10-Q

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_____________________________________________ 

FORM 10-Q Filing

_____________________________________________ 

Quarterly Report Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

For the quarterly period ended September 30, 2013

_____________________________________________ 

Marsh & McLennan Companies, Inc.

1166 Avenue of the Americas

New York, New York 10036

(212) 345-5000

_____________________________________________ 

Commission file number 1-5998

State of Incorporation: Delaware

I.R.S. Employer Identification No. 36-2668272

_____________________________________________ 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ý    No   ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting Company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting Company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer  x	Accelerated Filer  ¨
Non-Accelerated Filer  ¨(Do not check if a smaller reporting company)	Smaller Reporting Company  ¨

Indicate by check mark whether the registrant is a shell Company (as defined in Rule 12b-2 of the Exchange Act).     Yes  ¨    No  ý

As of October 31, 2013, there were outstanding 548,775,659 shares of common stock, par value $1.00 per share, of the registrant.

INFORMATION CONCERNING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains “forward-looking statements,” as defined in the Private Securities Litigation Reform Act of 1995. These statements, which express management's current views concerning future events or results, use words like “anticipate,” “assume,” “believe,” “continue,” “estimate,” “expect,” “future,” “intend,” “plan,” “project” and similar terms, and future or conditional tense verbs like “could,” “may,” “might,” “should,” “will” and “would.” For example, we may use forward-looking statements when addressing topics such as: the outcome of contingencies; the expected impact of acquisitions and dispositions; the impact of competition; pension obligations; the impact of foreign currency exchange rates; our effective tax rates; changes in our business strategies and methods of generating revenue; the development and performance of our services and products; changes in the composition or level of our revenues; our cost structure, dividend policy, cash flow and liquidity; future actions by regulators; and the impact of changes in accounting rules.

Forward-looking statements are subject to inherent risks and uncertainties. Factors that could cause actual results to differ materially from those expressed or implied in our forward-looking statements include, among other things:

• our exposure to potential liabilities arising from errors and omissions claims against us;

• our ability to make acquisitions and dispositions and to integrate, and realize expected synergies, savings or benefits from the businesses we acquire;

• the impact of competition, including with respect to our geographic reach, the sophistication and quality of our services, our pricing relative to competitors, our customers' option to self-insure or utilize internal resources instead of consultants, and our corporate tax rates relative to a number of our competitors;

• the extent to which we retain existing clients and attract new business, and our ability to incentivize and retain key employees;

• our ability to maintain adequate physical, technical and administrative safeguards to protect the security of data and the potential of a system or network disruption that results in regulatory penalties, remedial costs and/or the improper disclosure of data;

• our exposure to potential criminal sanctions or civil remedies if we fail to comply with foreign and U.S. laws and regulations that are applicable to our international operations, including trade sanctions laws relating to countries such as Cuba, Iran, Sudan and Syria, anti-corruption laws such as the U.S. Foreign Corrupt Practices Act and the U.K. Bribery Act 2010, local laws prohibiting corrupt payments to government officials, as well as import and export restrictions;

• changes in the funded status of our global defined benefit pension plans and the impact of any increased pension funding resulting from those changes;

• our ability to successfully recover should we experience a disaster or other business continuity problem, such as an earthquake, hurricane, flood, terrorist attack, pandemic, security breach, cyber attack, power loss, telecommunications failure or other natural or man-made disaster;

• the impact of changes in interest rates and deterioration of counterparty credit quality on our results related to our cash balances and investment portfolios, including corporate and fiduciary funds;

• the impact on our net income caused by fluctuations in foreign currency exchange rates;

• the potential impact of rating agency actions on our cost of financing and ability to borrow, as well as on our operating costs and competitive position;

• changes in applicable tax or accounting requirements; and

• potential income statement effects from the application of FASB's ASC Topic No. 740 (“Income Taxes”) regarding accounting treatment of uncertain tax benefits and valuation allowances, including the effect of any subsequent adjustments to the estimates we use in applying this accounting standard.

The factors identified above are not exhaustive. Marsh & McLennan Companies and its subsidiaries operate in a dynamic business environment in which new risks may emerge frequently. Accordingly, we caution readers not to place undue reliance on the above forward-looking statements, which speak only as of the dates on which they are made. The Company undertakes no obligation to update or revise any forward-looking statement to reflect events or circumstances arising after the date on which it is made. Further information concerning Marsh & McLennan Companies and its businesses, including information about factors that could materially affect our results of operations and financial condition, is contained in the Company's filings with the Securities and Exchange Commission, including the “Risk Factors” section of our most recently filed Annual Report on

Form 10-K.

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TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION		4
ITEM 1.	FINANCIAL STATEMENTS (UNAUDITED)	4
	CONSOLIDATED STATEMENTS OF INCOME	4
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	5
	CONSOLIDATED BALANCE SHEETS	6
	CONSOLIDATED BALANCE SHEETS (Continued)	7
	CONSOLIDATED STATEMENTS OF CASH FLOWS	8
	CONSOLIDATED STATEMENTS OF EQUITY	9
	NOTES TO CONSOLIDATED FINANCIAL STATEMENTS	10
ITEM 2.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS	31
	OF OPERATIONS
ITEM 3.	QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK	41
ITEM 4.	CONTROLS & PROCEDURES	42
PART II. OTHER INFORMATION		43
ITEM 1.	LEGAL PROCEEDINGS	43
ITEM 1A.	RISK FACTORS	43
ITEM 2.	UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	43
ITEM 3.	DEFAULTS UPON SENIOR SECURITIES	44
ITEM 4.	MINE SAFETY DISCLOSURE	44
ITEM 5.	OTHER INFORMATION	44
ITEM 6.	EXHIBITS	44

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PART I.    FINANCIAL INFORMATION

Item 1. Financial Statements.

MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
(In millions, except per share figures)	2013			2012			2013			2012
Revenue	$	2,932		$	2,845		$	9,146		$	8,922
Expense:
Compensation and benefits	1,824			1,760			5,393			5,332
Other operating expenses	704			707			2,165			2,167
Operating expenses	2,528			2,467			7,558			7,499
Operating income	404			378			1,588			1,423
Interest income	5			6			13			18
Interest expense	(40		)	(44		)	(124		)	(135		)
Investment income	14			(4		)	58			20
Income before income taxes	383			336			1,535			1,326
Income tax expense	123			90			463			387
Income from continuing operations	260			246			1,072			939
Discontinued operations, net of tax	(1		)	1			6			(1		)
Net income before non-controlling interests	259			247			1,078			938
Less: Net income attributable to non-controlling interests	6			6			24			21
Net income attributable to the Company	$	253		$	241		$	1,054		$	917
Basic net income per share – Continuing operations	$	0.46		$	0.44		$	1.91		$	1.68
– Net income attributable to the Company	$	0.46		$	0.44		$	1.92		$	1.68
Diluted net income per share – Continuing operations	$	0.45		$	0.43		$	1.88		$	1.66
– Net income attributable to the Company	$	0.45		$	0.44		$	1.89		$	1.66
Average number of shares outstanding – Basic	549			544			549			544
– Diluted	558			552			558			552
Shares outstanding at September 30	547			544			547			544

The accompanying notes are an integral part of these consolidated statements.

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MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
(In millions)	2013			2012			2013			2012
Net income before non-controlling interests	$	259		$	247		$	1,078		$	938
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	254			171			(91		)	142
Unrealized investment loss	—			—			(1		)	(1		)
Gain (loss) related to pension/post-retirement plans	(37		)	(72		)	265			62
Other comprehensive income, before tax	217			99			173			203
Tax expense (benefit) on other comprehensive income	(5		)	(11		)	79			20
Other comprehensive income, net of tax	222			110			94			183
Comprehensive income	481			357			1,172			1,121
Less: comprehensive income attributable to non-controlling interest	6			6			24			21
Comprehensive income attributable to the Company	$	475		$	351		$	1,148		$	1,100

The accompanying notes are an integral part of these consolidated statements.

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MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In millions, except per share figures)	September 30, 2013 (Unaudited)			December 31, 2012
ASSETS
Current assets:
Cash and cash equivalents	$	2,174		$	2,301
Receivables
Commissions and fees	3,120			2,858
Advanced premiums and claims	62			62
Other	219			244
	3,401			3,164
Less-allowance for doubtful accounts and cancellations	(107		)	(106		)
Net receivables	3,294			3,058
Current deferred tax assets	459			410
Other current assets	234			194
Total current assets	6,161			5,963
Goodwill and intangible assets	7,353			7,261
Fixed assets (net of accumulated depreciation and amortization of $1,611 at September 30, 2013 and $1,582 at December 31, 2012)	824			809
Pension related assets	780			260
Deferred tax assets	1,020			1,223
Other assets	838			772
	$	16,976		$	16,288

The accompanying notes are an integral part of these consolidated statements.

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MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Continued)

(In millions, except per share figures)	September 30, 2013 (Unaudited)			December 31, 2012
LIABILITIES AND EQUITY
Current liabilities:
Short-term debt	$	583		$	260
Accounts payable and accrued liabilities	1,830			1,721
Accrued compensation and employee benefits	1,194			1,473
Accrued income taxes	148			110
Dividends payable	138			—
Total current liabilities	3,893			3,564
Fiduciary liabilities	4,657			3,992
Less – cash and investments held in a fiduciary capacity	(4,657		)	(3,992		)
	—			—
Long-term debt	2,623			2,658
Pension, post-retirement and post-employment benefits	1,975			2,094
Liabilities for errors and omissions	380			460
Other liabilities	985			906
Commitments and contingencies
Equity:
Preferred stock, $1 par value, authorized 6,000,000 shares, none issued	—			—
Common stock, $1 par value, authorized
1,600,000,000 shares, issued 560,641,640 shares at September 30, 2013
and December 31, 2012	561			561
Additional paid-in capital	1,010			1,107
Retained earnings	9,151			8,628
Accumulated other comprehensive loss	(3,213		)	(3,307		)
Non-controlling interests	78			64
	7,587			7,053
Less – treasury shares, at cost, 13,338,019 shares at September 30, 2013
and 15,133,774 shares at December 31, 2012	(467		)	(447		)
Total equity	7,120			6,606
	$	16,976		$	16,288

The accompanying notes are an integral part of these consolidated statements.

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MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

For the Nine Months Ended September 30,
(In millions)	2013			2012
Operating cash flows:
Net income before non-controlling interests	$	1,078		$	938
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software	213			201
Amortization of intangible assets	53			53
Intangible asset impairment	5			8
Adjustments to acquisition related contingent consideration liability	16			(32		)
Provision for deferred income taxes	137			18
Gain on investments	(58		)	(19		)
Loss on disposition of assets	1			13
Stock option expense	15			23
Changes in assets and liabilities:
Net receivables	(229		)	(148		)
Other current assets	(71		)	19
Other assets	(564		)	(204		)
Accounts payable and accrued liabilities	47			(208		)
Accrued compensation and employee benefits	(279		)	(176		)
Accrued income taxes	39			88
Other liabilities	174			201
Effect of exchange rate changes	(2		)	(25		)
Net cash provided by operations	575			750
Financing cash flows:
Purchase of treasury shares	(400		)	(180		)
Proceeds from debt	546			248
Repayments of debt	(257		)	(257		)
Shares withheld for taxes on vested units – treasury shares	(74		)	(92		)
Issuance of common stock from treasury shares	254			151
Payments of contingent consideration for acquisitions	(8		)	(20		)
Distributions of non-controlling interests	(17		)	(5		)
Dividends paid	(394		)	(369		)
Net cash used for financing activities	(350		)	(524		)
Investing cash flows:
Capital expenditures	(288		)	(249		)
Net sales of long-term investments	90			26
Proceeds from sales of fixed assets	2			4
Dispositions	3			2
Acquisitions	(108		)	(153		)
Other, net	2			1
Net cash used for investing activities	(299		)	(369		)
Effect of exchange rate changes on cash and cash equivalents	(53		)	74
Decrease in cash and cash equivalents	(127		)	(69		)
Cash and cash equivalents at beginning of period	2,301			2,113
Cash and cash equivalents at end of period	$	2,174		$	2,044

The accompanying notes are an integral part of these consolidated statements.

