XML 151 R117.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Commitments and Contingencies - Guarantees and Indemnifications Narrative (Details) |  |  |  |  |  | 0 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2014 Commitments to fund certain limited partnerships or subsidiaries [Member] USD ($) | Dec. 31, 2013 Commitments to fund certain limited partnerships or subsidiaries [Member] USD ($) | Jun. 15, 2011 Commitments to fund certain limited partnerships or subsidiaries [Member] Subsidiaries [Member] Term Credit Agreement [Member] USD ($) | Mar. 20, 2012 Commitments to fund certain limited partnerships or subsidiaries [Member] Subsidiaries [Member] Five-Year Agreement [Member] | Mar. 20, 2012 Commitments to fund certain limited partnerships or subsidiaries [Member] Subsidiaries [Member] Five-Year Agreement [Member] USD ($) | Oct. 15, 2010 Commitments to fund certain limited partnerships or subsidiaries [Member] Subsidiaries [Member] Euro Facility Agreement [Member] EUR (€)
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Maximum potential funding under commitments | $ 112,000,000 us-gaap_GuaranteeObligationsMaximumExposure | $ 98,000,000 us-gaap_GuaranteeObligationsMaximumExposure | $ 14,000,000 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_FinancialGuaranteeMember | $ 34,000,000 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_FinancialGuaranteeMember | $ 450,000,000 us-gaap_GuaranteeObligationsMaximumExposure / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = aon_TermLoanCreditFacility2011Member / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_FinancialGuaranteeMember |  | $ 400,000,000 us-gaap_GuaranteeObligationsMaximumExposure / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = aon_RevolvingCreditAgreementMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_FinancialGuaranteeMember | € 650,000,000 us-gaap_GuaranteeObligationsMaximumExposure / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_LongtermDebtTypeAxis = aon_MultiCurrencyRevolvingLoanCreditFacilityEnteredIntoIn2010Member / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_FinancialGuaranteeMember
Term of credit agreement |  |  |  |  |  | 5 years |  |

X
- Definition Represents the term of the debt agreement. + References No definition available. + Details
Name: | aon_DebtInstrumentMaturityTerm
Namespace Prefix: | aon_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration