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Income Taxes Schedule of Unrecognized Tax Benefits Activity (Tables) | 12 Months Ended
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Dec. 31, 2015
Summary of Other Intangible Assets [Abstract] |
Schedule of Unrecognized Tax Benefits Activity [Table Text Block] | The table below summarizes the activity related to our unrecognized tax benefits.
| December 31,
| 2015 |  | 2014 |  | 2013
Balance at beginning of period | $ | 238.0 |  |  | $ | 219.2 |  |  | $ | 194.6 |
Increases as a result of tax positions taken during a prior year | 5.2 |  |  | 29.0 |  |  | 8.3 |
Decreases as a result of tax positions taken during a prior year | (19.7 | ) |  | (16.3 | ) |  | (1.9 | )
Settlements with taxing authorities | (4.1 | ) |  | (1.1 | ) |  | (34.9 | )
Lapse of statutes of limitation | (3.8 | ) |  | (4.1 | ) |  | (10.6 | )
Increases as a result of tax positions taken during the current year | 11.3 |  |  | 11.3 |  |  | 63.7 |
Balance at end of period | $ | 226.9 |  |  | $ | 238.0 |  |  | $ | 219.2 |

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- Definition Summary of Other Intangible Assets [Abstract] + References No definition available. + Details
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