Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenue	$ 3,264	$ 3,126
Expense:
Compensation and benefits	1,839	1,803
Other operating expenses	752	716
Operating expenses	2,591	2,519
Operating income	673	607
Interest income	5	4
Interest expense	(42)	(44)
Investment income	13	21
Income before income taxes	649	588
Income tax expense	192	176
Income from continuing operations	457	412
Discontinued operations, net of tax	(1)	12
Net income before non-controlling interests	456	424
Less: Net income attributable to non-controlling interests	13	11
Net income attributable to the Company	$ 443	$ 413
Basic net income per share
- Continuing operations	$ 0.81	$ 0.73
– Net income attributable to the Company	$ 0.81	$ 0.75
Diluted net income per share
- Continuing operations	$ 0.80	$ 0.72
– Net income attributable to the Company	$ 0.80	$ 0.74
Average number of shares outstanding
- Basic (in shares)	548	548
- Diluted (in shares)	556	557
Shares outstanding at March 31	549	550