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Shareholders' Equity (Details) (USD $)
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3 Months Ended | 0 Months Ended | 3 Months Ended | |||||
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2013
Stock Options [Member]
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Mar. 14, 2013
Common Stock [Member]
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May 01, 2013
Subsequent Event [Member]
8.20% Non-Cumulative Preferred Stock, Series H [Member]
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Apr. 02, 2013
Subsequent Event [Member]
8.625% Non-Cumulative Preferred Stock, Series 8 [Member]
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Jun. 30, 2013
Dividend Declared [Member]
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Mar. 31, 2013
Dividend Declared [Member]
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| Class of Stock [Line Items] | ||||||||
| Stock Repurchase Program, Authorized Amount | $ 5,000,000,000 | |||||||
| Cash dividends declared per common share | $ 0.01 | $ 0.01 | ||||||
| Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | 72,000,000 | |||||||
| Shares Paid for Tax Withholding for Share Based Compensation | 28,000,000 | |||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | 1,800,000,000 | |||||||
| Dividends, Preferred Stock | 373,000,000 | 325,000,000 | ||||||
| Stock Redeemed or Called During Period, Value | $ 2,900,000,000 | $ 2,700,000,000 | ||||||
| Preferred Stock, Dividend Rate, Percentage | 8.20% | 8.625% | ||||||
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Equity impact of aggregate cash, stock, and paid-in-kind dividends declared for preferred shareholders during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The percentage rate used to calculate dividend payments on preferred stock. No definition available.
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- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer. No definition available.
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| X | ||||||||||
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- Definition
Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Equity impact of the value of stock bought back by the entity at the exercise price or redemption price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount authorized by an entity's Board of Directors under a stock repurchase plan. No definition available.
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