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Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2014 | Nov. 30, 2014 | Oct. 31, 2014
Senior notes |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Face amount |  |  |  |  |  | $ 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% | [1] |  |  |  |  | 4.65%
Derivatives designated as hedging instruments | Cash flow hedge contracts- foreign currency | Portion of Senior notes | Senior notes | Treasury lock |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  |  |  | $ 1,000,000,000.00
Unrealized Gains (Losses) on Cash Flow Hedges |  |  |  |  | $ 7,500,000 |  |
Derivatives designated as hedging instruments | Cash flow hedge contracts- foreign currency | Portion of Senior notes | Senior notes | Treasury lock | Interest expense |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Unrealized Gains (Losses) on Cash Flow Hedges | $ 4,800,000 |  |  |  |  |  |
Gain reclassified from accumulated OCI into income, effective portion | 800,000 |  | $ 800,000 | $ 800,000 |  |  |
Derivatives designated as hedging instruments | Cash flow hedge contracts- foreign currency | 2018 Rate Lock Agreements | Senior notes | Treasury lock |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Derivative, notional amount | 500,000,000.00 |  |  |  |  |  |
Derivatives designated as hedging instruments | Cash flow hedge contracts- foreign currency | 2018 Rate Lock Agreements | Senior notes | Treasury lock | Interest expense |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |
Unrealized Gains (Losses) on Cash Flow Hedges | $ 4,900,000 |  |  |  |  |  |
[1] | The effective interest rate disclosed above for this series of Senior Notes excludes the impact of the treasury rate lock hedge discussed below. The effective interest rate including the impact of the treasury rate lock hedge was 4.626%.

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994 + Details
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