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Debt - Summary (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Debt
Total	$ 1,662.9	$ 1,663.7
Less: unamortized discount and debt issuance costs	(18.0)	(18.8)
Less: amounts due within one year and short-term borrowings	(5.2)	(6.0)
Total long-term debt	1,639.7	1,638.9
Unsecured revolving credit facility maturing September 3, 2025
Debt
Total	0.0
Senior unsecured notes due April 15, 2023
Debt
Total	500.0	500.0
Senior unsecured notes due August 15, 2025
Debt
Total	400.0	400.0
Senior unsecured notes due August 15, 2030
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	$ 12.9	$ 13.7

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The current portion of long term debt and total short term debt.

+ References

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(2)
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-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
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- Definition

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
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