Earnings Per Share (Tables)

6 Months Ended

Mar. 31, 2013

The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions):



	Three Months Ended March 31,				Six Months Ended March 31,
	2013		2012		2013		2012
Income Available to Common Shareholders
Basic income available to common shareholders	$	148	$	379	$	502	$	803
Interest expense, net of tax	—		—		—		1
Diluted income available to common shareholders	$	148	$	379	$	502	$	804

Weighted Average Shares Outstanding
Basic weighted average shares outstanding	684.0		680.0		683.6		679.9
Effect of dilutive securities:
Stock options and unvested restricted stock	5.4		6.2		4.4		5.9
Equity units	—		3.7		—		3.7
Diluted weighted average shares outstanding	689.4		689.9		688.0		689.5

Antidilutive Securities
Options to purchase common shares	0.5		0.7		1.6		1.1