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Short-Term Financing (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Jun. 30, 2015
Short-term Debt [Line Items] |  |  |
Long-term Line of Credit | $ 0.0 |  |
Commercial Paper | $ 0.0 |  | $ 0.0
Maturities of commercial paper range | overnight to up to 364 days |  |
Commercial Paper Weight Average Maturity | 2 days |  |
Maturities of short-term funding agreements | overnight to up to five business days |  |
Obligations under reverse repurchase agreements | $ 0.0 |  | $ 0.0
364-Day Credit Agreement [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities | $ 2,750.0 |  |
Term of credit | 364 days |  |
Expiration date of credit facilities | Jun. 16, 2016 |  |
Credit Facility Expiring In June Two Thousand Nineteen [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities | $ 3,250.0 |  |
Term of credit | 5 years |  |
Expiration date of credit facilities | Jun. 18, 2019 |  |
Line of credit facility potentially available increase in maximum borrowing capacity | $ 500.0 |  |
Credit Facility Expiring In June Two Thousand Twenty [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities | $ 2,250.0 |  |
Term of credit | 5 years |  |
Expiration date of credit facilities | Jun. 17, 2020 |  |
Line of credit facility potentially available increase in maximum borrowing capacity | $ 500.0 |  |
Commercial Paper [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Debt Instrument, Unused Borrowing Capacity, Description | 8250 |  |
Short-term Debt, Average Outstanding Amount | $ 3,500.0 | $ 3,100.0 |
Debt Instrument, Interest Rate During Period | 0.20% | 0.10% |
Reverse Repurchase Agreements [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities | $ 3,250.0 |  |
Short-term Debt, Average Outstanding Amount | $ 485.6 | $ 570.7 |
Debt Instrument, Interest Rate During Period | 0.40% | 0.40% |

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- Definition Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(2)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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