Borrowings - Outstanding Borrowings (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Line Of Credit Facility Covenant Compliance [Line Items]
Principal amount outstanding at June 30, 2019	$ 1,475.7
Long-term debt	1,470.4	$ 1,053.4
Fair Value at June 30, 2019	1,490.9
Revolving Credit Facility \| Fiscal 2019 Revolving Credit Facility \| Long-term debt
Line Of Credit Facility Covenant Compliance [Line Items]
Principal amount outstanding at June 30, 2019	575.7
Unused Available Capacity	924.3
Fair Value at June 30, 2019	575.7
Revolving Credit Facility \| Fiscal 2019 Revolving Credit Facility, U.S. Dollar Tranche \| Long-term debt
Line Of Credit Facility Covenant Compliance [Line Items]
Long-term debt		160.0
Unused Available Capacity	740.0
Fair Value at June 30, 2019	360.0
Revolving Credit Facility \| Fiscal 2019 Revolving Credit Facility Multicurrency Tranche \| Long-term debt
Line Of Credit Facility Covenant Compliance [Line Items]
Long-term debt		0.0
Unused Available Capacity	184.3
Fair Value at June 30, 2019	215.7
Senior Notes \| Fiscal 2014 Senior Notes \| Long-term debt
Line Of Credit Facility Covenant Compliance [Line Items]
Principal amount outstanding at June 30, 2019	400.0
Long-term debt	399.2	398.5
Fair Value at June 30, 2019	405.4	405.8
Senior Notes \| Fiscal 2016 Senior Notes \| Long-term debt
Line Of Credit Facility Covenant Compliance [Line Items]
Principal amount outstanding at June 30, 2019	500.0
Long-term debt	495.5	494.8
Fair Value at June 30, 2019	$ 509.8	$ 474.4

Line Of Credit Facility Covenant Compliance [Line Items]

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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