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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2012
Stock-Based Compensation [Abstract] |
Pre-tax compensation expense and related income tax benefit for stock-based incentives |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Long-term stock awards |  | $ | 11 |  |  | $ | 9 |  |  | $ | 19 |  |  | $ | 19 |
Stock options |  |  | 4 |  |  |  | 6 |  |  |  | 9 |  |  |  | 11 |
Phantom stock awards and stock appreciation rights |  |  | 1 |  |  |  | (1 | ) |  |  | 6 |  |  |  | 2 |
Total |  | $ | 16 |  |  | $ | 14 |  |  | $ | 34 |  |  | $ | 32 |
Income tax benefit (before valuation allowance) |  | $ | 6 |  |  | $ | 5 |  |  | $ | 13 |  |  | $ | 12 |
Company's long-term stock award activity |
|  | Six Months Ended June 30, |
|  | 2012 |  |  | 2011 |
Unvested stock award shares at January 1 |  |  | 10 |  |  |  | 10 |
Weighted average grant date fair value |  | $ | 17 |  |  | $ | 19 |
Stock award shares granted |  |  | 1 |  |  |  | 2 |
Weighted average grant date fair value |  | $ | 12 |  |  | $ | 13 |
Stock award shares vested |  |  | 2 |  |  |  | 1 |
Weighted average grant date fair value |  | $ | 17 |  |  | $ | 19 |
Stock award shares forfeited |  |  | — |  |  |  | — |
Weighted average grant date fair value |  | $ | 18 |  |  | $ | 18 |
Unvested stock award shares at June 30 |  |  | 9 |  |  |  | 11 |
Weighted average grant date fair value |  | $ | 16 |  |  | $ | 17 |
Company's stock option activity |
|  | Six Months Ended |
|  | June 30, |
|  | 2012 |  |  | 2011 |
Option shares outstanding, January 1 |  |  | 36 |  |  |  | 37 |
Weighted average exercise price |  | $ | 21 |  |  | $ | 21 |
Option shares granted, including restoration options |  |  | 1 |  |  |  | 2 |
Weighted average exercise price |  | $ | 12 |  |  | $ | 13 |
Option shares exercised |  |  | — |  |  |  | — |
Aggregate intrinsic value on date of exercise (A) |  | $ | 1 million |  |  | $ | 1 million |
Weighted average exercise price |  | $ | 9 |  |  | $ | 8 |
Option shares forfeited |  |  | 3 |  |  |  | 2 |
Weighted average exercise price |  | $ | 19 |  |  | $ | 22 |
Option shares outstanding, June 30 |  |  | 34 |  |  |  | 37 |
Weighted average exercise price |  | $ | 21 |  |  | $ | 21 |
Weighted average remaining option term (in years) |  |  | 5 |  |  |  | 6 |
Option shares vested and expected to vest, June 30 |  |  | 34 |  |  |  | 37 |
Weighted average exercise price |  | $ | 21 |  |  | $ | 21 |
Aggregate intrinsic value (A) |  | $ | 29 million |  |  | $ | 20 million |
Weighted average remaining option term (in years) |  |  | 5 |  |  |  | 6 |
Option shares exercisable (vested), June 30 |  |  | 26 |  |  |  | 24 |
Weighted average exercise price |  | $ | 24 |  |  | $ | 24 |
Aggregate intrinsic value (A) |  | $ | 15 million |  |  | $ | 8 million |
Weighted average remaining option term (in years) |  |  | 4 |  |  |  | 5 |
(A) | Aggregate intrinsic value is calculated using the Company’s stock price at each respective date, less the exercise price (grant date price) multiplied by the number of shares.
Weighted average grant date fair value of option shares granted and the assumptions used to estimate those values using a Black-Scholes option pricing model |
|  | Six Months Ended |
|  | June 30, |
|  | 2012 |  |  | 2011 |
Weighted average grant date fair value |  | $ | 4.44 |  |  | $ | 5.10 |
Risk-free interest rate |  |  | 1.10 | % |  |  | 2.72 | %
Dividend yield |  |  | 2.57 | % |  |  | 2.34 | %
Volatility factor |  |  | 51.00 | % |  |  | 49.00 | %
Expected option life |  |  | 6 years |  |  |  | 6 years |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: 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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