Investment And Other Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2019

Investment And Other Income (Loss) [Abstract]

Components Of Investment And Other Income

	For the three months ended				For the six months ended
	June 30,				June 30,
($ in millions)	2019		2018		2019		2018
Interest and dividend income	$	1	$	1	$	4	$	3
Pension and OPEB benefit (costs)		(11)		5		(22)		10
All other, net		1		(1)		-		-
Total investment and other income (loss), net	$	(9)	$	5	$	(18)	$	13