Consolidated Statement of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Income Statement [Abstract]
Revenues, net	$ 7,391		$ 6,714		$ 5,539
Operating Expenses
General and administrative	2,429		2,196		1,857
Advertising and marketing	775		841		782
Provision for litigation settlement	20		770		0
Depreciation and amortization	230		194		148
Total operating expenses	3,454		4,001		2,787
Operating income	3,937		2,713		2,752
Other Income (Expense)
Investment income	37		52		57
Interest expense	(20)		(25)		(52)
Other income (expense), net	(22)		6		0
Total other income (expense)	(5)		33		5
Total income before income taxes	3,932		2,746		2,757
Income tax expense	1,174		842		910
Net income	2,758		1,904		1,847
Loss (income) attributable to non-controlling interests	1		2		(1)
Net Income Attributable to MasterCard	$ 2,759		$ 1,906		$ 1,846
Basic Earnings per Share	$ 22.02		$ 14.90		$ 14.10
Basic Weighted-Average Shares Outstanding	125		128		131
Diluted Earnings per Share	$ 21.94		$ 14.85		$ 14.05
Diluted Weighted-Average Shares Outstanding	126	[1]	128	[1]	131	[1]

[1] For the years presented, the calculation of diluted EPS excluded a minimal amount of anti-dilutive share-based payment awards.