Debt - Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Long-term Debt	$ 2,213.4	$ 2,112.8
Capital Lease Obligations	18.0	17.9
Other	2.8	3.0
Total Long-Term Debt	2,231.4	2,130.7
Less: Current Portion	32.5	26.3
Long-term Debt, Gross and Capital Lease Obligations	2,198.9	2,104.4
Less: Unamortized Deferred Debt Issuance Costs	15.1	15.9
Total	2,183.8	2,088.5
Senior Notes \| Senior Notes with interest payable semi-annually at 4.125%, effective rate of 4.19%, payable in 2024
Debt Instrument [Line Items]
Long-term Debt	$ 300.0	$ 300.0
Stated interest rate	4.125%	4.125%
Effective interest rate	4.19%	4.20%
Senior Notes \| Senior Notes with interest payable semi-annually at 4.875%, effective rate of 4.94%, payable in 2022
Debt Instrument [Line Items]
Long-term Debt	$ 250.0	$ 250.0
Stated interest rate	4.875%	4.875%
Effective interest rate	4.94%	4.94%
Senior Notes \| Senior Notes with interest payable semi-annually at 4.75%, effective rate of 4.79%, payable in 2021
Debt Instrument [Line Items]
Long-term Debt	$ 425.0	$ 425.0
Stated interest rate	4.75%	4.75%
Effective interest rate	4.79%	4.79%
Term Loan
Debt Instrument [Line Items]
Long-term Debt	$ 943.8	$ 950.0
Effective interest rate	2.30%
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt	$ 291.8	$ 184.8
Interest rate at period end	2.30%

Long-term Debt, Gross and Capital Lease Obligations

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- Definition

Long-term Debt, Gross and Capital Lease Obligations, Including Current Maturities

+ References

No definition available.

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

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.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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-Publisher FASB
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The effective interest rate at the end of the reporting period.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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- Definition

Amount of long-term debt classified as other.

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