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MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY

(Unaudited)

For the Nine Months Ended September 30,
(In millions, except per share figures)	2013			2012
COMMON STOCK
Balance, beginning and end of period	$	561		$	561
ADDITIONAL PAID-IN CAPITAL
Balance, beginning of year	$	1,107		$	1,156
Change in accrued stock compensation costs	(45		)	(45		)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact	(52		)	(36		)
Purchase of subsidiary shares from non-controlling interests	—			1
Balance, end of period	$	1,010		$	1,076
RETAINED EARNINGS
Balance, beginning of year	$	8,628		$	7,949
Net income attributable to the Company	1,054			917
Dividend equivalents declared (per share amounts: $0.96 in 2013 and $0.90 in 2012)	(5		)	(6		)
Dividends declared – (per share amounts: $0.96 in 2013 and $0.90 in 2012)	(526		)	(489		)
Balance, end of period	$	9,151		$	8,371
ACCUMULATED OTHER COMPREHENSIVE GAIN (LOSS)
Balance, beginning of year	$	(3,307	)	$	(3,188	)
Other comprehensive income, net of tax	94			183
Balance, end of period	$	(3,213	)	$	(3,005	)
TREASURY SHARES
Balance, beginning of year	$	(447	)	$	(595	)
Issuance of shares under stock compensation plans and employee stock purchase plans	380			282
Purchase of treasury shares	(400		)	(180		)
Balance, end of period	$	(467	)	$	(493	)
NON-CONTROLLING INTERESTS
Balance, beginning of year	$	64		$	57
Net income attributable to non-controlling interests	24			21
Distributions	(17		)	(5		)
Other changes	7			(3		)
Balance, end of period	$	78		$	70
TOTAL EQUITY	$	7,120		$	6,580

The accompanying notes are an integral part of these consolidated statements.

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MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1.     Nature of Operations

Marsh & McLennan Companies, Inc. (“the Company”), a global professional services firm, is organized based on the different services that it offers. Under this organizational structure, the Company’s two business segments are Risk and Insurance Services and Consulting.

The Risk and Insurance Services segment provides risk management and insurance broking, reinsurance broking and insurance program management services for businesses, public entities, insurance companies, associations, professional services organizations, and private clients. The Company conducts business in this segment through Marsh and Guy Carpenter.

The Company conducts business in its Consulting segment through two main business groups. Mercer provides consulting expertise, advice, services and solutions in the areas of talent, health, retirement and investments. Oliver Wyman Group provides specialized management, economic and brand consulting services.

Acquisitions impacting the Risk and Insurance Services and Consulting segments are discussed in Note 7 to the consolidated financial statements.

The Company has "continuing involvement" in certain Corporate Advisory and Restructuring businesses (“CARG”), that were disposed of in 2008. The run-off of the CARG business is being managed by the Company’s corporate departments and financial results of these entities are included in “Corporate” for segment reporting purposes.

2.     Principles of Consolidation and Other Matters

The consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been omitted pursuant to such rules and regulations for interim filings, although the Company believes that the information and disclosures presented are adequate to make such information and disclosures not misleading. These consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012 (the “2012 10-K”) and the amended Items 7 and 8 of the Annual Report filed May 10, 2013.

The financial information contained herein reflects all adjustments consisting only of normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the Company’s results of operations for the three- and nine- month periods ended September 30, 2013 and 2012.

Cash and Cash Equivalents

Cash and cash equivalents primarily consist of certificates of deposit and time deposits, with original maturities of three months or less, and money market funds. The estimated fair value of the Company's cash and cash equivalents approximates their carrying value. The Company is required to maintain operating funds of approximately $250 million related to regulatory requirements outside the U.S. or as collateral under captive insurance arrangements.

Investment Income

The caption “Investment income” in the consolidated statements of income comprises realized and unrealized gains and losses from investments recognized in current earnings. It includes, when applicable, other than temporary declines in the value of debt and available for sale securities and the change in value of the Company’s holdings in certain private equity funds, including equity method gains (losses) on its investment in the Trident funds. The Company’s investments may include direct investments in insurance or consulting companies and investments in private equity funds. The Company recorded(losses)gains on its investment in Trident II of $0 million and $(1) million for the three months endedSeptember 30, 2013 and 2012, respectively, and $20 million and $23 million for the nine months endedSeptember 30, 2013 and 2012, respectively, including $15 million of deferred performance fees recognized in the first quarter of 2013. Trident II has now harvested substantially all its portfolio investments and there are no remaining capital commitments for this fund. The Company has recognized substantially all of the

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performance fees related to its general partnership interest in Trident II. Investment income for the three- and nine- months ended September 30, 2013 includes performance fees of $13 million and $34 million, respectively, which had been deferred, that are no longer subject to claw-back from Trident III. At September 30, 2013, the Company has deferred performance fees of approximately $43 million related to Trident III. Recognition of these deferred performance fees will only occur as investments are harvested and the performance fees are no longer subject to claw-back. Timing of this is unknown and is not controlled by the Company.

Income Taxes

The Company's effective tax rate in the third quarter of 2013 was 32.1%. This rate reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation and the impact of tax rate changes on the Company's deferred tax assets and liabilities.

The Company's effective tax rate in the third quarter of 2012 was 26.8%. As discussed above, this rate reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation. In addition, it reflects several discrete tax benefits, including the benefit from recording previously unrecognized tax benefits as a result of expiring statutes of limitations for U.S. federal tax years 2006 and 2008, and a favorable permanent difference related to a tax-free adjustment to the estimated liability for contingent consideration. Partially offsetting these benefits in the quarter were charges to increase unrecognized tax benefits for certain operations in Asia and U.S. tax costs related to actions taken during the quarter to reduce positions in the Euro currency held by certain of the Company's non-U.S. operations.

The effective tax rate for the first nine months of 2013 was 30.1% compared with 29.2% for the first nine months of 2012. The rate in both periods reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation, and the impact of discrete tax matters such as the resolution of tax examinations.

The Company is routinely examined by tax authorities in the jurisdictions in which it has significant operations. The Company regularly considers the likelihood of assessments in each of the taxing jurisdictions resulting from examinations. When evaluating the potential imposition of penalties, the Company considers a number of relevant factors under penalty statutes, including appropriate disclosure of the tax return position, the existence of legal authority supporting the Company's position, and reliance on the opinion of professional tax advisors.

The Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in tax returns. The Company's gross unrecognized tax benefits increased from

$117 million at December 31, 2012 to $133 million at September 30, 2013. It is reasonably possible that the total amount of unrecognized tax benefits will decrease between zero and approximately $20 million within the next twelve months due to settlement of audits and expiration of statutes of limitation.

3.     Fiduciary Assets and Liabilities

In its capacity as an insurance broker or agent, the Company collects premiums from insureds and, after deducting its commissions, remits the premiums to the respective insurance underwriters. The Company also collects claims or refunds from underwriters on behalf of insureds. Unremitted insurance premiums and claims proceeds are held by the Company in a fiduciary capacity. Risk and Insurance Services revenue includes interest on fiduciary funds of $21 million and $31 million for the nine-month periods ended September 30, 2013 and 2012, respectively. The Consulting segment recorded fiduciary interest income of $3 million and $2 million in the nine-month periods ended September 30, 2013 and 2012, respectively. Since fiduciary assets are not available for corporate use, they are shown in the consolidated balance sheets as an offset to fiduciary liabilities.

Net uncollected premiums and claims and the related payables amounted to $9 billion at September 30, 2013 and $9.1 billion atDecember 31, 2012. The Company is not a principal to the contracts under which the right to receive premiums or the right to receive reimbursement of insured losses arises. Net uncollected premiums and claims and the related payables are, therefore, not assets and liabilities of the Company and are not included in the accompanying consolidated balance sheets.

In certain instances, the Company advances premiums, refunds or claims to insurance underwriters or insureds prior to collection. These advances are made from corporate funds and are reflected in the accompanying consolidated balance sheets as receivables.

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Mercer manages approximately $17 billion of assets in trusts or funds for which Mercer’s management or trustee fee is considered a variable interest. Mercer is not the primary beneficiary of these trusts or funds. Mercer’s only variable interest in any of these trusts or funds is its unpaid fees, if any. Mercer’s maximum exposure to loss of its interests is, therefore, limited to collection of its fees.

4.    Per Share Data

From 2009 through 2012, the Company used the two-class method to compute basic and diluted earnings per share ("EPS"). Under the accounting guidance which applies to the calculation of EPS for share-based payment awards with rights to dividends or dividend equivalents, unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and should be included in the computation of basic and dilutive EPS using the two-class method.

In the first quarter of 2013, the share-based payment awards with non-forfeitable rights to dividends became fully vested. As a result, the Company is no longer required to use the two-class method and in the first quarter of 2013 used the treasury stock method to calculate EPS. There was no difference in the earnings per share calculations when comparing the two-class method to the treasury stock method in any quarter of 2012. Therefore, the prior period information in the chart below shows the earnings per share calculation using the treasury stock method, consistent with current year presentation.

Basic net income per share attributable to the Company and income from continuing operations per share are calculated by dividing the respective after-tax income by the weighted average number of outstanding shares of the Company’s common stock.

Diluted net income per share attributable to the Company and income from continuing operations per share are calculated by dividing the respective after-tax income by the weighted average number of outstanding shares of the Company’s common stock, which have been adjusted for the dilutive effect of potentially issuable common shares. Reconciliations of the applicable income components used for diluted EPS - Continuing operations and basic weighted average common shares outstanding to diluted weighted average common shares outstanding are presented below. The reconciling items related to the calculation of diluted weighted average common shares outstanding are the same for net income attributable to the Company.

Basic and Diluted EPS Calculation - Continuing Operations	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions, except per share figures)	2013		2012		2013		2012
Net income from continuing operations	$	260	$	246	$	1,072	$	939
Less: Net income attributable to non-controlling interests	6		6		24		21
	$	254	$	240	$	1,048	$	918
Basic weighted average common shares outstanding	549		544		549		544
Dilutive effect of potentially issuable common shares	9		8		9		8
Diluted weighted average common shares outstanding	558		552		558		552
Average stock price used to calculate common stock equivalents	$	42.08	$	33.53	$	39.15	$	32.60

There were 24.9 million and 35.1 million stock options outstanding as of September 30, 2013 and 2012, respectively.

5.    Supplemental Disclosures to the Consolidated Statements of Cash Flows

The following schedule provides additional information concerning acquisitions, interest and income taxes paid for the nine-month periods ended September 30, 2013 and 2012.

