Aggregate dividends declared during the period for each share of common stock outstanding.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

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- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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-Publisher FASB

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-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28)

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-Name Regulation S-X (SX)

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-Section 02

-Paragraph 29

-Article 5

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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- Definition

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

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Topic 505

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-Name Accounting Standards Codification

-Topic 505

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-Paragraph 1

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Stockholders' Equity (Details) (USD $)	3 Months Ended		6 Months Ended				12 Months Ended			0 Months Ended
Stockholders' Equity (Details) (USD $)	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 05, 2015	Nov. 06, 2013	Jul. 30, 2014
Equity, Class of Treasury Stock
Share repurchases, value							$ 500,000,000	$ 436,000,000	$ 126,000,000
Preferred Stock
Preferred stock, authorized shares (shares)			5,000,000us-gaap_PreferredStockSharesAuthorized		5,000,000us-gaap_PreferredStockSharesAuthorized		5,000,000us-gaap_PreferredStockSharesAuthorized	5,000,000us-gaap_PreferredStockSharesAuthorized
Preferred Stock, Par or Stated Value Per Share			$ 0		$ 0		$ 0	$ 0
Preferred stock, shares issued (shares)			0us-gaap_PreferredStockSharesIssued		0us-gaap_PreferredStockSharesIssued		0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Cash Dividends
Dividend payments							(141,000,000)us-gaap_PaymentsOfDividends	(121,000,000)us-gaap_PaymentsOfDividends	(38,000,000)us-gaap_PaymentsOfDividends
Dividends per share declared (dollars per share)	$ 0.15	$ 0.12	$ 0.30	$ 0.25	$ 0.25	$ 0.20	$ 1.10	$ 0.90	$ 0.27
Subsequent Event
Cash Dividends
Dividends per share declared (dollars per share)										$ 0.425
Dividend declared date										Feb. 05, 2015
Dividends Payable, Date of Record										Feb. 27, 2015
Dividends Payable, Date to be Paid										Mar. 13, 2015
2013 Share repurchase program
Equity, Class of Treasury Stock
Share repurchases (shares)							8,400,000	8,400,000
Share repurchases, value							500,000,000	436,000,000
Share repurchase program, authorized amount											1,000,000,000
2014 Share repurchase program
Equity, Class of Treasury Stock
Share repurchase program, authorized amount												$ 1,000,000,000