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Employee Benefit Plans (Textuals) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage of medical coverage cost payable by participants | 100.00% |  |
U.S. Based Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Projected benefit obligation (as a percent) | 88.00% |  |
Plan assets (as a percent) | 88.00% |  |
Long-term rate of return on assets assumption (as a percent) | 7.50% |  |
Components of fair value in our plan assets | 88.00% |  |
Pension Benefits [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated prior service (cost) credits | $ (0.2) |  |
Estimated actuarial gains (losses) | $ (8.9) |  |
Long-term rate of return on assets assumption (as a percent) | 7.50% | 7.50% | 8.00%
Discount rate (as a percent) | 4.17% | 4.51% |
Other Benefits [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated prior service (cost) credits | $ 2.4 |  |
Estimated actuarial gains (losses) | $ (1.4) |  |
Long-term rate of return on assets assumption (as a percent) | 0.00% | 0.00% | 0.00%
Discount rate (as a percent) | 3.50% | 3.55% |
Canadian Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Components of fair value in our plan assets | 6.00% |  |
United Kingdom Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Components of fair value in our plan assets | 6.00% |  |
Fixed Income, Money Market, Cash and Guaranteed Investment Contracts [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target (as a percent) | 58.00% |  |
Equity Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target (as a percent) | 42.00% |  |
International Equity [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target (as a percent) | 17.00% |  |
U.S. Equity [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target (as a percent) | 25.00% |  |

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- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512046 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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