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(In millions of dollars)	2013			2012
Assets acquired, excluding cash	$	199		$	160
Liabilities assumed	(59		)	(39		)
Contingent/deferred purchase consideration	(37		)	(19		)
Net cash outflow for current year acquisitions	103			102
Purchase of other intangibles	1			—
Deferred purchase consideration from prior years' acquisitions	4			51
Net cash outflow for acquisitions	$	108		$	153

(In millions of dollars)	2013		2012
Interest paid	$	140	$	150
Income taxes paid	$	258	$	237

The Company had non-cash issuances of common stock of $148 million and $187 million, respectively, for the nine months ended September 30, 2013 and 2012, primarily related to its share-based payment plans. The Company recorded stock-based compensation expense related to equity awards of $84 million and $117 million for the nine-month periods ended September 30, 2013 and 2012, respectively.

6.    Other Comprehensive Income (Loss)

The changes in the balances of each component of Accumulated Other Comprehensive Income ("AOCI") for the nine-month period ended September 30, 2013, including amounts reclassified out of AOCI, are as follows:

(In millions of dollars)	Unrealized Investment Gains			Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments			Total
Balance as of January 1, 2013	$	4		$	(3,451	)	$	140		$	(3,307	)
Other comprehensive income (loss) before reclassifications	(1		)	36			(84		)	(49		)
Amounts reclassified from accumulated other comprehensive income	—			143			—			143
Net current period other comprehensive income (loss)	(1		)	179			(84		)	94
Balance as of September 30, 2013	$	3		$	(3,272	)	$	56		$	(3,213	)

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The components of other comprehensive income (loss) for the three and nine-month periods ended September 30, 2013 and 2012 are as follows:

Three Months Ended September 30,	2013									2012
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	254		$	(2	)	$	256		$	171		$	4		$	167
Unrealized investment gains (losses)	—			—			—			—			(1		)	1
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(6		)	(2		)	(4		)	(8		)	(6		)	(2		)
Net actuarial losses (a)	81			26			55			68			52			16
Subtotal	75			24			51			60			46			14
Foreign currency translation adjustments	(106		)	(25		)	(81		)	(132		)	(60		)	(72		)
Other	(6		)	(2		)	(4		)	—			—			—
Pension/post-retirement plans losses	(37		)	(3		)	(34		)	(72		)	(14		)	(58		)
Other comprehensive income (loss)	$	217		$	(5	)	$	222		$	99		$	(11	)	$	110

(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense.

Nine Months Ended September 30,	2013									2012
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	(91	)	$	(7	)	$	(84	)	$	142		$	(10	)	$	152
Unrealized investment gains (losses)	(1		)	—			(1		)	(1		)	1			(2		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(17		)	(6		)	(11		)	(24		)	(11		)	(13		)
Net actuarial losses (a)	237			83			154			202			95			107
Subtotal	220			77			143			178			84			94
Foreign currency translation adjustments	51			11			40			(116		)	(55		)	(61		)
Other	(6		)	(2		)	(4		)	—			—			—
Pension/post-retirement plans losses	265			86			179			62			29			33
Other comprehensive income	$	173		$	79		$	94		$	203		$	20		$	183

(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense.

7.     Acquisitions

The Company completed six acquisitions during the first nine months of 2013.

In September 2013, Marsh purchased an additional stake in Insia a.s., an insurance broker operating in the Czech Republic and Slovakia which, when combined with its prior holdings, gave MMC a controlling interest. Insia a.s. was previously accounted for under the equity method. In August 2013, Mercer acquired Global Remuneration Solutions, a market leading compensation consulting firm based in South Africa. In July 2013, Oliver Wyman acquired Corven, a U.K.-based management consultancy firm and Guy Carpenter acquired Smith Group, a specialist disability reinsurance risk manager and consultant based in Maine. In June 2013, Marsh acquired Rehder y Asociados Group, an insurance adviser in Peru. The business includes the insurance broker Rehder y Asociados and employee health and benefits specialist, Humanasalud. Marsh also completed the acquisition of Franco & Acra Tecniseguros, an insurance advisor in the Dominican Republic in June 2013.

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Total purchase consideration for acquisitions made during the nine months of 2013 was $156 million, which consisted of cash paid of $119 million and deferred purchase and estimated contingent consideration of $37 million. Contingent consideration arrangements are primarily based on EBITDA and revenue targets over two to four years. The fair value of the contingent consideration was based on projected revenue and earnings of the acquired entities. Estimated fair values of assets acquired and liabilities assumed are subject to adjustment when purchase accounting is finalized. The Company also paid $4 million of deferred purchase consideration and $8 million of contingent consideration related to acquisitions made in prior years.

The following table presents the preliminary allocation of the acquisition cost to the assets acquired and liabilities assumed during 2013 based on their fair values:

For the Nine Months Ended September 30,
(Amounts in millions)
Cash	$	119
Estimated fair value of deferred/contingent consideration	37
Total Consideration	$	156
Allocation of purchase price:
Cash and cash equivalents	$	16
Accounts receivable, net	11
Property, plant, and equipment	4
Intangible assets	74
Goodwill	93
Other current assets	17
Total assets acquired	215
Current liabilities	26
Other liabilities	33
Total liabilities assumed	59
Net assets acquired	$	156

Prior Year Acquisitions

During 2012, Marsh completed the following twelve acquisitions:

• January - Marsh acquired Alexander Forbes' South African brokerage operations, including Alexander Forbes Risk Services and insurance broking operations in Botswana and Namibia to expand Marsh's presence in Africa. Marsh subsequently completed the acquisitions of the Alexander Forbes operations in Uganda, Malawi and Zambia.

• March - Marsh & McLennan Agency business ("MMA") acquired KSPH, LLC, a middle-market employee benefits agency based in Virginia, and Marsh acquired Cosmos Services (America) Inc., the U.S. insurance brokerage subsidiary of ITOCHU Corp., which specializes in commercial property/casualty, personal lines, and employee benefits brokerage services to U.S. subsidiaries of Japanese companies.

• June - MMA acquired Progressive Benefits Solutions, an employee benefits agency based in North Carolina, and Security Insurance Services, Inc., a Wisconsin-based insurance agency which offers property/casualty and employee benefits products and services to individuals and businesses.

• August - MMA acquired Rosenfeld-Einstein, a South Carolina-based employee benefits service provider, and Eidson Insurance, a property/casualty and employee benefits services firm located in Florida.

• October - MMA acquired Howalt+McDowell, a South Dakota-based agency which offers property casualty, surety, personal protection and employee benefits insurance to individuals and businesses, and The Protector Group Insurance Agency, a Massachusetts-based agency which provides property/casualty, employee benefits services, personal insurance and individual financial services.

• November - MMA acquired Brower Insurance, an Ohio-based company providing employee benefits, property/casualty and consulting services.

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• December - MMA acquired McGraw Wentworth, a Michigan-based company providing consulting services to mid-sized organizations, and Liscomb Hood Mason, a Minnesota-based company providing property/casualty and employee benefits products and services.

The MMA acquisitions were made to expand Marsh's presence in the U.S. middle-market business.

During 2012, Mercer completed the following three acquisitions:

• February - Mercer acquired the remaining 49% of Yokogawa-ORC, a global mobility firm based in Japan, which was previously accounted for under the equity method, and Pensjon & Finans, a Norwegian financial investment and pension consulting firm.

• March - Mercer acquired REPCA, a France-based broking and advisory firm for employer health and benefits plans.

Total purchase consideration for acquisitions made during the first nine months of 2012 was $205 million which consisted of cash paid of $124 million and estimated contingent consideration of $19 million, and cash held in escrow of $62 million that was released in the first quarter of 2013. The Company also paid $51 million of deferred purchase and contingent consideration related to acquisitions made in prior years.

Pro-Forma Information

While the Company does not believe its acquisitions are material in the aggregate, the following unaudited pro-forma financial data gives effect to the acquisitions made by the Company during the first nine months of 2013 and 2012. In accordance with accounting guidance related to pro-forma disclosure, the information presented for 2013 acquisitions is as if they occurred on January 1, 2012 and reflects acquisitions made in 2012 as if they occurred on January 1, 2011. The pro-forma information adjusts for the effects of amortization of acquired intangibles. The unaudited pro-forma financial data is presented for illustrative purposes only and is not necessarily indicative of the operating results that would have been achieved if such acquisitions had occurred on the dates indicated, nor is it necessarily indicative of future consolidated results.

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions, except per share figures)	2013		2012		2013		2012
Revenue	$	2,935	$	2,883	$	9,192	$	9,057
Income from continuing operations	$	260	$	247	$	1,076	$	947
Net income attributable to the Company	$	253	$	242	$	1,058	$	926
Basic net income per share:
– Continuing operations	$	0.46	$	0.44	$	1.92	$	1.70
– Net income attributable to the Company	$	0.46	$	0.44	$	1.93	$	1.70
Diluted net income per share:
– Continuing operations	$	0.46	$	0.44	$	1.89	$	1.68
– Net income attributable to the Company	$	0.45	$	0.44	$	1.90	$	1.67

The consolidated statements of income includes the results of operations of acquired companies as of their respective acquisition dates. The consolidated statements of income for both the three-month and nine-month periods ending September 30, 2013 include approximately $13 million of revenue and $0 million of net operating income related to acquisitions made in 2013.

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8.     Dispositions

Summarized Statements of Income data for discontinued operations is as follows:

	Three Months Ended September 30,					Nine Months Ended September 30,
(In millions of dollars, except per share figures)	2013			2012		2013			2012
Income (loss) from discontinued operations, net of tax	$	—		$	1	$	—		$	(1	)
Disposals of discontinued operations	—			—		(5		)	—
Income tax expense (credit)	1			—		(11		)	—
Disposals of discontinued operations, net of tax	(1		)	—		6			—
Discontinued operations, net of tax	$	(1	)	$	1	$	6		$	(1	)
Discontinued operations, net of tax per share
– Basic	$	—		$	—	$	0.01		$	—
– Diluted	$	—		$	0.01	$	0.01		$	—

The nine months ended September 30, 2013 includes estimated costs covered under the indemnity related to the Kroll sale and tax indemnities related to the Putnam sale.

9.    Goodwill and Other Intangibles

The Company is required to assess goodwill and any indefinite-lived intangible assets for impairment annually, or more frequently if circumstances indicate impairment may have occurred. The Company performs the annual impairment test for each of its reporting units during the third quarter of each year. In 2013, the Company elected to not use the option to perform a qualitative assessment to determine if a step 1 impairment test was necessary and instead elected to perform a step 1 impairment test. Fair values of the reporting units are estimated using either a market approach or a discounted cash flow model. This fair value determination was categorized as Level 3 in the fair value hierarchy. Carrying values for the reporting units are based on balances at the prior quarter end and include directly identified assets and liabilities as well as an allocation of those assets and liabilities not recorded at the reporting unit level. The Company completed its 2013 annual review in the third quarter and concluded goodwill was not impaired, as the fair value of each reporting unit exceeded its carrying value by a substantial margin.

Other intangible assets that are not deemed to have an indefinite life are amortized over their estimated lives and reviewed for impairment upon the occurrence of certain triggering events in accordance with applicable accounting literature.

