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Incentive Compensation Plans Stock-based Compensation, Grants in Period Weighted Average (Tables) | 12 Months Ended
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Dec. 31, 2015
Summary of Stock Options Assumptions [Abstract] |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] | Stock-based compensation awards expected to be settled in cash have been classified as liabilities in our Consolidated Balance Sheets as of December 31, 2015 and 2014.
|  | Years ended December 31,
|  | 2015 |  | 2014 |  | 2013
Stock-Settled Awards: |  |  |  |  |  |
Awards granted |  | 0.8 |  |  | 1.2 |  |  | 1.1 |
Weighted-average grant-date fair value (per award) |  | $ | 22.07 |  |  | $ | 17.77 |  |  | $ | 13.51 |
Total fair value of vested awards distributed |  | $ | 18.8 |  |  | $ | 12.6 |  |  | $ | 35.4 |
Cash-Settled Awards: |  |  |  |  |  |
Awards granted |  | 0.1 |  |  | 0.1 |  |  | 0.1 |
Weighted-average grant-date fair value (per award) |  | $ | 20.46 |  |  | $ | 18.20 |  |  | $ | 16.35 |
Total fair value of vested awards distributed |  | $ | 0.2 |  |  | $ | 0.6 |  |  | $ | 5.4 |
Performance-Based Awards: |  |  |  |  |  |
Awards granted |  | 2.9 |  |  | 3.5 |  |  | 1.5 |
Weighted-average grant-date fair value (per award) |  | $ | 20.88 |  |  | $ | 16.56 |  |  | $ | 11.97 |
Total fair value of vested awards distributed |  | $ | 18.7 |  |  | $ | 15.3 |  |  | $ | 0.2 |

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- Definition Summary of Stock Options Assumptions [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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