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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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The cash inflow from the additional capital contribution to the entity.

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Number of new stock issued during the period.

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Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

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Value of stock (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 stock value of such awards forfeited. Stock 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.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Equity (Common Stock - Narrative) (Details) (USD $)	12 Months Ended			1 Months Ended
Equity (Common Stock - Narrative) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 31, 2014	Sep. 30, 2013	Oct. 31, 2012	Oct. 07, 2014	Sep. 11, 2013	Oct. 10, 2012
Business Acquisition [Line Items]
Common Stock, Shares, Issued	1,153,998,144us-gaap_CommonStockSharesIssued	1,125,224,024us-gaap_CommonStockSharesIssued
Proceeds from issuance of common stock	$ 1,000,000,000	$ 1,000,000,000	$ 1,000,000,000
Cost of shares issued	267,000,000	305,000,000	229,000,000
Class of Stock Disclosures [Abstract]
Stock Repurchase Program, Authorized Amount	1,000,000,000
Repurchase amount outstanding	1,300,000,000
Repurchase Shares	18,876,363us-gaap_TreasuryStockSharesAcquired	0us-gaap_TreasuryStockSharesAcquired	0us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Value, Acquired, Cost Method	1,000,000,000
Common Class A [Member]
Business Acquisition [Line Items]
Common Stock, Shares, Issued	22,907,960						22,907,960	22,679,955	28,231,956
Proceeds from issuance of common stock				1,000,000,000	1,000,000,000	1,000,000,000
October 2012 Common Stock Issuance [Member]
Business Acquisition [Line Items]
Proceeds from issuance of common stock	1,000,000,000	1,000,000,000	1,000,000,000
Common Shares Issued For Stock Options [Member]
Business Acquisition [Line Items]
Common stock, shares issued	5,866,160	7,663,446	5,497,752
Cost of shares issued	$ 220,000,000	$ 250,000,000	$ 171,000,000
Treasury Shares Issued For Stock Options [Member]
Business Acquisition [Line Items]
Issued Treasury Stock	0	0	0