Changes in the carrying amount of goodwill are as follows:

September 30,
(In millions of dollars)	2013			2012
Balance as of January 1, as reported	$	6,792		$	6,562
Goodwill acquired	93			126
Other adjustments(a)	(20		)	(9		)
Balance at September 30,	$	6,865		$	6,679

^(a)  Primarily reflects the impact of foreign exchange in each period.

Goodwill allocable to the Company’s reportable segments is as follows: Risk & Insurance Services, $4.7 billion and Consulting, $2.2 billion.

Amortized intangible assets consist of the cost of client lists, client relationships and trade names acquired. The gross cost and accumulated amortization are as follows:

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	September 30, 2013						December 31, 2012
(In millions of dollars)	Gross Cost		Accumulated Amortization		Net Carrying Amount		Gross Cost		Accumulated Amortization		Net Carrying Amount
Amortized intangibles	$	887	$	399	$	488	$	814	$	345	$	469

The Company recorded an intangible asset impairment charge of $5 million and $8 million in the third quarter of 2013 and 2012, respectively, in the Risk & Insurance Services segment.

Aggregate amortization expense for both nine months ended September 30, 2013 and 2012 was $53 million and the estimated future aggregate amortization expense is as follows:

For the Years Ending December 31,
(In millions of dollars)	Estimated Expense
2013 (excludes amortization through September 30, 2013)	$	18
2014	71
2015	69
2016	61
2017	51
Subsequent years	218
	$	488

10.     Fair Value Measurements

Fair Value Hierarchy

The Company has categorized its assets and liabilities that are valued at fair value on a recurring basis into a three-level fair value hierarchy as defined by the FASB. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets and liabilities (Level 1) and lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy, for disclosure purposes, is determined based on the lowest level input that is significant to the fair value measurement.

Assets and liabilities recorded in the consolidated balance sheets at fair value are categorized based on the inputs in the valuation techniques as follows:

Level 1. Assets and liabilities whose values are based on unadjusted quoted prices for identical assets or liabilities in an active market (examples include active exchange-traded equity securities, most U.S. Government and agency securities, money market mutual funds and certain other sovereign government obligations).

Level 2. Assets and liabilities whose values are based on the following:

a) Quoted prices for similar assets or liabilities in active markets;

b) Quoted prices for identical or similar assets or liabilities in non-active markets (examples include corporate and municipal bonds, which trade infrequently);

c) Pricing models whose inputs are observable for substantially the full term of the asset or liability (examples include most over-the-counter derivatives, including interest rate and currency swaps); and

d) Pricing models whose inputs are derived principally from or corroborated by observable market data through correlation or other means for substantially the full asset or liability (for example, certain mortgage loans).

Level 3. Assets and liabilities whose values are based on prices, or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. These inputs

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reflect management’s own assumptions about the assumptions a market participant would use in pricing the asset or liability (examples include private equity investments, certain commercial mortgage whole loans, and long-dated or complex derivatives including certain foreign exchange options and long-dated options on gas and power).

Valuation Techniques

Mutual Funds and Money Market Funds - Level 1

Investments for which market quotations are readily available are valued at the sale price on their principal exchange, or official closing bid price for certain markets. If no sales are reported, the security is valued at its last reported bid price.

U.S. Municipal Bonds - Level 2

These investments are valued on the basis of valuations furnished by an independent pricing service. Such services or dealers determine valuations for normal institutional-size trading units of such securities using methods based on market transactions for comparable securities and various relationships, generally recognized by institutional traders, between securities.

Interest Rate Swap Derivative - Level 2

The fair value of interest rate swap derivatives is based on the present value of future cash flows at each valuation date resulting from utilization of the swaps, using a constant discount rate of 1.6% compared to discount rates based on projected future yield curves (See Note 12).

Senior Notes due 2014 - Level 2

The fair value of the first $250 million of Senior Notes maturing in 2014 is estimated to be the amortized cost of those notes adjusted by the fair value of the interest rate swap derivative, discussed above. In the first quarter of 2011, the Company entered into two interest rate swaps that effectively convert interest on a portion of its Senior Notes from a fixed rate to a floating rate. The swaps are designated as fair value hedging instruments. The change in the fair value of the swaps is recorded on the balance sheet. The carrying value of the debt related to these swaps is adjusted by an equal amount (See Note 12).

Contingent Consideration Liability - Level 3

Purchase consideration for some acquisitions made by the Company includes contingent consideration arrangements. Contingent consideration arrangements are primarily based on achieving EBITDA and revenue targets over two to four years. The fair value of contingent consideration is estimated as the present value of future cash flows that would result from the projected revenue and earnings of the acquired entities.

The following fair value hierarchy table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2013 and December 31, 2012.

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	Identical Assets (Level 1)				Observable Inputs (Level 2)				Unobservable Inputs (Level 3)				Total
(In millions of dollars)	09/30/13		12/31/12		09/30/13		12/31/12		09/30/13		12/31/12		09/30/13		12/31/12
Assets:
Financial instruments owned:
Mutual funds(a)	$	146	$	139	$	—	$	—	$	—	$	—	$	146	$	139
Money market funds(b)	23		483		—		—		—		—		23		483
Interest rate swap derivatives(c)	—		—		3		6		—		—		3		6
Total assets measured at fair value	$	169	$	622	$	3	$	6	$	—	$	—	$	172	$	628
Fiduciary Assets:
U.S. Municipal Bonds	$	—	$	—	$	—	$	3	$	—	$	—	$	—	$	3
Money market funds	4		149		—		—		—		—		4		149
Total fiduciary assets measured at fair value	$	4	$	149	$	—	$	3	$	—	$	—	$	4	$	152
Liabilities:
Contingent consideration liability(d)	$	—	$	—	$	—	$	—	$	92	$	63	$	92	$	63
Senior Notes due 2014(e)	—		—		253		256		—		—		253		256
Total liabilities measured at fair value	$	—	$	—	$	253	$	256	$	92	$	63	$	345	$	319

^(a)  Included in other assets in the consolidated balance sheets.

^(b)  Included in cash and cash equivalents in the consolidated balance sheets.

^(c)  Included in other receivables in the consolidated balance sheets.

^(d)  Included in accounts payable and accrued liabilities and other liabilities in the consolidated balance sheets.

^(e)  Included in long term debt in the consolidated balance sheets.

During the nine-month period ended September 30, 2013, there were no assets or liabilities that transferred between Level 1 and Level 2 or between Level 2 and Level 3.

The table below sets forth a summary of the changes in fair value of the Company’s Level 3 liabilities as of September 30, 2013 and 2012 that represent contingent consideration related to acquisitions:

(In millions of dollars)	2013			2012
Balance at January 1,	$	63		$	110
Additions	21			19
Payments	(8		)	(20		)
Revaluation Impact	16			(32		)
Balance at September 30,	$	92		$	77

The fair value of the contingent liability is based on projections of revenue and earnings for the acquired entities that are reassessed on a quarterly basis. As set forth in the table above, based on the Company's ongoing assessment of the fair value of contingent consideration, the Company recorded a net increase in the estimated fair value of such liabilities for prior period acquisitions of $16 million in the nine-month period ended September 30, 2013. A 5% increase in the above mentioned projections would increase the liability by approximately $15 million. A 5% decrease in the above mentioned projections would decrease the liability by approximately $13 million.

Fair Value of Long-term Investments

The Company has certain long-term investments, primarily related to investments in non-publicly traded private equity funds of $12 million and $16 million at September 30, 2013 and December 31, 2012 carried on the cost basis for which there are no readily available market prices. The carrying values of these investments approximates their fair value. Management's estimate of the fair value of these non-publicly traded investments is based on valuation methodologies including estimates from private equity managers of the fair value of underlying investments in private equity funds. The ability to accurately predict future cash flows, revenue or earnings may impact the

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determination of fair value. The Company monitors these investments for impairment and makes appropriate reductions in carrying values when necessary. If carried at fair value, these investments would be classified as Level 3 in the fair value hierarchy and are included in Other assets in the consolidated balance sheets.

11.    Retirement Benefits

The Company maintains qualified and non-qualified defined benefit pension plans for its U.S. and non-U.S. eligible employees. The Company’s policy for funding its tax qualified defined benefit retirement plans is to contribute amounts at least sufficient to meet the funding requirements set forth by U.S. law and the laws of the non-U.S. jurisdictions in which the Company offers defined benefit plans.

The target asset allocation for the U.S. Plan is 58% equities and equity alternatives and 42% fixed income. As of September 30, 2013, the actual allocation for the U.S. Plan was 62% equities and equity alternatives and 38% fixed income. The target asset allocation for the U.K. Plans, which comprises approximately 83% of non-U.S. Plan assets, is 53% equities and equity alternatives and 47% fixed income. As of September 30, 2013, the actual allocation for the U.K. Plan was 50% equities and equity alternatives and 50% fixed income. The assets of the Company's defined benefit plans are diversified and are managed in accordance with applicable laws and with the goal of maximizing the plans' real return within acceptable risk parameters. The Company uses threshold-based portfolio re-balancing to ensure the actual portfolio remains consistent with target asset allocation ranges.

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The components of the net periodic benefit cost for defined benefit and other post-retirement plans are as follows:

Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	63		$	59		$	2	$	1
Interest cost	144			148			2		3
Expected return on plan assets	(227		)	(225		)	—		—
Amortization of prior service credit	(5		)	(4		)	—		(3		)
Recognized actuarial loss	79			67			—		—
Net periodic benefit cost	$	54		$	45		$	4	$	1
Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	188		$	180		$	4	$	3
Interest cost	433			445			8		9
Expected return on plan assets	(680		)	(676		)	—		—
Amortization of prior service credit	(16		)	(14		)	—		(9		)
Recognized actuarial loss	237			201			1		—
Net periodic benefit cost	$	162		$	136		$	13	$	3
U.S. Plans only	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	26		$	23		$	1	$	1
Interest cost	57			57			1		2
Expected return on plan assets	(81		)	(80		)	—		—
Amortization of prior service credit	(4		)	(4		)	—		(3		)
Recognized actuarial loss	52			38			—		—
Net periodic benefit cost	$	50		$	34		$	2	$	—

U.S. Plans only	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	78		$	70		$	2	$	2
Interest cost	171			172			5		6
Expected return on plan assets	(243		)	(241		)	—		—
Amortization of prior service credit	(12		)	(12		)	—		(9		)
Recognized actuarial loss (gain)	156			114			—		(1		)
Net periodic benefit cost (credit)	$	150		$	103		$	7	$	(2	)

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Significant non-U.S. Plans only	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	37		$	36		$	1	$	—
Interest cost	87			91			1		1
Expected return on plan assets	(146		)	(145		)	—		—
Amortization of prior service credit	(1		)	—			—		—
Recognized actuarial loss	27			29			—		—
Net periodic benefit cost	$	4		$	11		$	2	$	1

Significant non-U.S. Plans only	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	110		$	110		$	2	$	1
Interest cost	262			273			3		3
Expected return on plan assets	(437		)	(435		)	—		—
Amortization of prior service cost	(4		)	(2		)	—		—
Recognized actuarial loss	81			87			1		1
Net periodic benefit cost	$	12		$	33		$	6	$	5

The weighted average actuarial assumptions utilized to calculate the net periodic benefit costs for the U.S. and significant non-U.S. defined benefit plans are as follows:

Combined U.S. and significant non-U.S. Plans	Pension Benefits				Postretirement Benefits
September 30,	2013		2012		2013		2012
Weighted average assumptions:
Expected return on plan assets	7.66	%	8.04	%	—	%	—	%
Discount rate	4.38	%	4.91	%	4.32	%	5.05	%
Rate of compensation increase	2.43	%	3.09	%	—	%	—	%

The Company made approximately $552 million of contributions to its U.S. and non-U.S. defined benefit plans in the first nine months of 2013, including $250 million to its U.K. pension plans to pre-fund all or a substantial portion of any deficit funding contributions that may be required from 2014 through 2016 as a result of negotiations with the Trustee of its U.K. pension plans. The Company also made discretionary contributions of $70 million to its Canadian pension plans. The Company expects to contribute approximately $102 million to its non-qualified U.S. pension and non-U.S. pension plans during the remainder of 2013.

