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Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2016

Regulatory Capital Requirements [Abstract]

Summary of Capital Amounts and Ratios

The Company's and the Bank's capital amounts and ratios are presented in the following tables.



		U.S. Basel III									Minimum Capital Requirement with Capital Conservation Buffer ⁽¹⁾
(Dollars in millions)		Amount				Ratio					Amount				Ratio
Capital Ratios for the Company:
As of December 31, 2016:
Common equity tier 1 capital (to risk-weighted assets)		$	14,757			14.77	%		≥		$	5,120			5.125	%
Tier 1 capital (to risk-weighted assets)		14,757				14.77			≥		6,619				6.625
Total capital (to risk-weighted assets)		16,431				16.45			≥		8,617				8.625
Tier 1 leverage⁽²⁾		14,757				9.92			≥		5,952				4.000
As of December 31, 2015⁽³⁾:
Common equity tier 1 capital (to risk-weighted assets)		$	12,920			13.63	%		≥		$	4,265			4.500	%
Tier 1 capital (to risk-weighted assets)		12,923				13.64			≥		5,687				6.000
Total capital (to risk-weighted assets)		14,747				15.56			≥		7,582				8.000
Tier 1 leverage⁽²⁾		12,923				11.40			≥		4,535				4.000


(1)	Beginning January 1, 2016, the minimum capital requirement includes a capital conservation buffer of 0.625%.


(2)	Tier 1 capital divided by quarterly average assets (excluding certain deductions).


(3)	Prior period amounts and ratios have not been revised to include the transferred IHC entities.



		U.S. Basel III									Minimum Capital Requirement with Capital Conservation Buffer ⁽¹⁾									To Be Well-Capitalized Under Prompt Corrective Action Provisions
(Dollars in millions)		Amount				Ratio					Amount				Ratio					Amount				Ratio
Capital Ratios for the Bank:
As of December 31, 2016 (U.S. Basel III):
Common equity tier 1 capital (to risk-weighted assets)		$	13,056			14.61	%		≥		$	4,581			5.125	%		≥		$	5,810			6.5	%
Tier 1 capital (to risk-weighted assets)		13,056				14.61			≥		5,922				6.625			≥		7,151				8.0
Total capital (to risk-weighted assets)		14,560				16.29			≥		7,709				8.625			≥		8,938				10.0
Tier 1 leverage⁽²⁾		13,056				11.46			≥		4,558				4.000			≥		5,697				5.0
As of December 31, 2015 (U.S. Basel III):
Common equity tier 1 capital (to risk-weighted assets)		$	12,384			13.18	%		≥		$	4,227			4.500	%		≥		$	6,105			6.5	%
Tier 1 capital (to risk-weighted assets)		12,384				13.18			≥		5,636				6.000			≥		7,514				8.0
Total capital (to risk-weighted assets)		14,003				14.91			≥		7,514				8.000			≥		9,393				10.0
Tier 1 leverage⁽²⁾		12,384				11.03			≥		4,490				4.000			≥		5,612				5.0


(1)	Beginning January 1, 2016, the minimum capital requirement includes a capital conservation buffer of 0.625%.


(2)	Tier 1 capital divided by quarterly average assets (excluding certain deductions).