Earnings Per Share (Tables)

6 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Earnings Per Share

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,
	2016			2015		2016			2015
Income (Loss) Available to Common Shareholders
Income (loss) from continuing operations	$	(530	)	$	452	$	(80	)	$	933
Income from discontinued operations	—			77		—			103
Basic and diluted income (loss) available to common      shareholders	$	(530	)	$	529	$	(80	)	$	1,036
Weighted Average Shares Outstanding
Basic weighted average shares outstanding	648.2			654.4		648.0			657.9
Effect of dilutive securities:
Stock options, unvested restricted stock and      unvested performance share awards	—			6.8		—			6.8
Diluted weighted average shares outstanding	648.2			661.2		648.0			664.7
Antidilutive Securities
Options to purchase common shares	—			0.5		—			0.4