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Lease Commitments (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Lease Commitments | |||
| Percentage of Aon's lease obligations for the use of office space | 88.00% | ||
| Rental expenses for operating leases | |||
| Rental expense | $ 525 | $ 429 | $ 346 |
| Sub lease rental income | 71 | 57 | 52 |
| Net rental expense | 454 | 372 | 294 |
| Future minimum rental payments under operating leases | |||
| 2012 | 395 | ||
| 2013 | 373 | ||
| 2014 | 334 | ||
| 2015 | 296 | ||
| 2016 | 257 | ||
| Thereafter | 984 | ||
| Total minimum payments required | $ 2,639 | ||
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- Definition
For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within one year of the balance sheet date, net of sublease rental income, relating to leases defined as operating. No definition available.
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- Definition
The total of future contractually required payments, net of sublease rental income, on leases defined as operating. No definition available.
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- Definition
For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments, net of sublease rental income, due within the fifth year of the balance sheet date relating to leases defined as operating. No definition available.
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- Definition
For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments, net of sublease rental income, due within the fifth year of the balance sheet date relating to leases defined as operating. No definition available.
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- Definition
For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments, net of sublease rental income due within the third year of the balance sheet date relating to leases defined as operating. No definition available.
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- Definition
For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments, net of sublease rental income, due after the fifth year from the balance sheet date on leases defined as operating. No definition available.
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- Definition
For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments, net of sublease rental income, due within the second year of the balance sheet date relating to leases defined as operating. No definition available.
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- Definition
Represents the percentage of entity's lease obligations for the use of office space. No definition available.
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- Definition
Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses. No definition available.
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- Details
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- Details
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- Details
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- Definition
Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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