Unaudited Interim Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net earnings (loss)	$ 233	$ 223	$ 417	$ 482
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities	1	0	1	1
Foreign currency translation	78	(18)	106	46
Gain (loss) on cash flow hedges	1	1	(1)	1
Pension and postretirement benefits	0	(1)	5	(1)
Total other comprehensive income (loss), net of tax	80	(18)	111	47
Total comprehensive income (loss), net of tax	313	205	528	529
Comprehensive (income) loss attributable to noncontrolling interests	(2)	(2)	(3)	(4)
Comprehensive income (loss) attributable to Celanese Corporation	$ 311	$ 203	$ 525	$ 525