Statement of Consolidated Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 258	$ 261	$ 470
Other comprehensive income (loss), net of tax
Change in unrecognized net actuarial loss and prior service cost (benefit) related to pension and other postretirement benefits	181	(46)	(388)
Foreign currency translation adjustments	(96)	58	(13)
Net change in unrealized gains on debt securities	0	0	3
Net change in unrecognized (losses) gains on cash flow hedges	(5)	4	(3)
Total Other comprehensive income (loss), net of tax	80	16	(401)
Comprehensive income	$ 338	$ 277	$ 69