Short-Term Financing (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				12 Months Ended						3 Months Ended	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014 364-Day Credit Agreement [Member]	Jun. 30, 2014 Commercial Paper [Member]	Jun. 30, 2014 Credit Facility Expiring In June 2015 [Member]	Jun. 30, 2014 Credit Facility Expiring In June 2018 [Member]	Jun. 30, 2014 Short-Term Commercial Paper Program [Member]	Jun. 30, 2013 Short-Term Commercial Paper Program [Member]	Sep. 30, 2013 Reverse Repurchase Agreements [Member]	Jun. 30, 2014 Reverse Repurchase Agreements [Member]	Jun. 30, 2013 Reverse Repurchase Agreements [Member]	Jun. 30, 2015 Subsequent Event [Member] Commercial Paper [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity under credit facilities					$ 2,250.0		$ 3,250.0	$ 2,000.0				$ 3,250.0
Obligations under reverse repurchase agreements	0		245.9	[1]
Credit agreement period	364 days
Term of credit							5 years	5 years
Expiration date of credit facilities					Jun. 17, 2015		Jun. 18, 2019	Jun. 01, 2018
Line of credit facility potentially available increase in maximum borrowing capacity							500.0	500.0
Outstanding borrowings					0					0			0
Debt Instrument, Description						7250								7500
Maturities of commercial paper range	overnight to up to 364 days
Commercial Paper	2,173.0	[2]	0
Debt Instrument, Maturity Date											Jul. 02, 2013
Average outstanding borrowings									$ 2,300.0	$ 2,400.0		$ 361.7	$ 362.0
Weighted average interest rates									0.10%	0.20%		0.50%	0.70%
Weighted average maturity of borrowings under the short-term commercial paper program									2 days	2 days
Maturities of short-term funding agreements	overnight to up to five business days

[1] As of June 30, 2013, $245.2 million of long-term marketable securities and $0.7 million of cash and cash equivalents have been pledged as collateral under the Company's reverse repurchase agreements (see Note 10).

[2] As of June 30, 2014, $2,015.8 million of short-term marketable securities and $183.8 million of cash and cash equivalents are related to the Company's outstanding commercial paper borrowings (see Note 10).