Fair Value Election and Measurement Level 3 Significant Unobservable Input Assumptions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
level 3 fair value assumptions [Line Items]
Trading assets	$ 5,040		$ 6,227
Available-for-sale Securities	22,542		21,953
Loans Held-for-sale, Fair Value Disclosure	1,378		3,243
Loans Receivable, Fair Value Disclosure	302		379
Servicing Asset at Fair Value, Amount	1,300		899
Other Liabilities, Fair Value Disclosure	29	[1],[2]	31	[3],[4],[5]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Trading assets	72		190
Available-for-sale Securities	953		914
Loans Held-for-sale, Fair Value Disclosure	3		8
Loans Receivable, Fair Value Disclosure	302		379
Servicing Asset at Fair Value, Amount	1,300		899
Other Liabilities, Fair Value Disclosure	29	[1],[2]	31	[3],[4],[5]
Fair Value, Measurements, Recurring [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Other Assets, Fair Value Disclosure	8	[6]	132	[6]
Fair Value, Measurements, Recurring [Member] | Other Liabilities [Member] | Income Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
fair value inputs, loan production volume	0.00%		0.00%
Fair Value, Measurements, Recurring [Member] | Other Liabilities [Member] | Income Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
fair value inputs, loan production volume	150.00%		150.00%
Fair Value, Measurements, Recurring [Member] | Other Liabilities [Member] | Income Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
fair value inputs, loan production volume	92.00%		92.00%
Fair Value, Measurements, Recurring [Member] | Other Liabilities [Member] | Income Approach Valuation Technique [Member] | Loan Production Volume [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Other Liabilities, Fair Value Disclosure	23	[7]	24	[6]
Fair Value, Measurements, Recurring [Member] | Other Liabilities [Member] | Income Approach Valuation Technique [Member] | Revenue Run Rate [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Other Liabilities, Fair Value Disclosure	3	[7]	7	[6]
Fair Value, Measurements, Recurring [Member] | Equity Securities | Cost Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Available-for-sale Securities	739		633
Fair Value, Measurements, Recurring [Member] | Collateralized Debt Obligations [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Trading assets	54		52
Fair Value, Measurements, Recurring [Member] | Collateralized Debt Obligations [Member] | Market Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, indicative pricing based on overcollateralization ratio	42		33
Fair Value Inputs, Estimated Collateral Losses	32.00%		34.00%
Fair Value Inputs, Market Yield	5.00%
Fair Value, Measurements, Recurring [Member] | Collateralized Debt Obligations [Member] | Market Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, indicative pricing based on overcollateralization ratio	54		45
Fair Value Inputs, Estimated Collateral Losses	38.00%		45.00%
Fair Value Inputs, Market Yield	7.00%
Fair Value, Measurements, Recurring [Member] | Collateralized Debt Obligations [Member] | Market Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, indicative pricing based on overcollateralization ratio	48		40
Fair Value Inputs, Estimated Collateral Losses	34.00%		39.00%
Fair Value Inputs, Market Yield	6.00%
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Trading assets	6		5
Available-for-sale Securities	21		21
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities [Member] | Market Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Indicative Pricing	55		45
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities [Member] | Market Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Indicative Pricing	55		45
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities [Member] | Market Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Indicative Pricing	55		45
Fair Value, Measurements, Recurring [Member] | Other Debt Obligations [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Trading assets			1
Fair Value, Measurements, Recurring [Member] | Other Debt Obligations [Member] | Cost Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Available-for-sale Securities	5		5
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Available-for-sale Securities	34		46
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Market Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Indicative Pricing	80		72
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Market Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Indicative Pricing	108		115
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Market Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Indicative Pricing	94		92
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Available-for-sale Securities	154		209
Fair Value, Measurements, Recurring [Member] | Residential Mortgage, Loans Held For Sale [Member] | Income Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Loans Held-for-sale, Fair Value Disclosure	3		8
Fair Value, Measurements, Recurring [Member] | Residential Mortgage, Loans Held For Sale [Member] | Income Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Option Adjusted Spread	2.50%		0.00%
Fair Value Inputs, Conditional Prepayment Rate	2.00%		5.00%
Fair Value Inputs, Probability of Default	0.00%		0.00%
Fair Value, Measurements, Recurring [Member] | Residential Mortgage, Loans Held For Sale [Member] | Income Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Option Adjusted Spread	6.75%		6.22%
Fair Value Inputs, Conditional Prepayment Rate	11.00%		30.00%
Fair Value Inputs, Probability of Default	4.00%		20.00%
Fair Value, Measurements, Recurring [Member] | Residential Mortgage, Loans Held For Sale [Member] | Income Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Option Adjusted Spread	3.60%		2.51%
Fair Value Inputs, Conditional Prepayment Rate	6.00%		15.00%
Fair Value Inputs, Probability of Default	1.00%		3.50%
Fair Value, Measurements, Recurring [Member] | Loans Held For Investment [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Loans Receivable, Fair Value Disclosure	10		10
Fair Value, Measurements, Recurring [Member] | Loans Held For Investment [Member] | Income Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Loans Receivable, Fair Value Disclosure	292		369
Fair Value, Measurements, Recurring [Member] | Loans Held For Investment [Member] | Income Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Option Adjusted Spread	0.00%		0.00%
Fair Value Inputs, Conditional Prepayment Rate	1.00%		5.00%
Fair Value Inputs, Probability of Default	0.00%		0.00%
Fair Value, Measurements, Recurring [Member] | Loans Held For Investment [Member] | Income Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Option Adjusted Spread	6.75%		6.22%
Fair Value Inputs, Conditional Prepayment Rate	35.00%		30.00%
Fair Value Inputs, Probability of Default	8.00%		20.00%
Fair Value, Measurements, Recurring [Member] | Loans Held For Investment [Member] | Income Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Option Adjusted Spread	3.01%		2.51%
Fair Value Inputs, Conditional Prepayment Rate	12.00%		15.00%
Fair Value Inputs, Probability of Default	3.00%		3.50%
Fair Value, Measurements, Recurring [Member] | Mortgage Servicing Rights [Member] | Income Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Servicing Asset at Fair Value, Amount	$ 1,300		$ 899
Fair Value, Measurements, Recurring [Member] | Mortgage Servicing Rights [Member] | Income Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Conditional Prepayment Rate	5.00%		6.00%
Fair Value Inputs, Discount Rate	8.00%		9.00%
Fair Value, Measurements, Recurring [Member] | Mortgage Servicing Rights [Member] | Income Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Conditional Prepayment Rate	26.00%		31.00%
Fair Value Inputs, Discount Rate	28.00%		28.00%
Fair Value, Measurements, Recurring [Member] | Mortgage Servicing Rights [Member] | Income Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Conditional Prepayment Rate	9.00%		16.00%
Fair Value Inputs, Discount Rate	12.00%		11.00%
Fair Value, Measurements, Recurring [Member] | Other Assets [Member] | Market Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Pull Through Rate	1.00%		9.00%
Fair Value Inputs, Msr Value	0.11%		0.06%
Fair Value, Measurements, Recurring [Member] | Other Assets [Member] | Market Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Pull Through Rate	99.00%		98.00%
Fair Value Inputs, Msr Value	2.33%		2.44%
Fair Value, Measurements, Recurring [Member] | Other Assets [Member] | Market Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
level 3 fair value assumptions [Line Items]
Fair Value Inputs, Pull Through Rate	73.00%		71.00%
Fair Value Inputs, Msr Value	1.04%		1.04%

