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Short-Term Financing (Details) (USD $) | 3 Months Ended |  | 3 Months Ended
--- | --- | --- | ---
Sep. 30, 2014 | Jun. 30, 2014 | Sep. 30, 2014 364-Day Credit Agreement [Member] | Sep. 30, 2014 Credit Facility Expiring In June 2015 [Member] | Sep. 30, 2014 Credit Facility Expiring In June 2018 [Member] | Sep. 30, 2014 Short-Term Commercial Paper Program [Member] | Sep. 30, 2013 Short-Term Commercial Paper Program [Member] | Sep. 30, 2014 Reverse Repurchase Agreements [Member] | Sep. 30, 2013 Reverse Repurchase Agreements [Member]
Short-term Debt [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity under credit facilities |  |  | $ 2,250,000,000 | $ 3,250,000,000 | $ 2,000,000,000 |  |  | $ 3,250,000,000 |
Credit agreement period | 364 days |  |  |  |  |  |  |  |
Term of credit |  |  |  | 5 years | 5 years |  |  |  |
Expiration date of credit facilities |  |  | Jun. 01, 2015 | Jun. 01, 2019 | Jun. 01, 2018 |  |  |  |
Line of credit facility potentially available increase in maximum borrowing capacity |  |  |  | 500,000,000 |  |  |  |  |
Short-term Debt |  |  | 0 |  |  |  |  |  |
Aggregate amount of commercial paper issuable under the short-term commercial paper program | 7,500,000,000 |  |  |  |  |  |  |  |
Maturities of commercial paper range | overnight to up to 364 days |  |  |  |  |  |  |  |
Obligation under commercial paper borrowing | 1,937,000,000 | 2,173,000,000 |  |  |  |  |  |  |
Short-term Debt, Average Outstanding Amount |  |  |  |  |  | 3,100,000,000 | 3,100,000,000 | 570,700,000 | 529,400,000
Weighted average interest rates |  |  |  |  |  | 0.10% | 0.10% | 0.40% | 0.50%
Commercial Paper Weight Average Maturity |  |  |  |  |  | 2 days | 2 days |  |
Maturities of short-term funding agreements | overnight to up to five business days |  |  |  |  |  |  |  |
Obligations under reverse repurchase agreements |  | $ 0 |  |  |  |  |  |  |

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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 SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: 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 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a(3) -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph 2 -Article 9 + Details
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