Investment And Other Income (Tables)

6 Months Ended

Jun. 30, 2018

Investment And Other Income [Abstract]

Components Of Investment And Other Income

	For the three months ended				For the six months ended
	June 30,				June 30,
($ in millions)	2018		2017		2018		2017
Interest and dividend income	$	1	$	-	$	3	$	3
Pension and OPEB costs		5		-		10		(3)
All other, net		(1)		-		-		-
Total investment and other income, net	$	5	$	-	$	13	$	-