v2.4.0.8

Share-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants received by certain executive officers and a select group of non officer employees	723,576
Additional PSU's Granted	64,330
Common stock shares reserved for future issuance	1,300,000
ESPP discount from market price	15.00%		15.00%
Net cash proceeds from the exercise of stock options	$ 7		$ 6
Stock options exercised in period	367,115	[1]	377,425
Stock options, exercisable	4,472,845	[1]	4,900,000
Weighted-average exercise price	$ 25.72		$ 20.93
Total fair value of stock option vested	11
Total pre-tax intrinsic value of stock options exercised	7		6
Stock options, granted	0
Closing stock price	$ 36.94
Total number of in-the-money stock options exercisable	4,300,000
Restricted stock and PSU's [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	$ 119
Weighted-average period unrecognized compensation cost is expected to be recognized, in years	1 year 10 months 24 days
PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target amount granted, minimum	0.00%
Percentage of target amount granted, maximum	150.00%
Performance period (year)	3 years
Number of peer groups	2
Performance-based long-term incentive program weighted percentage	50.00%
Minimum payout	0.00%
Maximum payout	200.00%
PSUs [Member] | Chief executive officer's and executive vice presidents' [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Chief executive officer's and executive vice presidents' long-term stock-based compensation	100.00%
PSUs [Member] | Senior vice presidents' [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Chief executive officer's and executive vice presidents' long-term stock-based compensation	50.00%
PSUs [Member] | One-year performance period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants received by certain executive officers and a select group of non officer employees	256,485
PSUs [Member] | Three-year performance period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants received by certain executive officers and a select group of non officer employees	467,091
Restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General expiration period of stock options	10 years
Grant vesting period, expectation exceeds, years	third
Grant vesting period, expectation met, years	fourth
Grant vesting period, expectation not met, years	fifth
Restricted stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting range	3 years
Restricted stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting range	5 years
[1] No stock option awards were granted during the three months ended March 31, 2014.

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Incentive Compensation Percentage

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Stock options, general expiration period.

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Aggregate number of common shares reserved for future issuance.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Period 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, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Discount rate from fair value on purchase date that participants pay for shares.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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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 vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Price of a single share of a number of saleable stocks of a company.

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Number of share options (or share units) exercised during the current period.

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