Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Jun. 30, 2011
Consolidated Balance Sheets [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	489,300,000	490,800,000
Treasury stock, shares	149,400,000	147,900,000