v2.3.0.15

Restructuring (Details 2) (USD $) In Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2011 | Dec. 31, 2010
Restructuring Reserve |  |
Beginning balance | $ 237 | $ 263
Assumed Hewitt restructuring liability |  | 43
Expensed | 63 | 168
Cash payments | (131) | (232)
Foreign exchange translation and other | 6 | (5)
Ending balance | 175 | 237
Aon Hewitt Restructuring Plan |  |
Restructuring Reserve |  |
Beginning balance | 88 |
Assumed Hewitt restructuring liability |  | 43
Expensed | 73 | 52
Cash payments | (70) | (8)
Foreign exchange translation and other | 1 | 1
Ending balance | 92 | 88
Aon Benfield Restructuring Plan |  |
Restructuring Reserve |  |
Beginning balance | 26 | 45
Expensed | (2) | 24
Cash payments | (14) | (38)
Foreign exchange translation and other | (1) | (5)
Ending balance | 9 | 26
2007 Restructuring Plan |  |
Restructuring Reserve |  |
Beginning balance | 113 | 202
Expensed | (8) | 92
Cash payments | (45) | (178)
Foreign exchange translation and other | 6 | (3)
Ending balance | 66 | 113
Other Restructuring Plan |  |
Restructuring Reserve |  |
Beginning balance | 10 | 16
Cash payments | (2) | (8)
Foreign exchange translation and other |  | 2
Ending balance | $ 8 | $ 10

X
- Definition The amount of acquisition cost of a business combination allocated to liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph g Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 + Details
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X
- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination and to asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 95-3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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X
- Definition Reserve increase representing the amount charged against earnings in the period for a specified incurred and estimated type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + Details
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- Definition Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 95-3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 + Details
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- Definition Amount of foreign currency translation adjustment increasing or decreasing the accrual for a specified type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 95-3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 + Details
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