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Restructuring | 12 Months Ended
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Dec. 31, 2014
Restructuring and Related Activities [Abstract] |
Restructuring | Restructuring Aon Hewitt Restructuring Plan On October 14, 2010, the Company announced a global restructuring plan ("Aon Hewitt Plan") in connection with the acquisition of Hewitt Associates, Inc. The Aon Hewitt Plan was intended to streamline operations across the combined Aon Hewitt organization. The Company incurred all remaining costs for the Aon Hewitt Plan and the plan was closed in the fourth quarter of 2013. For the year ended December 31, 2014, no charges were taken under the Aon Hewitt Plan. For year ended December 31, 2013, $174 million of restructuring expenses were charged, of which $94 million and $80 million were in the Risk Solutions segment and HR Solutions segment, respectively. For the year ended December 31, 2012, $98 million of restructuring expenses were charged, of which $32 million and $66 million were in the Risk Solutions segment and HR Solutions segment, respectively. As of December 31, 2013, the remaining liabilities for the Company's restructuring plans were $166 million. During the year ended December 31, 2014, the Company made cash payments of $83 million, resulting in remaining restructuring liabilities of $76 million as of December 31, 2014. The remaining $7 million reduction is due to fluctuation in foreign exchange rates. The Company's unpaid restructuring liabilities are included in both Accounts payable and accrued liabilities and Other non-current liabilities in the Consolidated Statements of Financial Position.

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- Definition The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 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 Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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