Condensed Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues:
Transaction fees	$ 1,057.0	$ 995.5	$ 2,055.0	$ 1,961.2
Foreign exchange revenues	279.2	249.3	535.3	487.4
Other revenues	30.1	28.6	59.0	57.5
Total revenues	1,366.3	1,273.4	2,649.3	2,506.1
Expenses:
Cost of services	764.2	727.7	1,509.6	1,442.3
Selling, general and administrative	251.4	234.7	476.1	437.0
Total expenses	1,015.6	962.4	1,985.7	1,879.3
Operating income	350.7	311.0	663.6	626.8
Other income/(expense):
Interest income	1.3	0.5	2.5	1.4
Interest expense	(44.2)	(41.1)	(87.6)	(79.9)
Derivative gains/(losses), net	(1.3)	0.7	0.6	(0.2)
Other income, net	26.9	1.2	29.0	0.2
Total other expense, net	(17.3)	(38.7)	(55.5)	(78.5)
Income before income taxes	333.4	272.3	608.1	548.3
Provision for income taxes	70.2	51.3	134.7	119.4
Net income	$ 263.2	$ 221.0	$ 473.4	$ 428.9
Earnings per share:
Basic	$ 0.42	$ 0.33	$ 0.74	$ 0.63
Diluted	$ 0.41	$ 0.33	$ 0.74	$ 0.63
Weighted-average shares outstanding:
Basic	631.1	669.3	639.0	675.6
Diluted	635.8	671.6	644.0	677.9