SUMMARY OF QUARTERLY DATA (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data [Abstract]

Schedule of Selected Quarterly Financial Data

	2011 Quarter Ended
	March 31		June 30		September 30		December 31 1			2011 Total
	(in millions, except per share amounts)
Revenues, net	$	1,501	$	1,667	$	1,818	$	1,728		$	6,714
Operating income (loss)	836		885		1,002		(10		)	2,713
Net income attributable to MasterCard	562		608		717		19			1,906
Basic earnings per share	$	4.31	$	4.77	$	5.65	$	0.15		$	14.90
Basic weighted average shares outstanding	130		127		127		127			128
Diluted earnings per share	$	4.29	$	4.76	$	5.63	$	0.15		$	14.85
Diluted weighted average shares outstanding	131		128		127		127			128
	2010 Quarter Ended
	March 31		June 30		September 30		December 31			2010 Total
	(in millions, except per share amounts)
Revenues, net	$	1,308	$	1,365	$	1,428	$	1,438		$	5,539
Operating income	700		717		766		569			2,752
Net income attributable to MasterCard	455		458		518		415			1,846
Basic earnings per share	$	3.47	$	3.50	$	3.96	$	3.17		$	14.10
Basic weighted average shares outstanding	130		131		131		131			131
Diluted earnings per share	$	3.46	$	3.49	$	3.94	$	3.16		$	14.05
Diluted weighted average shares outstanding	131		131		131		131			131

¹ Financial results for the three months ended December 31, 2011 include a $770 million charge for the U.S. merchant litigation. See Note 20 (Legal and Regulatory Proceedings) to the consolidated financial statements included in Part II, Item 8 of this Report for further discussion.