v2.4.0.6

Share-Based Compensation (Summary Of Outstanding Stock Options, Including Changes During The Year) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Share-Based Compensation [Abstract]
Options, Outstanding at December 31, 2010	11,434
Options, Granted	1,962
Options, Exercised	(2,366)
Options, Forfeited	(487)
Options, Outstanding at December 31, 2011	10,543
Options, Vested and expected to vest at December 31, 2011	10,428
Options, Exercisable at December 31, 2011	6,716
Weighted Average Exercise Price, Outstanding at December 31, 2010	$ 62.64
Weighted Average Exercise Price, granted	$ 66.98
Weighted Average Exercise Price, exercised	$ 47.51
Weighted Average Exercise Price, forfeited	$ 73.32
Weighted Average Exercise Price, Outstanding at December 31, 2011	$ 66.35
Weighted Average Exercise Price, Vested and expected to vest at December 31, 2011	$ 66.33
Weighted Average Exercise Price, Exercisable at December 31, 2011	$ 65.39
Weighted Average Remaining Contractual Term, Outstanding at December 31, 2011	4.31
Weighted Average Remaining Contractual Term, Vested and expected to vest at December 31, 2011	4.27
Weighted Average Remaining Contractual Term, Exercisable at December 31, 2011	2.90
Aggregate Intrinsic Value, Outstanding at December 31, 2011	$ 40
Aggregate Intrinsic Value, Vested and expected to vest at December 31, 2011	40
Aggregate Intrinsic Value, Exercisable at December 31, 2011	$ 39

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The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated during the reporting period due to noncompliance with plan terms during the reporting period.

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Net number of share options (or share units) granted during the period.

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The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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