Statement of Consolidated Comprehensive Income (Loss) (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 74	$ (96)	$ 154	$ 119
Other comprehensive income (loss), net of tax
Change in unrecognized net actuarial loss and prior service cost related to pension and other postretirement benefits	35	9	77	46
Foreign currency translation adjustments	18	(8)	(26)	(73)
Net change in unrealized losses on debt securities	0	(1)	0	0
Net change in unrecognized gains (losses) on cash flow hedges	4	9	8	(4)
Total Other comprehensive income (loss), net of tax	57	9	59	(31)
Comprehensive income (loss)	$ 131	$ (87)	$ 213	$ 88