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Fair Value Measurements (Tables) | 12 Months Ended
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Jun. 30, 2019
Fair Value Disclosures [Abstract] |
Schedule of fair value of assets and liabilities measured on a recurring basis | The following tables present the Company’s assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy:
June 30, 2019 |  | Fair Value Measurements Using Input Type
($ in millions) |  | Level 2 |  | Total
Assets: |  |  |  |  |  |
Derivative financial instruments |  | $ | 12.5 |  |  | $ | 12.5 |
Liabilities: |  |  |  |  |  |
Derivative financial instruments |  | $ | 28.0 |  |  | $ | 28.0 |
June 30, 2018 |  | Fair Value Measurements Using Input Type
($ in millions) |  | Level 2 |  | Total
Assets: |  |  |  |  |  |
Marketable securities |  |  |  |  |  |
Municipal auction rate securities |  | $ | 2.9 |  |  | $ | 2.9 |
Derivative financial instruments |  | 35.2 |  |  | 35.2 |
Total assets |  | $ | 38.1 |  |  | $ | 38.1 |
Liabilities: |  |  |  |  |  |
Derivative financial instruments |  | $ | 3.4 |  |  | $ | 3.4 |
Schedule of carrying amounts and estimated fair values of financial instruments not recorded at fair value in the financial statements | The carrying amounts and estimated fair values of the Company’s financial instruments not recorded at fair value in the financial statements were as follows:
|  | June 30, 2019 |  | June 30, 2018
($ in millions) |  | Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Long-term debt |  | $ | 550.6 |  |  | $ | 560.6 |  |  | $ | 545.7 |  |  | $ | 558.3 |
Company-owned life insurance |  | $ | 17.9 |  |  | $ | 17.9 |  |  | $ | 16.4 |  |  | $ | 16.4 |

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=117815213&loc=SL7498348-110258 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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