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12.    Debt

The Company’s outstanding debt is as follows:

(In millions of dollars)	September 30, 2013		December 31, 2012
Short-term:
Current portion of long-term debt	$	583	$	260
Long-term:
Senior notes – 4.850% due 2013	—		250
Senior notes – 5.875% due 2033	297		296
Senior notes – 5.375% due 2014	323		326
Senior notes – 5.75% due 2015	479		479
Senior notes – 2.30% due 2017	249		249
Senior notes – 9.25% due 2019	399		398
Senior notes – 4.80% due 2021	497		497
Senior notes – 2.55% due 2018	248		—
Senior notes – 4.05% due 2023	247		—
Mortgage – 5.70% due 2035	415		422
Term Loan Facility - due 2016	50		—
Other	2		1
	3,206		2,918
Less current portion	583		260
	$	2,623	$	2,658

The senior notes in the table above are publicly registered by the Company with no guarantees attached.

In September 2013, the Company issued $250 million of 2.55%five-year senior notes and $250 million of 4.05%ten-year senior notes. The net proceeds of this offering will be used for general corporate purposes, which includes a partial redemption of $250 million of the outstanding principal amount of the existing 5.75% senior notes due 2015. The redemption settled in October 2013 with a total cash outflow of approximately $275 million including a $24 million charge for early redemption.

In February 2013, the Company repaid its 4.850% fixed rate $250 million senior notes that matured using cash.

During the first quarter of 2012, the Company repaid its 6.25% fixed rate $250 million senior notes that matured. The Company used proceeds from the issuance of 2.3%five-year $250 million senior notes in the first quarter of 2012 to fund the maturing notes.

The Company and certain of its foreign subsidiaries maintain a $1.0 billion multi-currency unsecured revolving credit facility which expires in October 2016. The interest rate on this facility is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. This facility requires the Company to maintain certain coverage and leverage ratios which are tested quarterly. There were no borrowings outstanding under this facility at September 30, 2013.

In December 2012, the Company closed on a $50 million, three-year term loan facility. The interest rate on this facility at September 30, 2013 was 1.43%, which is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. The facility requires the Company to maintain coverage ratios and leverage ratios consistent with the revolving credit facility discussed above. The Company had $50 million of borrowings under this facility at September 30, 2013.

Derivative Financial Instruments

In February 2011, the Company entered into two$125 million3.5-year interest rate swaps to hedge changes in the fair value of the first $250 million of the outstanding 5.375% senior notes due in 2014.

Under the terms of the swaps, the counter-parties pay the Company a fixed rate of 5.375% and the Company pays interest at a floating rate of three-month LIBOR plus a fixed spread of 3.726%. The maturity date of the senior notes

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and the swaps match exactly. The floating rate resets quarterly, with every second reset occurring on the interest payment date of the senior notes. The swaps net settle every six months on the senior note coupon payment dates. The swaps are designated as fair value hedging instruments, and in accordance with applicable accounting guidance, are deemed to be perfectly effective. The fair value of the swaps at inception was zero and subsequent changes in the fair value of the interest rate swaps are reflected in the carrying value of the interest rate swaps and in the consolidated balance sheet. The carrying value of the debt on the balance sheet was adjusted by an equal amount. The gain or (loss) on the hedged item (fixed rate debt) and the offsetting gain or (loss) on the interest rate swaps for the year-to-date periods ended September 30, 2013 and 2012 are as follows:

	2013							2012
Income statement classification                (In millions of dollars)	Loss on Swaps			Gain on Notes		Net Income Effect		Loss on Swaps			Gain on Notes		Net Income Effect
Other Operating Expenses	$	(3	)	$	3	$	—	$	(1	)	$	1	$	—

The amounts earned and owed under the swap agreements are accrued each period and are reported in interest expense. There was no ineffectiveness recognized in the periods presented.

Fair Value of Short-term and Long-term Debt

The estimated fair value of the Company’s significant financial instruments is provided below. Certain estimates and judgments were required to develop the fair value amounts. The fair value amounts shown below are not necessarily indicative of the amounts that the Company would realize upon disposition, nor do they indicate the Company’s intent or need to dispose of the financial instrument.

	September 30, 2013				December 31, 2012
(In millions of dollars)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Short-term debt	$	583	$	614	$	260	$	261
Long-term debt	$	2,623	$	2,828	$	2,658	$	2,986

The estimated fair value of the Company’s short and long-term debt is primarily based on discounted future cash flows using current interest rates available for debt with similar terms and remaining maturities. Short and long-term debt would be classified as Level 2 in the fair value hierarchy.

13.    Restructuring Costs

The Company recorded total restructuring costs of $17 million in the first nine months of 2013, related to severance and future rent under non-cancelable leases. These costs were incurred as follows: Risk and Insurance Services -$5 million, Consulting - $1 million and Corporate - $11 million.

Details of the activity from January 1, 2012 through September 30, 2013 regarding restructuring activities, which includes liabilities from actions prior to 2013, are as follows:

(In millions of dollars)	Liability at 1/1/12		Amounts Accrued		Cash Paid			Other			Liability at 12/31/12		Amounts Accrued		Cash Paid			Other			Liability at 9/30/13
Severance	$	27	$	46	$	(38	)	$	1		$	36	$	8	$	(30	)	$	(2	)	$	12
Future rent under non-cancelable leases and other costs	154		32		(50		)	(2		)	134		9		(28		)	3			118
Total	$	181	$	78	$	(88	)	$	(1	)	$	170	$	17	$	(58	)	$	1		$	130

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The expenses associated with the above initiatives are included in compensation and benefits and other operating expenses in the consolidated statements of income. The liabilities associated with these initiatives are classified on the consolidated balance sheets as accounts payable, other liabilities, or accrued compensation, depending on the nature of the items.

14.    Common Stock

During the first nine months of 2013, the Company repurchased 10 million shares of its common stock for consideration of $400 million. In May 2013, the Board of Directors of the Company authorized share repurchases of up to $1 billion of the Company's common stock. The Company remains authorized to purchase additional shares of its common stock up to a value of $712 million. There is no time limit on the authorization. During the first nine months of 2012, the Company repurchased 5.4 million shares of its common stock for consideration of $180 million.

15.    Claims, Lawsuits and Other Contingencies

Errors and Omissions Claims

The Company and its subsidiaries, particularly Marsh and Mercer, are subject to a significant number of claims, lawsuits and proceedings in the ordinary course of business. Such claims and lawsuits consist principally of alleged errors and omissions in connection with the performance of professional services, including the placement of insurance, the provision of actuarial services for corporate and public sector clients, and the provision of consulting services relating to the drafting and interpretation of trust deeds and other documentation governing pension plans. Certain of these claims, particularly in the U.S. and the U.K., seek damages, including punitive and treble damages, in amounts that could, if awarded, be significant. In establishing liabilities for errors and omissions claims in accordance with FASB ASC Subtopic No. 450-20 (Contingencies-Loss Contingencies), the Company utilizes case level reviews by inside and outside counsel and an internal actuarial analysis to estimate potential losses. A liability is established when a loss is both probable and reasonably estimable. The liability is reviewed quarterly and adjusted as developments warrant. In many cases, the Company has not recorded a liability, other than for legal fees to defend the claim, because we are unable, at the present time, to make a determination that a loss is both probable and reasonably estimable.

To the extent that expected losses exceed our deductible in any policy year, the Company also records an asset for the amount that we expect to recover under any available third-party insurance programs. The Company has varying levels of third-party insurance coverage, with policy limits and coverage terms varying significantly by policy year.

Governmental Inquiries and Related Claims

In January 2005, the Company and its subsidiary Marsh Inc. entered into a settlement agreement with the New York State Attorney General (“NYAG”) and the New York State Insurance Department to settle a civil complaint and related citation regarding Marsh's use of market service agreements with various insurance companies. The parties subsequently entered into an amended and restated settlement agreement in February 2010 that restored a level playing field for Marsh.

Numerous private party lawsuits based on similar allegations to those made in the NYAG complaint were commenced against the Company, one or more of its subsidiaries, and their current and former directors and officers. The vast majority of these matters have been resolved. Two actions instituted by policyholders against the Company, Marsh and certain Marsh subsidiaries remain pending.

Our activities are regulated under the laws of the United States and its various states, the European Union and its member states, and the other jurisdictions in which the Company operates. In the ordinary course of business the Company is also subject to subpoenas, investigations, lawsuits and/or other regulatory actions undertaken by governmental authorities. In this regard, Mercer recently received a subpoena from the New York Department of Financial Services in connection with a review of New York’s public pension funds.

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Other Contingencies-Guarantees

In connection with its acquisition of U.K.-based Sedgwick Group in 1998, the Company acquired several insurance underwriting businesses that were already in run-off, including River Thames Insurance Company Limited (“River Thames”), which the Company sold in 2001. Sedgwick guaranteed payment of claims on certain policies underwritten through the Institute of London Underwriters (the “ILU”) by River Thames. The policies covered by this guarantee are reinsured up to £40 million by a related party of River Thames. Payment of claims under the reinsurance agreement is collateralized by segregated assets held in a trust. As of September 30, 2013, the reinsurance coverage exceeded the best estimate of the projected liability of the policies covered by the guarantee. To the extent River Thames or the reinsurer is unable to meet its obligations under those policies, a claimant may seek to recover from us under the guarantee.

From 1980 to 1983, the Company owned indirectly the English & American Insurance Company (“E&A”), which was a member of the ILU. The ILU required the Company to guarantee a portion of E&A's obligations. After E&A became insolvent in 1993, the ILU agreed to discharge the guarantee in exchange for the Company's agreement to post an evergreen letter of credit that is available to pay claims by policyholders on certain E&A policies issued through the ILU and incepting between July 3, 1980 and October 6, 1983. Certain claims have been paid under the letter of credit and we anticipate that additional claimants may seek to recover against the letter of credit.

Kroll-related Matters

Under the terms of a stock purchase agreement with Altegrity, Inc. (“Altegrity”) related to Altegrity's purchase of Kroll from the Company in August 2010, a copy of which is attached as an exhibit to the Company's Quarterly Report on Form 10-Q for the period ended June 30, 2010, the Company agreed to provide a limited indemnity to Altegrity with respect to certain Kroll-related litigation and regulatory matters.

