Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
INTEREST INCOME
Loans		$ 542	$ 531	$ 1,597	$ 1,576
Loans held for sale		10	4	29	13
Securities available for sale		75	67	217	210
Held-to-maturity securities		24	25	72	70
Trading account assets		5	6	15	19
Short-term investments		1	2	5	4
Other investments		4	4	14	16
Total interest income		661	639	1,949	1,908
INTEREST EXPENSE
Deposits		27	28	79	91
Federal funds purchased and securities sold under repurchase agreements			1		2
Bank notes and other short-term borrowings		2	2	6	6
Long-term debt		41	33	118	98
Total interest expense		70	64	203	197
NET INTEREST INCOME		591	575	1,746	1,711
Provision for credit losses		45	19	121	35
Net interest income after provision for credit losses		546	556	1,625	1,676
NONINTEREST INCOME
Trust and investment services income		108	99	328	291
Investment banking and debt placement fees		109	88	318	271
Service charges on deposit accounts		68	68	192	197
Operating lease income and other leasing gains		15	17	58	81
Corporate services income		57	42	143	125
Cards and payments income		47	42	136	123
Corporate-owned life insurance income		30	26	91	80
Consumer mortgage income		3	3	10	7
Mortgage servicing fees		11	9	33	35
Net gains (losses) from principal investing		11	9	51	60
Other income	[1]	11	14	35	37
Total noninterest income		470	417	1,395	1,307
NONINTEREST EXPENSE
Personnel		426	405	1,223	1,182
Net occupancy		60	66	191	198
Computer processing		41	39	121	118
Business services and professional fees		40	36	115	118
Equipment		22	25	66	73
Operating lease expense		11	11	34	31
Marketing		17	15	40	33
FDIC assessment		8	9	24	21
Intangible asset amortization		9	10	27	29
OREO expense, net		2	1	5	3
Other expense		88	89	258	251
Total noninterest expense		724	706	2,104	2,057
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		292	267	916	926
Income taxes		72	64	230	232
Income (loss) from continuing operations		220	203	686	694
Income (loss) from discontinued operations, net of taxes of ($2), ($10), $3, and ($24) (see Note 11)		(3)	(17)	5	(41)
NET INCOME (LOSS)		217	186	691	653
Less: Net income (loss) attributable to noncontrolling interests		(2)		1	6
NET INCOME (LOSS) ATTRIBUTABLE TO KEY		219	186	690	647
Income (loss) from continuing operations attributable to Key common shareholders		216	197	668	671
Net income (loss) attributable to Key common shareholders		$ 213	$ 180	$ 673	$ 630
Per common share:
Income (loss) from continuing operations attributable to Key common shareholders		$ 0.26	$ 0.23	$ 0.79	$ 0.77
Income (loss) from discontinued operations, net of taxes			(0.02)	0.01	(0.05)
Net income (loss) attributable to Key common shareholders	[2]	0.26	0.21	0.80	0.72
Per common share - assuming dilution:
Income (loss) from continuing operations attributable to Key common shareholders		0.26	0.23	0.78	0.76
Income (loss) from discontinued operations, net of taxes			(0.02)	0.01	(0.05)
Net income (loss) attributable to Key common shareholders	[2]	0.25	0.21	0.79	0.71
Cash dividends declared per common share		$ 0.075	$ 0.065	$ 0.215	$ 0.185
Weighted-average common shares outstanding (000)		831,430	867,350	839,758	875,728
Effect of convertible preferred stock		0	0	0	0
Effect of common share options and other stock awards		7,450	6,772	7,613	6,723
Weighted-average common shares and potential common shares outstanding (000)	[3]	838,880	874,122	847,371	882,451

[1] For each of the three months ended September 30, 2015, and September 30, 2014, net securities gains (losses) totaled less than $1 million. For the three months ended September 30, 2015, and September 30, 2014, we did not have any impairment losses related to securities.

[2] EPS may not foot due to rounding.

[3] Assumes conversion of common share options and other stock awards and/or convertible preferred stock, as applicable.