Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 1,964	$ 1,902	$ 1,896
Other comprehensive income (loss), net of tax
Foreign currency translation gain (loss)	(213)	(217)	(11)
Gain (loss) on derivative hedges	(6)	21	13
Pension and postretirement benefits	(7)	7	(3)
Total other comprehensive income (loss), net of tax	(226)	(189)	(1)
Total comprehensive income (loss), net of tax	1,738	1,713	1,895
Comprehensive (income) loss attributable to noncontrolling interests	(4)	(8)	(6)
Comprehensive income (loss) attributable to Celanese Corporation	$ 1,734	$ 1,705	$ 1,889