Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Stockholders' Equity Note [Abstract]

The number of shares of each class and the number of shares of class A common stock on an as-converted basis at September 30, 2013, are as follows:



(in millions except conversion rate)	Shares Outstanding	Conversion Rate Into Class A Common Stock	As-converted Class A Common Stock (1)
Class A common stock	508	—	508
Class B common stock	245	0.4206	103
Class C common stock	27	1.0000	27
Total			638


⁽¹⁾	Figures in the table may not recalculate exactly due to rounding. As-converted class A common stock is calculated based on whole numbers, not the rounded numbers presented.

Schedule of Treasury Stock by Class

The following table presents share repurchases in the open market during the following fiscal years:



(in millions, except per share data)	2013		2012
Shares repurchased in the open market ⁽¹⁾	33		6
Weighted-average repurchase price per share	$	161.94	$	114.87
Total cost	$	5,365	$	710


⁽¹⁾	All shares repurchased in the open market have been retired and constitute authorized but unissued shares.

Share Repurchase Program Disclosure

The following table presents as-converted class B common stock after deposits into the litigation escrow account in fiscal 2012. There were no deposits into the litigation escrow account in fiscal 2013.



	Fiscal 2012
(in millions, except per share and conversion rate data)	July 2012		December 2011
Deposits under the retrospective responsibility plan	$	150	$	1,565
Effective price per share⁽¹⁾	$	125.50	$	101.75
Reduction in equivalent number of shares of class A common stock	1		15
Conversion rate of class B common stock to class A common stock after deposits	0.4206		0.4254
As-converted class B common stock after deposits	103		104


⁽¹⁾	Effective price per share calculated using the volume-weighted average price of the Company's class A common stock over a pricing period in accordance with the Company's current certificate of incorporation.