Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue
Total revenue	$ 2,381	$ 2,276
Expenses
Compensation and benefits	1,461	1,345
Information technology	88	83
Premises	84	82
Depreciation of fixed assets	54	38
Amortization of intangible assets	43	37
Other general expenses	308	271
Total operating expenses	2,038	1,856
Operating income	343	420
Interest income	2	2
Interest expense	(70)	(69)
Other income (expense)	(10)	18
Income from continuing operations before income taxes	265	371
Income taxes	0	59
Income from continuing operations	265	312
Income from discontinued operations, net of tax	40	25
Net income	305	337
Less: Net income attributable to noncontrolling interests	14	12
Net income attributable to Aon shareholders	$ 291	$ 325
Basic net income per share attributable to Aon shareholders, continuing operations (in dollars per share)	$ 0.95	$ 1.11
Basic net income per share attributable to Aon shareholders, discontinued operations (in dollars per share)	0.15	0.09
Basic net income per share attributable to Aon shareholders (in dollars per share)	1.10	1.20
Net income per diluted share attributable to Aon shareholders, continuing operations (in dollars per share)	0.94	1.10
Net income per diluted share attributable to Aon shareholders, discontinued operations (in dollars per share)	0.15	0.09
Diluted net income per share attributable to Aon shareholders (in dollars per share)	1.09	1.19
Cash dividends per share paid on ordinary shares (in dollars per share)	$ 0.33000000	$ 0.3
Weighted average ordinary shares outstanding - basic (in shares)	264.8	271.7
Weighted average ordinary shares outstanding - diluted (in shares)	267.0	273.7