Other Income (Expense), Net (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Abstract]
Loss on sale of business		$ (18)	$ 0	$ (18)	$ 0
Income from cash and cash investments		0	1	0	2
Equity investment income, net		0	0	2	0
Foreign currency transaction gains (losses)		2	2	2	(7)
Net periodic pension and post-retirement benefit cost (A)		(415)	(8)	(426)	(16)
Gain on preferred stock redemption	$ 14	14	0	14	0
Dividend income		3	4	6	4
Other items, net		(1)	(1)	(1)	(1)
Total other, net		$ (415)	$ (2)	$ (421)	$ (18)