Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Key's and KeyBank's Actual Capital Amounts and Ratios, Minimum Capital Amounts and Ratios

At December 31, 2014, Key and KeyBank (consolidated) had regulatory capital in excess of all current minimum risk-based capital (including all adjustments for market risk) and leverage ratio requirements as shown in the following table.

	Actual					To Meet Minimum Capital Adequacy Requirements					To Qualify as Well Capitalized Under Federal Deposit Insurance Act
dollars in millions	Amount		Ratio			Amount		Ratio			Amount		Ratio
December 31, 2014
TOTAL CAPITAL TO NET RISK-WEIGHTED ASSETS
Key	$	11,824		13.89	%	$	6,808		8.00	%		N/A		N/A
KeyBank (consolidated)		10,833		13.49			6,425		8.00		$	8,031		10.00	%
TIER 1 CAPITAL TO NET RISK-WEIGHTED ASSETS
Key	$	10,124		11.90	%	$	3,404		4.00	%		N/A		N/A
KeyBank (consolidated)		9,151		11.39			3,213		4.00		$	4,819		6.00	%
TIER 1 CAPITAL TO AVERAGE QUARTERLY TANGIBLE ASSETS
Key	$	10,124		11.26	%	$	2,698		3.00	%		N/A		N/A
KeyBank (consolidated)		9,151		10.38			3,526		4.00		$	4,407		5.00	%
December 31, 2013
TOTAL CAPITAL TO NET RISK-WEIGHTED ASSETS
Key	$	11,941		14.33	%	$	6,666		8.00	%		N/A		N/A
KeyBank (consolidated)		10,451		13.33			6,273		8.00		$	7,841		10.00	%
TIER 1 CAPITAL TO NET RISK-WEIGHTED ASSETS
Key	$	9,968		11.96	%	$	3,333		4.00	%		N/A		N/A
KeyBank (consolidated)		8,496		10.83			3,136		4.00		$	4,705		6.00	%
TIER 1 CAPITAL TO AVERAGE QUARTERLY TANGIBLE ASSETS
Key	$	9,968		11.11	%	$	2,691		3.00	%		N/A		N/A
KeyBank (consolidated)		8,496		9.69			3,507		4.00		$	4,384		5.00	%