Computation of Diluted EPS
		Three Months Ended June 30
		2012					2011
(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		$	1,348	2,687	$	0.50	$	1,022	2,759	$	0.37
Effect of dilutive securities:
	Assumed exercise or issuance of shares relating to stock plans			30					30
Diluted EPS attributable to Comcast Corporation shareholders		$	1,348	2,717	$	0.50	$	1,022	2,789	$	0.37

		Six Months Ended June 30
		2012					2011
(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		$	2,572	2,697	$	0.95	$	1,965	2,765	$	0.71
Effect of dilutive securities:
	Assumed exercise or issuance of shares relating to stock plans			36					34
Diluted EPS attributable to Comcast Corporation shareholders		$	2,572	2,733	$	0.94	$	1,965	2,799	$	0.70

Diluted earnings per common share attributable to Comcast Corporation shareholders (“diluted EPS”) for the three and six months ended June 30, 2012 excludes 44 million and 35 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. For the three and six months ended June 30, 2011, diluted EPS excluded 52 million and 43 million, respectively, of potential common shares.