Balance Sheet Parenthetical (USD $)	Sep. 30, 2011	Sep. 30, 2010
Accounts receivable, net	$ 1,089,000,000	$ 982,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	5,345,008	5,286,084
Preferred stock, shares	$ 847,277	$ 794,076