**********

The pending proceedings and other matters described in this Note 15 on Claims, Lawsuits and Other Contingencies may expose the Company or its subsidiaries to liability for significant monetary damages and other forms of relief. Where a loss is both probable and reasonably estimable, the Company establishes liabilities in accordance with FASB ASC Subtopic No. 450-20 (Contingencies-Loss Contingencies). Except as described above, the Company is not able at this time to provide a reasonable estimate of the range of possible loss attributable to these matters or the impact they may have on the Company's consolidated results of operations, financial position or cash flows. This is primarily because these matters are still developing and involve complex issues subject to inherent uncertainty. Adverse determinations in one or more of these matters could have a material impact on the Company's consolidated results of operations, financial condition or cash flows in a future period.

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16.    Segment Information

The Company is organized based on the types of services provided. Under this organizational structure, the Company’s business segments are:

▪ Risk and Insurance Services, comprising insurance services (Marsh) and reinsurance services (Guy Carpenter); and

▪ Consulting, comprising Mercer and Oliver Wyman Group

The accounting policies of the segments are the same as those used for the consolidated financial statements described in Note 1 to the Company’s 2012 10-K. Segment performance is evaluated based on segment operating income, which includes directly related expenses, and charges or credits related to integration and restructuring but not the Company’s corporate-level expenses. Revenues are attributed to geographic areas on the basis of where the services are performed.

Effective January 1, 2013, the Corporate Benefits and Association businesses, previously part of Marsh's U.S. Consumer operations, were transferred to Mercer. The segment data presented below reflects the reclassification of prior year segment data to conform with the current year presentations.

Selected information about the Company’s operating segments for the three-and nine-month periods ended September 30, 2013 and 2012 are as follows:

	Three Months Ended September 30,							Nine Months Ended September 30,
(In millions of dollars)	Revenue				Operating Income (Loss)			Revenue				Operating Income (Loss)
2013 –
Risk and Insurance Services	$	1,504		(a)	$	222		$	4,963		(c)	$	1,111
Consulting	1,437			(b)	232			4,209			(d)	624
Total Operating Segments	2,941				454			9,172				1,735
Corporate / Eliminations	(9		)		(50		)	(26		)		(147		)
Total Consolidated	$	2,932			$	404		$	9,146			$	1,588
2012–
Risk and Insurance Services	$	1,451		(a)	$	222		$	4,781		(c)	$	1,024
Consulting	1,405			(b)	205			4,174			(d)	552
Total Operating Segments	2,856				427			8,955				1,576
Corporate / Eliminations	(11		)		(49		)	(33		)		(153		)
Total Consolidated	$	2,845			$	378		$	8,922			$	1,423

^(a)  Includes inter-segment revenue of $1 million in both 2013 and 2012, interest income on fiduciary funds of $7 million and $10 million in 2013 and 2012, respectively, and equity method income of $2 million in 2013.

^(b)  Includes inter-segment revenue of $8 million and $10 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $1 million in both 2013 and 2012.

^(c)  Includes inter-segment revenue of $4 million in both 2013 and 2012, interest income on fiduciary funds of $21 million and $31 million in 2013 and 2012, respectively, and equity method income of $10 million in both 2013 and 2012.

^(d)  Includes inter-segment revenue of $22 million and $29 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2013 and 2012, respectively.

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Details of operating segment revenue for the three and nine-month periods ended September 30, 2013 and 2012 are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(In millions of dollars)	2013			2012			2013			2012
Risk and Insurance Services
Marsh	$	1,241		$	1,201		$	4,038		$	3,895
Guy Carpenter	263			250			925			886
Total Risk and Insurance Services	1,504			1,451			4,963			4,781
Consulting
Mercer	1,072			1,054			3,157			3,086
Oliver Wyman Group	365			351			1,052			1,088
Total Consulting	1,437			1,405			4,209			4,174
Total Operating Segments	2,941			2,856			9,172			8,955
Corporate/ Eliminations	(9		)	(11		)	(26		)	(33		)
Total	$	2,932		$	2,845		$	9,146		$	8,922

The following reflects the impact of the transfer discussed above on prior year's segment information:

	Three Months Ended September 30, 2012									Nine Months Ended September 30, 2012
(In millions of dollars)	As Reported			Reclassification			Current Presentation			As Reported			Reclassification			Current Presentation
Revenue
Risk and Insurance Services
Marsh	$	1,260		$	(59	)	$	1,201		$	4,069		$	(174	)	$	3,895
Guy Carpenter	250			—			250			886			—			886
Total Risk and Insurance Services	1,510			(59		)	1,451			4,955			(174		)	4,781
Consulting
Mercer	995			59			1,054			2,912			174			3,086
Oliver Wyman Group	351			—			351			1,088			—			1,088
Total Consulting	1,346			59			1,405			4,000			174			4,174
Total Operating Segments	2,856			—			2,856			8,955			—			8,955
Corporate Eliminations	(11		)	—			(11		)	(33		)	—			(33		)
Total Revenue	$	2,845		$	—		$	2,845		$	8,922		$	—		$	8,922
Operating Income
Risk and Insurance Services	$	234		$	(12	)	$	222		$	1,052		$	(28	)	$	1,024
Consulting	193			12			205			524			28			552
Total Operating Segments	427			—			427			1,576			—			1,576
Corporate Eliminations	(49		)	—			(49		)	(153		)	—			(153		)
Total Consolidated	$	378		$	—		$	378		$	1,423		$	—		$	1,423

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17.    New Accounting Guidance

In July 2013 the FASB issued new accounting guidance related to the presentation of unrecognized tax benefits as a reduction to a deferred tax asset for a net operating loss carry-forward, a similar tax loss, or a tax credit carry-forward. However, to the extent a net operating loss carry-forward, a similar tax loss, or a tax credit carry-forward is not available at the reporting date under the tax law of the applicable jurisdiction, the unrecognized tax benefit shall be presented in the financial statement as a liability and shall not be combined with deferred tax assets. The guidance is effective for fiscal years beginning after December 15, 2013. The adoption of this new guidance will affect balance sheet classification and footnote disclosure only and is not expected to have a material impact on the Company's financial statements.

In February 2013 the FASB issued new accounting guidance that adds new disclosure requirements for items reclassified out of accumulated other comprehensive income. The Company implemented this new guidance for the reporting period ended March 31, 2013. Other than enhanced disclosure, the adoption of this new guidance did not have a material effect on the Company's financial statements.

In the first quarter of 2012, the Company adopted new accounting guidance related to the presentation of Comprehensive Income. The new guidance gives an entity the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In both choices, an entity is required to present each component of net income along with total net income, each component of other comprehensive income along with a total for other comprehensive income, and a total amount for comprehensive income. The guidance eliminates the option to present the components of other comprehensive income as part of the statement of changes in stockholders’ equity. The guidance did not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. Other than enhanced disclosure, adoption of this new guidance did not have a material effect on the Company's financial statements.

In January 2012, the Company adopted guidance issued by the FASB on accounting and disclosure requirements related to fair value measurements. The guidance expands the disclosures on Level 3 inputs by requiring quantitative disclosure of the unobservable inputs and assumptions, as well as description of the valuation processes, the sensitivity of the fair value to changes in unobservable inputs and the hierarchy classification, valuation techniques, and inputs for assets and liabilities whose fair value is only disclosed in the footnotes.

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Item 2.     Management’s Discussion and Analysis of Financial Condition and Results of Operations

General

Marsh & McLennan Companies, Inc. and Subsidiaries (“the Company”) is a global professional services firm providing advice and solutions principally in the areas of risk, strategy, and human capital. It is the parent company of a number of the world's leading risk experts and specialty consultants, including: Marsh, the insurance broker, intermediary and risk advisor; Guy Carpenter, the risk and reinsurance specialist; Mercer, the provider of HR and related financial advice and services; and Oliver Wyman Group, the management, economic and brand consultancy. With approximately 54,000 employees worldwide and annual revenue of nearly $12 billion, the Company provides analysis, advice and transactional capabilities to clients in over 100 countries.

The Company conducts business through two segments:

• Risk and Insurance Services includes risk management activities (risk advice, risk transfer and risk control and mitigation solutions) as well as insurance and reinsurance broking and services. We conduct business in this segment through Marsh and Guy Carpenter.

• Consulting includes Health, Retirement, Talent and Investments consulting and services, and specialized management and economic consulting services. We conduct business in this segment through Mercer and Oliver Wyman Group.

Effective January 1, 2013, the Corporate Benefits and Association businesses, previously part of Marsh's U.S. Consumer operations, were transferred to Mercer. Also, effective January 1, 2013, Mercer realigned management responsibility for its outsourcing business within its other lines of business. Accordingly, the Company has reclassified prior year segment data and related disclosures contained in this management's discussion and analysis to conform with current year presentation.

The Company completed six acquisitions during the first nine months of 2013.

In September 2013, Marsh purchased an additional stake in Insia a.s., an insurance broker operating in the Czech Republic and Slovakia which, when combined with its prior holdings, gave MMC a controlling interest. Insia a.s. was previously accounted for under the equity method. In August 2013, Mercer acquired Global Remuneration Solutions, a market leading compensation consulting firm based in South Africa. In July 2013, Oliver Wyman acquired Corven, a U.K.-based management consultancy firm and Guy Carpenter acquired Smith Group, a specialist disability reinsurance risk manager and consultant based in Maine. In June 2013, Marsh acquired Rehder y Asociados Group, a leading insurance adviser in Peru. The business includes the insurance broker Rehder y Asociados and employee health and benefits specialist, Humanasalud. Marsh also completed the acquisition of Franco & Acra Tecniseguros, an insurance advisor in the Dominican Republic in June 2013.

A reconciliation of segment operating income to total operating income is included in Note 16 to the consolidated financial statements included in Part II Item 8 in this report. The accounting policies used for each segment are the same as those used for the consolidated financial statements.

This Management's Discussion & Analysis ("MD&A") contains forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. See “Information Concerning Forward-Looking Statements” at the outset of this report.

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Consolidated Results of Operations

	Third Quarter					Nine Months
(In millions, except per share figures)	2013			2012		2013		2012
Revenue	$	2,932		$	2,845	$	9,146	$	8,922
Expense:
Compensation and Benefits	1,824			1,760		5,393		5,332
Other Operating Expenses	704			707		2,165		2,167
Operating Expenses	2,528			2,467		7,558		7,499
Operating Income	404			378		1,588		1,423
Income from Continuing Operations	260			246		1,072		939
Discontinued Operations, net of tax	(1		)	1		6		(1		)
Net Income Before Non-Controlling Interest	259			247		1,078		938
Net Income Attributable to the Company	$	253		$	241	$	1,054	$	917
Income From Continuing Operations Per Share:
Basic	$	0.46		$	0.44	$	1.91	$	1.68
Diluted	$	0.45		$	0.43	$	1.88	$	1.66
Net Income Per Share Attributable to the Company:
Basic	$	0.46		$	0.44	$	1.92	$	1.68
Diluted	$	0.45		$	0.44	$	1.89	$	1.66
Average Number of Shares Outstanding:
Basic	549			544		549		544
Diluted	558			552		558		552
Shares Outstanding at September 30	547			544		547		544

The Company's consolidated operating income increased 7% to $404 million in the third quarter of 2013 compared with $378 million in the prior year. This represents the effect of a 3% increase in revenue and a 2% increase in expenses compared to the same period last year. Risk and Insurance Services operating income was flat while Consulting increased $27 million or 13% compared with the same period last year.

