Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The following table shows the changes in the carrying amount of goodwill by reporting unit.

in millions	Key Community Bank		Key Corporate Bank		Total
BALANCE AT DECEMBER 31, 2014	$	979	$	78	$	1,057
Tax adjustment resulting from Pacific Crest Securities acquisition	—		3		3
BALANCE AT DECEMBER 31, 2015	979		81		1,060
Acquisition of First Niagara	1,109		277		1,386
BALANCE AT DECEMBER 31, 2016	$	2,088	$	358	$	2,446

Changes in the carrying amount of goodwill by reporting unit are presented in the following table:

in millions	Key Community Bank		Key Corporate Bank		Total
BALANCE AT DECEMBER 31, 2014	$	979	$	78	$	1,057
Tax adjustment resulting from Pacific Crest Securities acquisition	—		3		3
BALANCE AT DECEMBER 31, 2015	979		81		1,060
Acquisition of First Niagara	1,109		277		1,386
BALANCE AT DECEMBER 31, 2016	$	2,088	$	358	$	2,446

Gross Carrying Amount and Accumulated Amortization of Intangible Assets

The following table shows the gross carrying amount and the accumulated amortization of intangible assets subject to amortization:

	2016				2015
December 31, in millions	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Intangible assets subject to amortization:
Core deposit intangibles	$	461	$	125	$	105	$	91
PCCR intangibles	152		110		136		91
Other intangible assets(a)	74		68		76		70
Total	$	687	$	303	$	317	$	252