v2.4.0.8

Stock-Based Compensation Performance Based Restricted Stock Units (Details) In Millions, unless otherwise specified | 9 Months Ended | 12 Months Ended
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Sep. 30, 2013 | Dec. 31, 2012
Performance Based Restricted Stock Units [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share Based Compensation Arrangement By Share Based Payment Award Performance Share Unit Award Number | 0.9 |
Share Based Payment Award, Vesting Period | 3 years |
Share Based Compensation Arrangement By Share Based Payment Award Performance Share Unit Additional Units Granted Minimum Percentage | 0.00% |
Share Based Compensation Arrangement By Share Based Payment Award Performance Share Unit Additional Units Granted Maximum Percentage | 200.00% |
Share Based Compensation Arrangement By Share Based Payment Award Performance Share Unit Threshold Award Level Nonvested Number | 1.8 |
Share Based Compensation Arrangement By Share Based Payment Award Performance Share Unit Award Level Nonvested At Period End Number | 2.5 |
Share Based Compensation Arrangement By Share Based Payment Award Performance Share Unit Outstanding At Threshold | 100.00% |
Stock Price Based RSU [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Stock Price Based Restricted Stock Unit Awards, Granted During Period, Number | 0.2 | 0.1
Stock Price Based Restricted Stock Unit Awards, Outstanding At Period End | 0.3 |
Stock Price Based Restricted Stock Unit Awards, Outstanding At Period End, Market Condition Met | 0.3 |
Stock Price Based Restricted Stock Unit Awards, Vested During Period, Number | 0.7 |
Minimum [Member] | Stock Price Based RSU [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share Based Payment Award, Vesting Period | 1 year |
Maximum [Member] | Stock Price Based RSU [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share Based Payment Award, Vesting Period | 7 years |

X
- Definition Maximum percentage applicable to performance based restricted stock units awarded based on the level of achievement of specified conditions at the vesting date. + References No definition available. + Details
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Period Type: | duration

X
- Definition Minimum percentage applicable to performance based restricted stock units awarded based on the level of achievement of specified conditions at the vesting date. + References No definition available. + Details
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X
- Definition The number of outstanding performance share units that could be awarded based on performance as of the end of the reporting period. + References No definition available. + Details
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- Definition Performance-based restricted stock units granted during the period. + References No definition available. + Details
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- Definition Percentage applicable to performance based restricted stock units awarded based on the threshold level of achievement of specified conditions at end of period. + References No definition available. + Details
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Period Type: | duration

X
- Definition The number of outstanding performance share units at the threshold award level as of the end of the reporting period. + References No definition available. + Details
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- Definition Stock Price Based Restricted Stock Unit Awards, Granted During Period, Number + References No definition available. + Details
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Data Type: | xbrli:sharesItemType
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- Definition Stock Price Based Restricted Stock Unit Awards, Outstanding At Period End + References No definition available. + Details
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- Definition Stock Price Based Restricted Stock Unit Awards, Outstanding At Period End, Market Condition Met + References No definition available. + Details
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- Definition Stock Price Based Restricted Stock Unit Awards, Vested During Period, Number + References No definition available. + Details
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Data Type: | xbrli:sharesItemType
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X
- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Details
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