Long-Term Debt - Long-term Debt Components (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total long-term debt	$ 1,204.4	$ 1,554.8
Less: current portion of long-term debt	(80.0)	(79.1)
Long-term debt before debt issuance costs and discount	1,124.4	1,475.7
Less: debt issuance costs and discount	(8.6)	(10.6)
Long-term debt, net of current portion	1,115.8	1,465.1
Other Debt [Member]
Debt Instrument [Line Items]
Total long-term debt	24.7	41.7
Medium-term Notes [Member] \| Term Loan A [Member]
Debt Instrument [Line Items]
Total long-term debt	1,179.7	1,203.1
Line of Credit [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 0.0	$ 310.0

Long-term Debt, Gross, Current Maturities

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- Definition

Long-term Debt, Gross, Excluding Current Maturities

+ References

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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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.

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