Condensed Combined Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 323	$ 547	$ 1,149	$ 1,792
Other Comprehensive Income (Loss), Net of Taxes:
Benefit plan net (loss) gain and prior service credit, net of amortization	(3)	4	(11)	15
Cumulative translation adjustment	(23)	40	129	(93)
Other comprehensive income (loss)	(26)	44	118	(78)
Comprehensive Income	$ 297	$ 591	$ 1,267	$ 1,714