[1] Includes contingent consideration obligations related to acquisitions, as well as the derivative associated with the Company's sale of Visa shares during the year ended December 31, 2009.

[2] 2 These amounts include IRLCs and derivative financial instruments entered into by the Mortgage Banking segment to hedge its interest rate risk. See Note 16, "Derivative Financial Instruments," for further disaggregation of derivative assets and liabilities

[3] 5 Includes contingent consideration obligations related to acquisitions, as well as the derivative associated with the Company's sale of Visa shares during the year ended December 31, 2009.

[4] 3 Certain derivative assets of $178 million and derivative liabilities of $15 million have been reclassified to trading assets and derivatives and trading liabilities and derivatives, respectively, at December 31, 2012, for comparability to the same classification of these assets and liabilities at December 31, 2013. Previously, these derivative assets and liabilities were recorded in other assets and other liabilities, respectively.

[5] These amounts include IRLCs and derivative financial instruments entered into by the Mortgage Banking segment to hedge its interest rate risk. See Note 16, "Derivative Financial Instruments," for further disaggregation of derivative assets and liabilities.

[6] 3 Not meaningful.

[7] Input assumptions relate to the Company's contingent consideration obligations related to acquisitions. Excludes $3 million of Other Liabilities. See Note 17, "Guarantees," for additional information.