Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	300,000	300,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	638,700,000	638,700,000
Common stock, shares outstanding	482,600,000	484,200,000
Treasury stock, shares	156,100,000	154,500,000
Securities for Reverse Repurchase Agreements	$ 245.2
Cash Collateral for Borrowed Securities	$ 0.7