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Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017 | Mar. 31, 2019 | Dec. 31, 2014 | Nov. 30, 2014 | Oct. 31, 2014
Derivative |  |  |  |  |  |  |
Reclassification adjustments for net gains or losses included in net income | $ 4,018,000 |  |  |  |  |  |
Unamortized portion of the fair value of derivative contracts | 4,000,000 |  |  |  |  |  |
Change in net unrealized gains or losses | $ (9,119,000) |  |  |  |  |  |
Senior notes |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Face amount |  |  |  | $ 1,200,000,000.00 |  | $ 2,500,000,000.00 |
Senior notes due November 1, 2024 | Senior notes |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Face amount |  |  |  |  |  |  | $ 1,250,000,000
Stated interest rate | 4.65% |  |  |  |  |  | 4.65%
Treasury Lock | Interest expense |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Reclassification adjustments for net gains or losses included in net income | $ 800,000 |  |  |  |  |  |
2018 Rate Lock Agreements |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Reclassification adjustments for net gains or losses included in net income | 300,000 |  |  |  |  |  |
Unamortized portion of the fair value of derivative contracts | 13,200,000 |  |  |  |  |  |
Senior notes | 2018 Rate Lock Agreements |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Change in net unrealized gains or losses | 13,600,000 |  |  |  |  |  |
Derivatives designated as hedging instruments | Senior notes | Cash flow hedge contracts- foreign currency | Treasury Lock | Portion of Senior notes |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  |  |  | $ 1,000,000,000.00
Unrealized gains (losses) on cash flow hedges |  |  |  |  | $ 7,500,000 |  |
Derivatives designated as hedging instruments | Senior notes | Cash flow hedge contracts- foreign currency | Treasury Lock | Portion of Senior notes | Interest expense |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Reclassification adjustments for net gains or losses included in net income |  | $ 800,000 | $ 800,000 |  |  |  |
Derivatives designated as hedging instruments | Senior notes | Cash flow hedge contracts- foreign currency | Treasury Lock | 2018 Rate Lock Agreements |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Derivative, notional amount | $ 500,000,000.00 | $ 500,000,000 |  |  |  |  |

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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 + Details
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- Definition Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e681-108580 + Details
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