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Debt - Summary (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
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Debt |  |
Total | $ 1,945.0 | $ 1,942.1
Less: unamortized discount and debt issuance costs | (15.8) | (13.4)
Less: amounts due within one year and short-term borrowings | (82.5) | (500.8)
Total long-term debt | 1,846.7 | 1,427.9
Unsecured revolving credit facility due September 30, 2021 |  |
Debt |  |
Total | 540.0 | 332.0
Unsecured term loan due from January 3, 2017 to September 30, 2021 |  |
Debt |  |
Total | 600.0 | 398.8
Senior unsecured notes due November 15, 2016 |  |
Debt |  |
Total |  | 350.0
Senior unsecured notes due April 15, 2023 |  |
Debt |  |
Total | 500.0 | 500.0
Senior unsecured notes due November 15, 2036 |  |
Debt |  |
Total | 250.0 | 250.0
Other notes and revolving credit facilities |  |
Debt |  |
Total | $ 55.0 | $ 111.3

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- Definition Amount of unamortized debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
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