v2.3.0.15

Investments (Tables)

9 Months Ended

Sep. 30, 2011

Investments

Schedule of interest bearing assets

		September 30,			December 31,
		2011			2010
Cash and cash equivalents		$	295		$	346
Short-term investments		607			785
Fiduciary assets		4,109			3,489
Investments		254			312
		$	5,265		$	4,932

Schedule of investments

		September 30,			December 31,
		2011			2010
Equity method investments		$	172		$	174
Other investments, at cost (1)		67			123
Fixed-maturity securities		15			15
		$	254		$	312

X

- Details

Name:	aon_InvestmentsDisclosureAbstract
Namespace Prefix:	aon
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element encapsulates the entire schedule disclosing the types of interest bearing assets as of the balance sheet date.

+ Details

Name:	aon_ScheduleOfInterestBearingAssetsTextBlock
Namespace Prefix:	aon
Data Type:	us-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element encapsulates the entire schedule disclosing the types of long-term investments as of the balance sheet date.

+ Details

Name:	aon_ScheduleOfLongTermInvestmentsTextBlock
Namespace Prefix:	aon
Data Type:	us-types:textBlockItemType
Balance Type:	na
Period Type:	duration