Unaudited Interim Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net earnings (loss)	$ 228	$ 263	$ 645	$ 745
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	0	(1)	1	0
Foreign currency translation	42	(8)	148	38
Gain (loss) on cash flow hedges	0	0	(1)	1
Pension and postretirement benefits	(1)	0	4	(1)
Total other comprehensive income (loss), net of tax	41	(9)	152	38
Total comprehensive income (loss), net of tax	269	254	797	783
Comprehensive (income) loss attributable to noncontrolling interests	(2)	(1)	(5)	(5)
Comprehensive income (loss) attributable to Celanese Corporation	$ 267	$ 253	$ 792	$ 778