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Derivatives Narrative (Details) $ in Millions	Mar. 31, 2018 USD ($)
Foreign Currency Forward & Foreign Currency Option Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 192.1
Debt [Member] | Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivate, Amount of Hedged Item, Through May 2018	750.0
Derivative, Amount of Hedged Item, Through May 2019	600.0
Derivative, Amount of Hedged Item, Through May 2020	450.0
Derivative, Amount of Hedged Item, Through May 2021	$ 200.0

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- Definition

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+ References

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- Definition

Derivative, Amount of Hedged Item, Through May 2019

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- Definition

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- Definition

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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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.

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