Additional premium received for stock option in percentage.

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Deferred Compensation Arrangement With Individual Number Of Shares Available For Grant.

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No definition available.

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Director Match Feature

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- Definition

Exchange ratio to calculate number of shares to be received by acquiree company on merger.

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Number of restricted stock units award.

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- Definition

Number of stock based compensation programs.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Aggregate Grant Date Fair Value

+ References

No definition available.

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Share based compensation arrangement by share based payment award options weighted average vesting period.

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Topic 718

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The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable within one year (or the operating cycle, if longer).

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

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- Definition

Aggregate cash paid by the entity during the period to settle equity instruments granted under equity-based payment arrangements.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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

-Publisher FASB

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-Glossary Financing Activities

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Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Stock-Based Compensation Plans (Details Textuals) (USD $)	12 Months Ended
	Dec. 31, 2011 Forms	Dec. 31, 2010	Dec. 31, 2009	Feb. 24, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exchange ratio				0.667
Number of stock based compensation programs	4
Maximum limit of total stock awards	29,100,000
Stock-based compensation award vesting period	two months to ten years
Stock-based compensation award number of shares available for future	5,600,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 14,000,000	$ 11,000,000	$ 9,000,000
Number Of Restricted Stock Units Award	2
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance	1,700,000
Deferred Compensation Arrangement With Individual Number Of Shares Available For Grant	1,075,080
EDCP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	4,000,000	(3,000,000)	(200,000)
Additional Premium Received For Stock Option		20.00%
DCPD
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	4,000,000	4,000,000	3,000,000
Director Match Feature		20.00%
Net liability of stock option	6,000,000	5,000,000	5,000,000
Restricted Stock and Restricted Stock Units Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted	915,054
Grant-date fair value	34,000,000
Stock option weighted-average vesting period	2.76
Compensation expense (income)	65,000,000	22,000,000	25,000,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation award vesting period	3 years
Compensation expense (income)	2,000,000	(4,000,000)	3,000,000
Employee Service Share-based Compensation, Cash Flow Effect, Cash Used to Settle Awards	0	0	15,000,000
ESOP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	55,000,000	30,000,000	36,000,000
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant-date fair value	3,000,000
Stock option weighted-average vesting period	3.79
Compensation expense (income)	800,000	0	0
Proceeds from Stock Options Exercised	$ 32,000,000	$ 6,000,000	$ 7,000,000