Goodwill And Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill And Other Intangibles [Abstract]

Schedule Of Goodwill Activity

($ in millions)	Goodwill
Balance at January 1, 2016	$	7,166
CTF Acquisition (Note 3)		2,508
Balance at December 31, 2016		9,674
CTF Acquisition adjustment		98
Goodwill impairment		(2,748)
Balance at December 31, 2017	$	7,024

Components Of Other Intangibles

	2017						2016
($ in millions)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Other Intangibles:
Customer base	$	5,188	$	(3,294)	$	1,894	$	5,088	$	(2,604)	$	2,484
Trade name		122		-		122		122		-		122
Royalty agreement		72		(25)		47		72		(16)		56
Total other intangibles	$	5,382	$	(3,319)	$	2,063	$	5,282	$	(2,620)	$	2,662

Schedule Of Amortization Expense

	For the Year Ended
($ in millions)	2017		2016		2015
Amortization expense	$	699	$	643	$	337