v2.4.0.8

Share-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2013
Share-Based Compensation [Abstract] |
Schedule of Weighted-Average Assumptions Used to Determine the Weighted-Average Fair Values |
|  | Nine Months Ended September 30,
|  | 2013 |  | 2012
Weighted-average risk free interest rate |  |  | 0.45% |  |  | 0.34%
Expected volatility(1) |  |  | 31.4% |  |  | 32.9%
Weighted-average fair value at grant date |  | $ | 43.81 |  | $ | 22.50
Summary of Share-Based Compensation Expense |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2013 |  | 2012 |  | 2013 |  | 2012
|  | (in millions)
Share-based compensation expense before income taxes |  | $ | 14 |  | $ | 12 |  | $ | 32 |  | $ | 34
Income tax benefit |  |  | (6) |  |  | (5) |  |  | (13) |  |  | (14)
Share-based compensation expense after income taxes |  | $ | 8 |  | $ | 7 |  | $ | 19 |  | $ | 20
Summary of Stock Option Activity |
|  | Number of Stock Options(1) |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term |  | Aggregate Intrinsic Value
|  |  |  |  |  |  |  | (in years) |  | (in millions)
Outstanding at January 1, 2013 |  |  | 7,545,777 |  | $ | 21.10 |  |  | 5.0 |  | $ | 45
Exercised |  |  | 1,730,647 |  |  | 10.25 |  |  |  |  |  |
Forfeited or expired |  |  | 161,492 |  |  | 25.15 |  |  |  |  |  |
Outstanding at September 30, 2013 |  |  | 5,653,638 |  | $ | 24.29 |  |  | 4.9 |  | $ | 50
Exercisable at September 30, 2013 |  |  | 3,765,289 |  | $ | 25.06 |  |  | 4.0 |  | $ | 32
(1) No stock option awards were gra nted during the three and nine months ended September 30, 2013.
Summary of Restricted Stock And PSU Activity |
|  | Restricted Stock |  | PSUs
|  | Number of Awards |  | Weighted-Average Grant Date Fair Value |  | Number of Awards |  | Weighted-Average Grant Date Fair Value
Unvested balances at January 1, 2013 |  |  | 3,204,188 |  | $ | 23.20 |  |  | 1,879,799 |  | $ | 23.14
Granted |  |  | 1,179,692 | (1) |  | 32.69 |  |  | 828,453 | (2) |  | 39.68
Vested |  |  | (246,246) |  |  | 23.70 |  |  | (89,368) |  |  | 19.77
Forfeited |  |  | (232,753) |  |  | 24.00 |  |  | (115,788) |  |  | 22.59
Unvested balances at September 30, 2013 |  |  | 3,904,881 |  | $ | 25.96 |  |  | 2,503,096 |  | $ | 28.76

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- Definition Weighted Average Esteimated Fair Value Table + References No definition available. + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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