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Stock Based Compensation Stock Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2012
Stock-Based Compensation [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  |  | Weighted-
| Number of |  | Average Exercise
| Shares |  | Price Per Share
| (in millions, except per share data)
Outstanding at January 1, 2010 | 5.6 |  |  | $ | 23.96 |
Options granted | — |  |  | — |
Options exercised | (0.2 | ) |  | 6.94 |
Options canceled | (0.4 | ) |  | 17.37 |
Outstanding at December 31, 2010 | 5.0 |  |  | $ | 25.01 |
Options granted | — |  |  | — |
Options exercised | (0.5 | ) |  | 8.69 |
Options canceled | (0.6 | ) |  | 26.96 |
Outstanding at December 31, 2011 | 3.9 |  |  | $ | 26.95 |
Options granted | 0.2 |  |  | 9.19 |
Options exercised | (0.1 | ) |  | 2.81 |
Options canceled | (1.0 | ) |  | 25.12 |
Outstanding at December 31, 2012 | 3.0 |  |  | $ | 27.08 |
Exercisable at December 31, 2010 | 4.8 |  |  | $ | 25.75 |
Exercisable at December 31, 2011 | 3.8 |  |  | $ | 27.25 |
Exercisable at December 31, 2012 | 2.8 |  |  | $ | 28.02 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
|  |  |  | Weighted- |  |  |  |  |  | Weighted-
Range of |  | Stock Options |  | Average Exercise |  | Weighted-Average |  | Stock Options |  | Average Exercise
Exercise Prices |  | Outstanding |  | Price Per Share |  | Contractual Life |  | Exercisable |  | Price Per Share
|  | (in millions, except per share data) |  |  | (in years) |  | (in millions, except per share data)
$9.19 - $15.58 |  | 0.5 |  |  | $ | 12.82 |  |  | 5.3 |  | 0.3 |  |  | $ | 14.15 |
$19.54 - $23.73 |  | 0.9 |  |  | 23.63 |  |  | 0.1 |  | 0.9 |  |  | 23.63 |
$24.70 - $26.65 |  | 0.6 |  |  | 26.23 |  |  | 3.2 |  | 0.6 |  |  | 26.23 |
$33.71 - $40.83 |  | 1.0 |  |  | 38.54 |  |  | 1.1 |  | 1.0 |  |  | 38.54 |
|  | 3.0 |  |  | $ | 27.08 |  |  | 2.0 |  | 2.8 |  |  | $ | 28.02 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
| 2012
Expected volatility | 47.00 | %
Risk-free interest rate | 1.17 | %
Dividend yield | — | %
Expected life of options | 6 years |
Weighted-average grant-date fair value | $ | 4.18 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|  |  | Weighted Average
| Number of |  | Grant Date Fair
| Shares/Units |  | Value per Share/Unit
| (in millions, except per share data)
Outstanding at January 1, 2010 | 3.3 |  |  | $ | 14.77 |
Granted | — |  |  | — |
Vested | (0.4 | ) |  | 23.42 |
Canceled | (0.1 | ) |  | 14.54 |
Outstanding at December 31, 2010 | 2.8 |  |  | $ | 13.48 |
Granted | — |  |  | — |
Vested | (1.1 | ) |  | 17.41 |
Canceled | (0.1 | ) |  | 10.68 |
Outstanding at December 31, 2011 | 1.6 |  |  | $ | 10.74 |
Granted | 1.0 |  |  | 10.31 |
Vested | (1.4 | ) |  | 10.19 |
Canceled | (0.1 | ) |  | 26.02 |
Outstanding at December 31, 2012 | 1.1 |  |  | $ | 11.08 |

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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 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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: 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 3: 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. + 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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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