Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

Selected quarterly financial data for the years ended December 31, 2013 and 2012 as follows (in millions, except per share data):

	1Q		2Q		3Q		4Q		2013
INCOME STATEMENT DATA
Commissions, fees and other revenue	$	2,908	$	2,891	$	2,786	$	3,202	$	11,787
Fiduciary investment income	7		6		8		7		28
Total revenue	$	2,915	$	2,897	$	2,794	$	3,209	$	11,815
Operating income	$	410	$	382	$	364	515		$	1,671
Net income	272		252		264		360		1,148
Less: Net income attributable to noncontrolling interests	11		11		8		5		35
Net income attributable to Aon shareholders	$	261	$	241	$	256	$	355	$	1,113
PER SHARE DATA
Basic net income per share attributable to Aon shareholders	$	0.82	$	0.77	$	0.83	$	1.16	$	3.57
Diluted net income per share attributable to Aon shareholders	$	0.82	$	0.76	$	0.82	$	1.14	$	3.53
CLASS A ORDINARY SHARE DATA
Dividends paid per share	$	0.16	$	0.18	$	0.18	$	0.18	$	0.68
Price range:
High	$	61.87	$	67.26	$	76.30	$	84.33	$	84.33
Low	$	54.65	$	58.48	$	64.20	$	70.72	$	54.65
Shares outstanding	309.1		307.5		301.0		300.7		300.7
Average monthly trading volume	46.4		34.9		30.9		37.6		37.5

	1Q		2Q		3Q		4Q		2012
INCOME STATEMENT DATA
Commissions, fees and other revenue	$	2,829	$	2,813	$	2,726	$	3,108	$	11,476
Fiduciary investment income	12		8		11		7		38
Total revenue	$	2,841	$	2,821	$	2,737	$	3,115	$	11,514
Operating income	$	402	$	394	$	339	$	461	$	1,596
Net income	249		254		210		307		1,020
Less: Net income attributable to noncontrolling interests	11		8		6		2		27
Net income attributable to Aon shareholders	$	238	$	246	$	204	$	305	$	993
PER SHARE DATA
Basic net income per share attributable to Aon shareholders	$	0.72	$	0.74	$	0.62	$	0.95	$	3.02
Diluted net income per share attributable to Aon shareholders	$	0.71	$	0.73	$	0.62	$	0.93	$	2.99
CLASS A ORDINARY SHARE DATA
Dividends paid per share	$	0.15	$	0.16	$	0.16	$	0.16	$	0.62
Price range:
High	$	49.51	$	52.61	$	53.35	$	57.92	$	57.92
Low	$	45.58	$	45.04	$	45.87	$	51.78	$	45.04
Shares outstanding	326.4		322.4		318.7		310.9		310.9
Average monthly trading volume	47.0		47.6		30.1		33.7		39.6