Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Jun. 30, 2011
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	158,741,461	158,741,461
Common stock, shares outstanding	129,694,049	131,066,864
Treasury shares, at cost	29,047,412	27,674,597