v2.4.0.8

Share-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
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 | 800,425 |  |  | 800,425 |  |
Common stock shares reserved for future issuance | 2,600,000 |  |  | 2,600,000 |  |
ESPP discount from market price | 15.00% |  | 15.00% | 15.00% |  | 15.00%
Net cash proceeds from the exercise of stock options | $ 2 |  | $ 1 | $ 18 |  | $ 3
Stock options exercised in period | 171,458 |  | 159,282 | 1,730,647 | [1] | 318,406
Stock options, exercisable | 3,765,289 | [1] | 5,700,000 | 3,765,289 | [1] | 5,700,000
Weighted-average exercise price | $ 25.06 |  | $ 15.47 | $ 25.06 |  | $ 15.47
Total pre-tax intrinsic value of stock options exercised | 3 |  | 2 | 36 |  | 5
Stock options, granted | 0 |  |  | 0 |  |
Closing stock price | $ 32.11 |  |  | $ 32.11 |  |
Total number of in-the-money stock options exercisable | 2,500,000 |  |  | 2,500,000 |  |
Restricted stock and PSU's [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Total unrecognized compensation cost | 93 |  |  | 93 |  |
Weighted-average period unrecognized compensation cost is expected to be recognized, in years |  |  |  | 1 year 9 months 18 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 |  |  | 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 | 269,238 |  |  | 269,238 |  |
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 | 531,187 |  |  | 531,187 |  |
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 |  |
Non-qualified stock options [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Total unrecognized compensation cost | $ 2 |  |  | $ 2 |  |
Weighted-average period unrecognized compensation cost is expected to be recognized, in years |  |  |  | 1 year |  |
[1] | No stock option awards were granted during the three and nine months ended September 30, 2013.

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Discount rate from fair value on purchase date that participants pay for shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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