Goodwill And Other Intangibles (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill And Other Intangibles [Abstract]

Components Of Other Intangibles

	March 31, 2019						December 31, 2018
	Gross Carrying		Accumulated		Net Carrying		Gross Carrying		Accumulated		Net Carrying
($ in millions)	Amount		Amortization		Amount		Amount		Amortization		Amount
Other Intangibles:
Customer base	$	5,188	$	(3,975)	$	1,213	$	5,188	$	(3,848)	$	1,340
Trade name		122		-		122		122		-		122
Royalty agreement		72		(43)		29		72		(40)		32
Total other intangibles	$	5,382	$	(4,018)	$	1,364	$	5,382	$	(3,888)	$	1,494

Amortization Expense

	For the three months ended March 31,
($ in millions)	2019		2018
Amortization expense	$	131	$	160