Unaudited Interim Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net earnings (loss)	$ 402	$ 228	$ 1,112	$ 645
Other comprehensive income (loss), net of tax
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	0	0	0	1
Foreign currency translation gain (loss)	(35)	42	(52)	148
Gain (loss) on cash flow hedges	4	0	9	(1)
Pension and postretirement benefits gain (loss)	0	(1)	1	4
Total other comprehensive income (loss), net of tax	(31)	41	(42)	152
Total comprehensive income (loss), net of tax	371	269	1,070	797
Comprehensive (income) loss attributable to noncontrolling interests	(1)	(2)	(4)	(5)
Comprehensive income (loss) attributable to Celanese Corporation	$ 370	$ 267	$ 1,066	$ 792