Goodwill And Other Intangibles (Tables)

3 Months Ended

Mar. 31, 2020

Goodwill And Other Intangibles [Abstract]

Components Of Other Intangibles

	March 31, 2020						December 31, 2019
	Gross Carrying		Accumulated		Net Carrying		Gross Carrying		Accumulated		Net Carrying
($ in millions)	Amount		Amortization		Amount		Amount		Amortization		Amount
Other Intangibles:
Customer base	$	4,332	$	(3,547)	$	785	$	4,332	$	(3,452)	$	880
Trade name		122		-		122		122		-		122
Royalty agreement		72		(58)		14		72		(54)		18
Total other intangibles	$	4,526	$	(3,605)	$	921	$	4,526	$	(3,506)	$	1,020

Amortization Expense

	For the three months ended March 31,
($ in millions)	2020		2019
Amortization expense	$	99	$	131