Computation of Diluted EPS
		Three Months Ended March 31
			2013					2012
(in millions, except per share data)			Net Income Attributable to Comcast Corporation	Shares		Per Share Amount		Net Income Attributable to Comcast Corporation	Shares		Per Share Amount
Basic EPS attributable to Comcast Corporation shareholders		$	1,437	2,634	$	0.55	$	1,224	2,708	$	0.45
Effect of dilutive securities:
Assumed exercise or issuance of shares relating to stock
	plans			41					36
Diluted EPS attributable to Comcast Corporation
	shareholders	$	1,437	2,675	$	0.54	$	1,224	2,744	$	0.45

Our potentially dilutive securities include potential common shares related to our stock options and our restricted share units (“RSUs”). Diluted earnings per common share attributable to Comcast Corporation shareholders (“diluted EPS”) considers the impact of potentially dilutive securities using the treasury stock method. Diluted EPS excludes the impact of potential common shares related to our stock options in periods in which the option exercise price is greater than the average market price of our Class A common stock or our Class A Special common stock, as applicable.

Diluted EPS for the three months ended March 31, 2013 and 2012 excludes 2 million and 26 million, respectively, of potential common shares related to our share-based compensation plans, because the inclusion of the potential common shares would have had an antidilutive effect.