XML 123 R16.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Lease Commitments | 12 Months Ended
--- | ---
Dec. 31, 2014
Leases, Operating [Abstract] |
Lease Commitments | Lease Commitments The Company leases office facilities, equipment and automobiles under non-cancelable operating leases. These leases expire at various dates and may contain renewal and expansion options. In addition to base rental costs, occupancy lease agreements generally provide for rent escalations resulting from increased assessments for real estate taxes and other charges. The Company's lease obligations are primarily for the use of office space. In November 2011, the Company entered into an agreement to lease 190,000 square feet in a building to be constructed at 122 Leadenhall in London, United Kingdom. In August 2014, upon practical completion of the construction, the Company entered into the leases. Aon expects to move into the new building in 2015 when it exercises an early break option at the Devonshire Square location. Rental expenses (including amounts applicable to taxes, insurance and maintenance) for operating leases are as follows (in millions):
Years ended December 31 | 2014 |  | 2013 |  | 2012
Rental expense | $ | 455 |  |  | $ | 520 |  |  | $ | 536 |
Sub lease rental income | 75 |  |  | 77 |  |  | 72 |
Net rental expense | $ | 380 |  |  | $ | 443 |  |  | $ | 464 |
At December 31, 2014, future minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year, net of sublease rental income, are as follows (in millions):
2015 | $ | 362 |
2016 | 333 |
2017 | 297 |
2018 | 270 |
2019 | 240 |
Thereafter | 876 |
Total minimum payments required | $ | 2,378 |

X
- Definition The entire disclosure for significant arrangements with third parties, which includes operating lease arrangements and arrangements in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services, and operating lease arrangements. Descriptions may include identification of the specific goods and services, period of time covered, minimum quantities and amounts, and cancellation rights. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.17) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a)(19)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_CommitmentsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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