The Company reported consolidated operating income of approximately $1.6 billion in the first nine months of 2013 compared with consolidated operating income of $1.4 billion in the prior year, reflecting increases of $87 million in Risk and Insurance Services and $72 million in Consulting.

Consolidated Revenue and Expense

The Company conducts business in many countries, as a result of which the impact of foreign exchange rate movements may impact period-to-period comparisons of revenue. Similarly, the revenue impact of acquisitions and dispositions, including transfers among businesses, may impact period-to-period comparisons of revenue. Underlying revenue, presented below, measures the change in revenue from one period to another by isolating these impacts. The impact of foreign currency exchange fluctuations and acquisitions and dispositions, including transfers among businesses, on the Company’s operating revenues by segment is as follows:

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	Three Months Ended September 30,						% Change GAAP Revenue		Components of Revenue Change*
									Currency Impact		Acquisitions/ Dispositions Impact		Underlying Revenue
(In millions of dollars)	2013			2012
Risk and Insurance Services
Marsh	$	1,235		$	1,192		4	%	(2	)%	2	%	3	%
Guy Carpenter	262			249			5	%	—		1	%	5	%
Subtotal	1,497			1,441			4	%	(2	)%	2	%	4	%
Fiduciary Interest Income	7			10
Total Risk and Insurance Services	1,504			1,451			4	%	(2	)%	2	%	3	%
Consulting
Mercer	1,072			1,054			2	%	(2	)%	(1	)%	4	%
Oliver Wyman Group	365			351			4	%	1	%	1	%	2	%
Total Consulting	1,437			1,405			2	%	(1	)%	—		4	%
Corporate/Eliminations	(9		)	(11		)
Total Revenue	$	2,932		$	2,845		3	%	(1	)%	1	%	4	%

The following table provides more detailed revenue information for certain of the components presented above:

	Three Months Ended September 30,				% Change GAAP Revenue		Components of Revenue Change*
							Currency Impact		Acquisitions/ Dispositions Impact		Underlying Revenue
(In millions of dollars)	2013		2012
Marsh:
EMEA	$	387	$	376	3	%	—		—		3	%
Asia Pacific	165		165		—		(8	)%	—		7	%
Latin America	94		81		15	%	(11	)%	11	%	15	%
Total International	646		622		4	%	(3	)%	1	%	6	%
U.S. / Canada	589		570		3	%	—		3	%	1	%
Total Marsh	$	1,235	$	1,192	4	%	(2	)%	2	%	3	%
Mercer:
Health	$	378	$	354	7	%	—		1	%	5	%
Retirement	325		334		(3	)%	(1	)%	(4	)%	2	%
Talent	179		179		—		(2	)%	—		2	%
Investments	190		187		2	%	(6	)%	—		8	%
Total Mercer	$	1,072	$	1,054	2	%	(2	)%	(1	)%	4	%

Underlying revenue measures the change in revenue using consistent currency exchange rates, excluding the impact of certain items such as: acquisitions, dispositions and transfers among businesses.
*	Components of revenue change may not add due to rounding.

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	Nine Months Ended September 30,						% Change GAAP Revenue		Components of Revenue Change*
									Currency Impact		Acquisitions/ Dispositions Impact		Underlying Revenue
(In millions of dollars)	2013			2012
Risk and Insurance Services
Marsh	$	4,020		$	3,869		4	%	(1	)%	2	%	3	%
Guy Carpenter	922			881			5	%	—		—		5	%
Subtotal	4,942			4,750			4	%	(1	)%	2	%	3	%
Fiduciary Interest Income	21			31
Total Risk and Insurance Services	4,963			4,781			4	%	(1	)%	2	%	3	%
Consulting
Mercer	3,157			3,086			2	%	(1	)%	—		4	%
Oliver Wyman Group	1,052			1,088			(3	)%	1	%	—		(3	)%
Total Consulting	4,209			4,174			1	%	(1	)%	—		2	%
Corporate/Eliminations	(26		)	(33		)
Total Revenue	$	9,146		$	8,922		3	%	(1	)%	1	%	3	%

The following table provides more detailed revenue information for certain of the components presented above:

	Nine Months Ended September 30,				% Change GAAP Revenue		Components of Revenue Change*
							Currency Impact		Acquisitions/ Dispositions Impact		Underlying Revenue
(In millions of dollars)	2013		2012
Marsh:
EMEA	$	1,436	$	1,408	2	%	—		—		3	%
Asia Pacific	496		488		2	%	(4	)%	—		6	%
Latin America	260		242		7	%	(9	)%	4	%	13	%
Total International	2,192		2,138		3	%	(2	)%	—		4	%
U.S. / Canada	1,828		1,731		6	%	—		4	%	2	%
Total Marsh	$	4,020	$	3,869	4	%	(1	)%	2	%	3	%
Mercer:
Health	$	1,135	$	1,058	7	%	—		1	%	6	%
Retirement	1,006		1,044		(4	)%	(1	)%	(4	)%	1	%
Talent	435		436		—		(2	)%	2	%	(1	)%
Investments	581		548		6	%	(3	)%	—		9	%
Total Mercer	$	3,157	$	3,086	2	%	(1	)%	—		4	%

Underlying revenue measures the change in revenue using consistent currency exchange rates, excluding the impact of certain items such as: acquisitions, dispositions and transfers among businesses.
*	Components of revenue change may not add due to rounding.

Revenue

Consolidated revenue for the third quarter of 2013 was $2.9 billion, an increase of 3% or 4% on an underlying basis from the third quarter of 2012.

Revenue in the Risk and Insurance Services segment for the third quarter of 2013 was $1.5 billion, an increase of 4% from the same period last year, or 3% on an underlying basis. Marsh produced underlying revenue growth

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across all major geographies. Guy Carpenter's revenue increased 5% on both a reported basis and an underlying basis reflecting growth in both U.S. and international operations. On an underlying basis, Consulting revenue increased 4%, reflecting increases of 4% in Mercer and 2% in Oliver Wyman.

For the first nine months of 2013, Risk & Insurance Services revenue increased 4% from the same period in 2012, and 3% on an underlying basis. Consulting revenue increased 1% compared with the same period last year. On an underlying basis, Consulting revenue increased 2%, reflecting a 4% increase at Mercer offset by a 3% decrease at Oliver Wyman.

Operating Expense

Consolidated operating expense in the third quarter increased 2% as compared to the same period last year or 3% on an underlying basis. The increase on an underlying basis is primarily due to higher incentive compensation, severance and pension costs partly offset by lower costs related to professional indemnity claims. For the nine months ended September 30, 2013, expense increased 1% on both a reported and underlying basis.

Risk and Insurance Services

The results of operations for the Risk and Insurance Services segment are presented below:

	Third Quarter						Nine Months
(In millions of dollars)	2013			2012			2013			2012
Revenue	$	1,504		$	1,451		$	4,963		$	4,781
Compensation and Benefits	915			874			2,712			2,622
Other Expenses	367			355			1,140			1,135
Expense	1,282			1,229			3,852			3,757
Operating Income	$	222		$	222		$	1,111		$	1,024
Operating Income Margin	14.8		%	15.3		%	22.4		%	21.4		%

Revenue

Revenue in the Risk and Insurance Services segment in the third quarter of 2013 was $1.5 billion, an increase of 4% or 3% on an underlying basis compared with the same period in 2012.

In Marsh, revenue in the third quarter of 2013 was $1.2 billion, an increase of4% compared with the same quarter of the prior year, or 3% on an underlying basis. The international division grew 6% on an underlying basis, led by growth of 15% in Latin America, 7% in Asia Pacific and 3% in EMEA. Underlying revenue increased 1% in the U.S. / Canada division.

Guy Carpenter's third quarter revenue was $262 million, an increase of 5% on both a reported basis and underlying basis. The increase in underlying revenue reflects new business development and high revenue retention rates.

Revenue in the Risk & Insurance Services segment increased 4% in the first nine months of 2013 compared with 2012, or 3% on an underlying basis.

Expense

Expenses in the Risk and Insurance Services segment increased 4% in the third quarter of 2013 compared with the same period in the prior year, reflecting a 4% increase on an underlying basis, a 2% increase from acquisitions offset by a decrease of 2% for the impact of foreign exchange translation. The underlying expense increase reflects higher incentive compensation, base salary and severance related costs, offset by lower costs related to professional indemnity claims as compared to the same period last year. The expense increase also reflects the impact of credits recorded in the third quarter of 2012 related to the adjustment of acquisition-related contingent consideration liabilities compared to a charge in 2013.

Expenses for the nine month period in 2013 increased 3% compared to prior year, reflecting a 2% increase in underlying expenses, a 2% increase due to acquisitions, partly offset by a 1% decrease for the impact of foreign exchange. The increase in underlying expenses is primarily due to higher base salaries, pension costs and adjustments to acquisition-related contingent consideration liabilities, partly offset by lower costs related to professional indemnity claims.

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Consulting

The results of operations for the Consulting segment are presented below:

	Third Quarter						Nine Months
(In millions of dollars)	2013			2012			2013			2012
Revenue	$	1,437		$	1,405		$	4,209		$	4,174
Compensation and Benefits	823			804			2,425			2,454
Other Expenses	382			396			1,160			1,168
Expense	1,205			1,200			3,585			3,622
Operating Income	$	232		$	205		$	624		$	552
Operating Income Margin	16.1		%	14.6		%	14.8		%	13.2		%

Revenue

Consulting revenue in the third quarter of 2013 increased 2% or 4% on an underlying basis compared with the same period in 2012. Mercer's revenue was $1.1 billion in the third quarter of 2013, an increase of 2% or 4% on an underlying basis as compared to the same period last year. The increase in underlying revenue was driven by growth in Mercer's Health and Investments lines of business, which increased 5% and 8%, respectively, compared with the same period last year. Oliver Wyman's revenue increased 4% to $365 million in the third quarter of 2013, or 2% on an underlying basis.

Consulting revenue in the first nine months of 2013 increased 1% on a reported basis compared with the same period in 2012, or 2% on an underlying basis, with underlying growth of 4% in Mercer, offset by a decrease of 3% in Oliver Wyman.

Expense

Consulting expenses in the third quarter of 2013 increased 1% on both a reported and underlying basis compared with the same period in 2012. The underlying expense increase in the third quarter of 2013 is primarily due to higher incentive compensation costs partly offset by lower professional indemnity claims.

Expenses for the nine months of 2013 decreased 1% as compared to the same period in 2012.

Corporate and Other

The following results of Corporate and Other include the run-off of the Corporate Advisory and Restructuring ("CARG") operations:

	Third Quarter						Nine Months
(In millions of dollars)	2013			2012			2013			2012
Corporate Advisory and Restructuring Operating Income	$	1		$	2		$	1		$	5
Corporate Expense	(51		)	(51		)	(148		)	(158		)
Total Corporate and Other	$	(50	)	$	(49	)	$	(147	)	$	(153	)

Corporate expenses in the third quarter of 2013 were $51 million, which was unchanged from the prior year reflecting the impact of higher pension and performance based compensation costs offset by lower severance costs in 2013, as compared with the same period last year.

Expenses for the first nine months of 2013 decreased to $148 million from $158 million in 2012, primarily due to lower amortization of equity awards and lower severance partially offset by higher pension expense.  Prior year included accelerated amortization of equity awards for retirement eligible senior executives.

