Debt (Tables)

9 Months Ended

Sep. 30, 2026

Debt Disclosure [Abstract]

Schedule of Short-term Debt

	As of September 30, 2026	As of December 31, 2025
	(In $ millions)
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Current installments of long-term debt	1,324	1,114
Short-term borrowings, including amounts due to affiliates(1)	90	47
Revolving credit facilities(2)	—	43
Total	1,414	1,204

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(1)The weighted average interest rate was 2.2% and 2.2% as of September 30, 2026 and December 31, 2025, respectively.

(2)The weighted average interest rate was 0.0% and 3.1% as of September 30, 2026 and December 31, 2025, respectively.

Schedule of Long-term Debt

	As of September 30, 2026	As of December 31, 2025
	(In $ millions)
Long-Term Debt
Senior unsecured notes due 2026, interest rate of 1.400%	—	400
Senior unsecured notes due 2026, interest rate of 5.277%(1)	—	526
Senior unsecured notes due 2027, interest rate of 2.125%	568	587
Senior unsecured notes due 2027, interest rate of 7.165%(1)	554	554
Senior unsecured notes due 2028, interest rate of 0.625%	568	587
Senior unsecured notes due 2028, interest rate of 7.350%(1)	746	746
Senior unsecured notes due 2029, interest rate of 6.337%(1)	568	588
Senior unsecured notes due 2029, interest rate of 7.330%(1)	750	750
Senior unsecured notes due 2030, interest rate of 6.500%	700	700
Senior unsecured notes due 2030, interest rate of 7.550%(1)	999	999
Senior unsecured notes due 2031, interest rate of 7.000%	600	600
Senior unsecured notes due 2031, interest rate of 5.000%	852	881
Senior unsecured notes due 2032, interest rate of 7.379%(1)	1,000	1,000
Senior unsecured notes due 2033, interest rate of 7.700%(1)	1,000	1,000
Senior unsecured notes due 2033, interest rate of 6.750%	1,100	1,100
Senior unsecured notes due 2034, interest rate of 7.375%	800	800
Pollution control and industrial revenue bonds due at various dates through 2030(2)	85	85
Bank loans due at various dates through 2031(3)	538	582
Obligations under finance leases due at various dates through 2054	117	129
Subtotal	11,545	12,614
Unamortized deferred financing costs(4)	(90)	(106)
Current installments of long-term debt	(1,324)	(1,114)
Total	10,131	11,394

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(1)In February 2025, Moody's Ratings downgraded the Company's credit rating, which had the effect of increasing interest rates by 25 basis points on certain senior unsecured notes, effective on various dates beginning May 15, 2025 through January 19, 2026.

In November 2025, S&P Global Ratings and Moody's Ratings downgraded the Company's credit rating, which together had the effect of increasing interest rates for certain senior unsecured notes by an additional 50 basis points, effective on various dates beginning January 15, 2026 through May 15, 2026.

(2)Interest rates range from 4.1% to 4.3%.

(3)The weighted average interest rate was 2.4% and 2.4% as of September 30, 2026 and December 31, 2025, respectively.

(4)Related to the Company's long-term debt, excluding obligations under finance leases.

Schedule of Line of Credit Facilities

Certain of the Company's subsidiaries in China (Celanese (Shanghai) International Trading Co., Ltd ("CSIT") and Celanese (Nanjing) Chemical Co., Ltd. ("CNCC") have outstanding senior unsecured bank obligations (collectively, the "China Credit Facilities") as follows:

Subsidiary	Loan Origination Date	Maturity	Borrowing Capacity		Interest Rate	As of September 30, 2026
			(In CNY millions)		(In percentages)	(In CNY millions)	(In $ millions)
CSIT	January 4, 2023	January 13, 2026	400	(1)	2.700	—	—
CNCC	January 6, 2023	December 25, 2026	800	(2)	2.340	100	15
CSIT	March 26, 2026	February 7, 2027	100	(2)	2.220	100	15
CSIT	May 6, 2026	February 7, 2027	100	(2)	2.220	100	15
CNCC	July 18, 2025	June 17, 2027	200	(2)	2.340	160	24
CNCC	June 28, 2024	June 28, 2027	800	(2)	2.340	640	95
CNCC	January 15, 2025	December 21, 2027	500	(3)	2.440	425	63
CNCC	March 6, 2025	March 6, 2028	750	(2)	2.340	638	95
CNCC	November 1, 2024	June 9, 2028	1,000	(2)	2.350	690	103
CNCC	October 20, 2025	July 3, 2028	300	(2)	2.340	270	40
CNCC	October 20, 2025	October 20, 2028	300	(2)	2.340	285	43
CNCC	March 10, 2026	March 11, 2031	600	(4)	2.410	248	37
CNCC	March 26, 2026	April 15, 2031	950	(4)	2.410	100	15
Total						3,756	560

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(1)Revolving credit facility guaranteed by Celanese U.S. (the "CSIT Revolving Credit Facility"), which bears interest at a fixed rate. The CSIT Revolving Credit Facility was fully repaid on January 13, 2026.

(2)Senior unsecured working capital loan bearing interest at certain floating interest rates.

(3)Senior unsecured working capital loan bearing interest at a fixed interest rate.

(4)Senior unsecured term loan credit agreement bearing interest at certain floating interest rates.

The Company's debt balances and amounts available for borrowing under its senior unsecured revolving credit facilities are as follows:

	As of September 30, 2026
	(In $ millions)
U.S. Revolving Credit Facility
Borrowings outstanding	—
Available for borrowing	1,750
China Revolving Credit Facilities
Borrowings outstanding	—
Available for borrowing	75

Transfer of Financial Assets Accounted for as Sales

The Company's activity under the accounts receivable purchasing facilities is as follows:

	Nine Months Ended September 30, 2026	Year Ended December 31, 2025
	(In $ millions)
U.S. Receivables Purchase Facility(1)
Accounts receivable de-recognized	1,142	1,471
Accounts receivable collected	1,100	1,500
European Receivables Purchase and Financing Facility(2)
Accounts receivable de-recognized	652	—
Accounts receivable collected	371	—

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(1)Unsold U.S. accounts receivable of $104 million were pledged by the U.S. SPE as collateral to the U.S. Purchasers as of September 30, 2026.

(2)Unsold EU accounts receivable of $267 million were pledged by the EU SPE as collateral to the EU Purchasers as of September 30, 2026.