Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012	Sep. 30, 2011
Current assets:
Allowances for returns and doubtful accounts	$ 349,660	$ 351,382
Stockholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	600,000,000	600,000,000
Common stock, shares issued	261,574,776	496,522,288
Common stock, shares outstanding	251,196,264	260,991,439
Treasury stock, shares held	10,378,512	235,530,849