Short-Term Financing (Details) (USD $)	3 Months Ended			6 Months Ended			3 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014
Short-term Debt [Line Items]
Effective Income Tax Rate Reconciliation, Percent	33.30%		32.00%	33.70%		33.10%
Credit agreement period				364 days
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	0	[1]		0	[1]			2,173,000,000	[1]
Maturities of short-term funding agreements				overnight to up to five business days
364-Day Credit Agreement [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity under credit facilities	2,250,000,000			2,250,000,000
Expiration date of credit facilities				Jun. 01, 2015
Credit Facility Expiring In June 2015 [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity under credit facilities	3,250,000,000			3,250,000,000
Term of credit				5 years
Expiration date of credit facilities				Jun. 01, 2019
Line of credit facility potentially available increase in maximum borrowing capacity				500,000,000
Credit Facility [Domain]
Short-term Debt [Line Items]
Short-term Debt	0			0
Credit Facility Expiring In June 2018 [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity under credit facilities	2,000,000,000			2,000,000,000
Term of credit				5 years
Expiration date of credit facilities				Jun. 01, 2018
Short-Term Commercial Paper Program [Member]
Short-term Debt [Line Items]
Short-term Debt, Average Outstanding Amount	3,000,000,000		3,300,000,000	3,100,000,000		3,200,000,000
Weighted average interest rates			0.10%	0.10%		0.10%	0.10%
Commercial Paper Weight Average Maturity	2 days					2 days
Reverse Repurchase Agreements [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity under credit facilities	3,250,000,000			3,250,000,000
Short-term Debt								0
Short-term Debt, Average Outstanding Amount	$ 598,600,000		402,000,000	$ 584,700,000		465,700,000
Weighted average interest rates	0.50%		0.60%	0.50%		0.50%

[1] 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 9).