| **Income Taxes**                     | 3 Months Ended                                                                                                                                                                                                                                                                                        |
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| **Income Tax Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                  |
| Income Taxes                         | Income Taxes The Provision for income taxes reflects an estimated annual tax rate of 30 percent in the first quarter of 2016 compared with 28 percent in the first quarter of 2015.  The increase in the estimated annual tax rate is primarily due to changes in the geographic mix of profits. |

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| - References
No definition available.
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| - Definition
The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.
+ References
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