for unrecognized tax benefits and the related interest. See Note 12—Income Taxes for additional information.