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Stock Option Plans and Share-Based Compensation Stock option rollforward YTD (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | 5 years 3 months 18 days |  |
Number of Shares [Roll Forward] |  |  |
Beginning balance | 4,470 | 4,693 | 4,740
Granted | 502 | 645 | 494
Exercised | (1,686) | (669) | (413)
Expired | (56) | (84) | (86)
Forfeited | (87) | (115) | (42)
Ending balance | 3,143 | 4,470 | 4,693
Weighted Average Exercise Price [Roll Forward] |  |  |
Beginning balance | $ 14.06 | $ 13.36 | $ 12.86
Granted | $ 20.25 | $ 14.85 | $ 14.57
Exercised | $ 12.53 | $ 8.65 | $ 8.30
Expired | $ 15.66 | $ 14.02 | $ 13.59
Forfeited | $ 14.68 | $ 21.44 | $ 20.76
Ending balance | $ 15.82 | $ 14.06 | $ 13.36
Additional Disclosures [Abstract] |  |  |
Vested and expected to vest | 3,114 |  |
Number Exercisable | 2,078 |  |
Vested and expected to vest | $ 15.79 |  |
Weighted Average Exercise Price of Exercisable Options | $ 15.11 |  |
Options outstanding, intrinsic value | $ 30,800,000 |  |
Vested and expected to vest, weighted average remaining contratual term | 5 years 7 months | 5 years 7 months 20 days |
Options vested and expected to vest, aggregate intrinsic value | 30,600,000 |  |
Options exercisable, weighted average remaining contractual term | 4 years 1 month |  |
Options exercisable, intrinsic value | 22,000,000 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 3,143 | 4,470 | 4,693
Weighted Average Exercise Price of Outstanding Options | $ 15.82 | $ 14.06 | $ 13.36
Number Exercisable | 2,078 |  |
Weighted Average Exercise Price of Exercisable Options | $ 15.11 |  |
Exercise price range, lower range limit | $ 2.70 |  |
Exercise price range, upper range limit | $ 29.16 |  |
Grants in period, weighted average grant date fair value | $ 8.09 | $ 6.13 | $ 6.47
Exercises in period, total intrinsic value | 14,000,000 | 2,800,000 | 2,900,000
$2.70 - $9.25 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 332 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 8.71 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 332 |  |
Weighted Average Exercise Price of Exercisable Options | $ 8.71 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 332 |  |
Weighted Average Exercise Price of Outstanding Options | $ 8.71 |  |
Number Exercisable | 332 |  |
Weighted Average Exercise Price of Exercisable Options | $ 8.71 |  |
Exercise price range, lower range limit | $ 2.70 |  |
Exercise price range, upper range limit | $ 9.25 |  |
$9.34 - $10.58 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 384 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 10.65 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 384 |  |
Weighted Average Exercise Price of Exercisable Options | $ 10.65 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 384 |  |
Weighted Average Exercise Price of Outstanding Options | $ 10.65 |  |
Number Exercisable | 384 |  |
Weighted Average Exercise Price of Exercisable Options | $ 10.65 |  |
Exercise price range, lower range limit | $ 9.34 |  |
Exercise price range, upper range limit | $ 10.58 |  |
$10.60 - $11.58 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 347 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 12.84 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 291 |  |
Weighted Average Exercise Price of Exercisable Options | $ 12.77 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 347 |  |
Weighted Average Exercise Price of Outstanding Options | $ 12.84 |  |
Number Exercisable | 291 |  |
Weighted Average Exercise Price of Exercisable Options | $ 12.77 |  |
Exercise price range, lower range limit | $ 10.60 |  |
Exercise price range, upper range limit | $ 11.58 |  |
$11.66 - $13.16 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 358 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 13.86 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 143 |  |
Weighted Average Exercise Price of Exercisable Options | $ 13.94 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 358 |  |
Weighted Average Exercise Price of Outstanding Options | $ 13.86 |  |
Number Exercisable | 143 |  |
Weighted Average Exercise Price of Exercisable Options | $ 13.94 |  |
Exercise price range, lower range limit | $ 11.66 |  |
Exercise price range, upper range limit | $ 13.16 |  |
$13.33 - $13.74 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 364 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 14.58 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 167 |  |
Weighted Average Exercise Price of Exercisable Options | $ 14.67 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 364 |  |
Weighted Average Exercise Price of Outstanding Options | $ 14.58 |  |
Number Exercisable | 167 |  |
Weighted Average Exercise Price of Exercisable Options | $ 14.67 |  |
Exercise price range, lower range limit | $ 13.33 |  |
Exercise price range, upper range limit | $ 13.74 |  |
$13.88 - $14.38 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 382 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 16.79 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 106 |  |
Weighted Average Exercise Price of Exercisable Options | $ 16.51 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 382 |  |
Weighted Average Exercise Price of Outstanding Options | $ 16.79 |  |
Number Exercisable | 106 |  |
Weighted Average Exercise Price of Exercisable Options | $ 16.51 |  |
Exercise price range, lower range limit | $ 13.88 |  |
Exercise price range, upper range limit | $ 14.38 |  |
$14.42 - $16.70 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 434 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 19.84 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 369 |  |
Weighted Average Exercise Price of Exercisable Options | $ 20.12 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 434 |  |
Weighted Average Exercise Price of Outstanding Options | $ 19.84 |  |
Number Exercisable | 369 |  |
Weighted Average Exercise Price of Exercisable Options | $ 20.12 |  |
Exercise price range, lower range limit | $ 14.42 |  |
Exercise price range, upper range limit | $ 16.70 |  |
$16.73 - $20.95 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 330 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 22.52 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 104 |  |
Weighted Average Exercise Price of Exercisable Options | $ 21.50 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 330 |  |
Weighted Average Exercise Price of Outstanding Options | $ 22.52 |  |
Number Exercisable | 104 |  |
Weighted Average Exercise Price of Exercisable Options | $ 21.50 |  |
Exercise price range, lower range limit | $ 16.73 |  |
Exercise price range, upper range limit | $ 20.95 |  |
$21.07 - $26.99 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 136 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 24.61 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 106 |  |
Weighted Average Exercise Price of Exercisable Options | $ 24.76 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 136 |  |
Weighted Average Exercise Price of Outstanding Options | $ 24.61 |  |
Number Exercisable | 106 |  |
Weighted Average Exercise Price of Exercisable Options | $ 24.76 |  |
Exercise price range, lower range limit | $ 21.07 |  |
Exercise price range, upper range limit | $ 26.99 |  |
$29.16 - $29.16 [Member] |  |  |
Number of Shares [Roll Forward] |  |  |
Ending balance | 76 |  |
Weighted Average Exercise Price [Roll Forward] |  |  |
Ending balance | $ 29.16 |  |
Additional Disclosures [Abstract] |  |  |
Number Exercisable | 76 |  |
Weighted Average Exercise Price of Exercisable Options | $ 29.16 |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 76 |  |
Weighted Average Exercise Price of Outstanding Options | $ 29.16 |  |
Number Exercisable | 76 |  |
Weighted Average Exercise Price of Exercisable Options | $ 29.16 |  |
Exercise price range, lower range limit | $ 29.16 |  |
Exercise price range, upper range limit | $ 29.16 |  |
Stock Options [Member] |  |  |
Share-based Compensation, Exercise Price Range [Abstract] |  |  |
Total compensation cost not yet recognized | $ 7,100,000.00 |  |

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