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Interest

Interest income earned on corporate funds amounted to $5 million in the third quarter of 2013 compared with $6 million in the third quarter of 2012 reflecting lower cash levels and lower interest rates. Interest expense decreased $4 million and $11 million, respectively, in 2013 compared with the third quarter and nine month periods of 2012. The decrease in interest expense is primarily due to the lower level of debt throughout most of the period.

Investment Income

The caption “Investment income” in the consolidated statements of income comprises realized and unrealized gains and losses from investments recognized in current earnings. It includes, when applicable, other than temporary declines in the value of debt and available for sale securities and the change in value of the Company's holdings in certain private equity funds, including equity method gains (losses) on its investment in the Trident funds. The Company's investments may include direct investments in insurance or consulting companies and investments in private equity funds. The Company recorded gains on its investment in Trident II of $20 million and $23 million for the nine months ended September 30, 2013 and 2012, respectively, including $15 million of deferred performance fees recognized in the first quarter of 2013 related to Trident II. Trident II has now harvested substantially all its portfolio investments and there are no remaining capital commitments for this fund. The Company has recognized substantially all of the performance fees related to its general partnership interest in Trident II. Investment income for the three and nine months ended September 30, 2013 includes performance fees of $13 million and $34 million, respectively, which had been deferred, that are no longer subject to claw back from Trident III. Trident III is a private equity fund created in 2003. No Trident III-related investment income had been recognized since 2006, when MMC contributed its limited partnership investment interest to its U.K. pension plan. The Company continues to hold a general partnership interest in Trident III. At September 30, 2013, the Company has deferred performance fees ofapproximately$43 million related to Trident III. Recognition of these deferred performance fees will only occur as investments are harvested and the performance fees are no longer subject to claw back. Timing of this is unknown and is not controlled by the Company.

Income Taxes

The Company's effective tax rate in the third quarter of 2013 was 32.1%. This rate reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation and the impact of tax rate changes on the Company's deferred tax assets and liabilities.

The Company's effective tax rate in the third quarter of 2012 was 26.8%. As above, this rate reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation. In addition, it reflects several discrete tax benefits, including the benefit from recording previously unrecognized tax benefits as a result of expiring statutes of limitations for U.S. federal tax years 2006 and 2008, and a favorable permanent difference related to a tax-free adjustment to the estimated liability for contingent consideration. Partially offsetting these benefits in the quarter were charges to increase unrecognized tax benefits for certain operations in Asia and U.S. tax costs related to actions taken during the quarter to reduce positions in the Euro currency held by certain of the Company's non-U.S. operations.

The effective tax rate for the first nine months of 2013 was 30.1% compared with 29.2% for the first nine months of 2012. The rate in both periods reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation, and the impact of discrete tax matters such as the resolution of tax examinations.

The effective tax rate is sensitive to the geographic mix and repatriation of the Company's earnings, which may result in higher or lower tax rates. U.S. federal and state corporate tax rates substantially exceed tax rates applicable in most jurisdictions outside the U.S. A significant portion of the Company's profits were earned outside the U.S. In 2013 the forecasted pre-tax income in the U.K., Canada, Australia, and France are expected to account for approximately 60% of the Company's total non-U.S. pre-tax income, with estimated effective rates in those countries of 22%, 27%, 30% and 41%, respectively. Losses in certain jurisdictions cannot be offset by earnings from other operations, and may require valuation allowances affecting the rate, depending on estimates of the realizability of associated deferred tax assets. The tax rate is also sensitive to changes in unrecognized tax benefits, including the impact of settled tax audits and expired statutes of limitation.

Changes in tax laws or tax rulings may have a significant impact on our effective tax rate. Discussions continue within Congress and the Administration about broad reform of the corporate tax system in the U.S. It is not possible

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to predict the ultimate outcome of these discussions. Future legislation could have a material impact on our effective tax rate and consolidated financial statements due to reforms that could include changes in the corporate tax rate and in the way U.S. corporations are taxed on foreign earnings.

The Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in the tax return. The Company's gross unrecognized tax benefits increased from $117 million at December 31, 2012 to $133 million at September 30, 2013. It is reasonably possible that the total amount of unrecognized tax benefits will decrease between zero and approximately $20 million within the next twelve months due to settlement of audits and expiration of statutes of limitation.

Dispositions

Summarized Statements of Income data for discontinued operations is as follows:

	Third Quarter					Nine Months
(In millions of dollars, except per share figures)	2013			2012		2013			2012
Loss from discontinued operations, net of tax	$	—		$	1	$	—		$	(1	)
Disposals of discontinued operations	—			—		(5		)	—
Income tax expense (credit)	1			—		(11		)	—
Disposals of discontinued operations, net of tax	(1		)	—		6			—
Discontinued operations, net of tax	$	(1	)	$	1	$	6		$	(1	)
Discontinued operations, net of tax per share
– Basic	$	—		$	—	$	0.01		$	—
– Diluted	$	—		$	0.01	$	0.01		$	—

The nine months ended September 30, 2013 includes estimated costs covered under the indemnity related to the Kroll sale. The nine months ended September 30, 2013 also includes tax indemnities related to the Putnam sale.

Liquidity and Capital Resources

The Company is organized as a holding company, a legal entity separate and distinct from its operating subsidiaries. As a holding company without significant operations of its own, the Company is dependent upon dividends and other payments from its operating subsidiaries to meet its obligations for paying principal and interest on outstanding debt obligations, for paying dividends to stockholders and for corporate expenses. Other sources of liquidity include borrowing facilities discussed below in financing cash flows.

The Company derives a significant portion of its revenue and operating profit from operating subsidiaries located outside of the United States. Funds from the Company’s operating subsidiaries located outside of the United States are regularly repatriated to the United States out of annual earnings. At December 31, 2012, the Company had approximately $1.3 billion of cash and cash equivalents in its foreign operations of which all but approximately $80 million is considered to be permanently invested in those operations to fund foreign investments and working capital needs. The Company expects to continue its practice of repatriating foreign funds out of current annual earnings. The analysis of the portion of 2013 earnings that the Company expects to repatriate and the portion that will be permanently reinvested will be finalized later in the year as the amount of non-U.S. earnings and the Company’s cash requirements become more certain. While management does not foresee a need to repatriate the funds which are currently deemed permanently invested, if facts or circumstances change, management could elect to repatriate them, if necessary, which could result in higher effective tax rates in the future.

Cash on the Company's consolidated balance sheets includes funds available for general corporate purposes. Funds held on behalf of clients in a fiduciary capacity are segregated and shown separately in the consolidated balance sheets as an offset to fiduciary liabilities. Fiduciary funds cannot be used for general corporate purposes, and should not be considered as a source of liquidity for the Company.

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Operating Cash Flows

The Company generated $575 million of cash from operations for the nine months ended September 30, 2013, compared with $750 million provided by operations for the same period in 2012. These amounts reflect the net income of the Company during those periods, excluding gains or losses from investments and from the disposition of businesses, adjusted for non-cash charges, and changes in working capital which relate primarily to the timing of payments of accrued liabilities or receipts of assets and pension contributions.

Pension Related Items

The Company's policy for funding its tax-qualified defined benefit plans is to contribute amounts at least sufficient to meet the funding requirements set forth in the applicable laws or regulations of the U.S. and other jurisdictions. During the first nine months of 2013, the Company contributed $532 million to its non-U.S. pension plans and $20 million to its U.S. pension plans, including contributions of $250 million to its U.K. pension plans to pre-fund all or a substantial portion of any deficit funding contributions that may be required from 2014 through 2016 as a result of negotiations with the Trustee of its U.K. pension plans. The Company also made discretionary contributions of $70 million to its Canadian plans. During the first nine months of 2012, the Company contributed $301 million to its non-U.S. plans and $118 million to its U.S. plans, including discretionary contributions of $100 million to its U.S. plans and $100 million to its non-U.S. plans.

In the U.S., contributions to the tax-qualified defined benefit plans are based on ERISA guidelines and the Company generally expects to maintain a funded status of 80% or more of the liability determined under the ERISA guidelines. The pension stabilization provisions included in the “Moving Ahead for Progress in the 21st Century Act” enacted on July 6, 2012, changed the methodology for determining the discount rate used for calculating plan liabilities under ERISA, which determines, in part, the funding requirements. Afterconsidering the impact of the pension funding stabilization provisions discussed above, the Company does not expect any contributions will be required to its U.S. tax-qualified plan through the end of 2014.

The Company has a large number of non-U.S. defined benefit pension plans, the largest of which are in the U.K., which comprise approximately 83% of non-U.S. plan assets. In the U.K., contributions to defined benefit pension plans are determined through a negotiation process between the Company and the plans' trustee that typically occurs every three years in conjunction with the valuation of the plans. This process is governed by U.K. pension regulations. The assumptions that result from the funding negotiations are different than those used for U.S. GAAP and currently result in a lower funded status than under U.S. GAAP. The current funding plan was based on assumptions (including interest rates, inflation, salary increases and mortality) that reflected market conditions as of year-end 2009, was agreed to in early 2011 and forms the basis for the Company's aggregate contributions to the U.K. plans for 2011 through 2013. The Company expects to fund an additional $97 million to its non-U.S. plans over the remainder of 2013, including approximately $63 million to the U.K. plans. For the entire year, the required contributions to the U.K. plans represent approximately two thirds of the total non-U.S. required contributions. The valuation of the U.K. pension plans at December 31, 2012 that results from the negotiation process described above will determine funding that is expected to become applicable in 2014.

Financing Cash Flows

Net cash used for financing activities was $350 million for the period ended September 30, 2013 compared with $524 million net cash used for the same period in 2012.

In September 2013, the Company issued $250 million of 2.55% five-year senior notes and $250 million of 4.05% ten-year senior notes. The net proceeds of this offering will be used for general corporate purposes, which includes a partial redemption of $250 million of the outstanding principal amount of the existing 5.75% senior notes due 2015. The redemption settled in October 2013 with a total cash outflow of approximately $275 million including a $24 million charge for early redemption.

During the first quarter of 2013, the Company used cash to repay its 4.85% fixed rate $250 million senior notes that matured.

During the first quarter of 2012, the Company repaid its 6.25% fixed rate $250 million senior notes that matured. The Company used proceeds from the issuance of 2.3% five-year $250 million senior notes to fund the maturing notes.

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The Company paid dividends on its common shares of $394 million ($0.71 per share) during the first nine months of 2013, as compared with $369 million ($0.67 per share) during the first nine months of 2012.

The Company and certain of its foreign subsidiaries maintain a $1.0 billion multi-currency unsecured revolving credit facility, which expires in October 2016. The interest rate on this facility is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. The facility requires the Company to maintain certain coverage and leverage ratios which are tested quarterly. There were no borrowings outstanding under this facility at September 30, 2013.

In December 2012, the Company closed on a $50 million, three-year term loan facility. The interest rate on this facility is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. The facility requires the Company to maintain coverage ratios and leverage ratios consistent with the revolving credit facility discussed above. The Company had $50 million of borrowings under this facility at September 30, 2013.

The Company has met all requirements for its credit facilities as of September 30, 2013.

The Company's senior debt is currently rated Baa2 by Moody's and BBB by Standard & Poor's. The Company's short-term debt is currently rated P-2 by Moody's and A-2 by Standard & Poor's. The Company carries a positive outlook from Moody's and a positive outlook from Standard & Poor's.

During the first nine months of 2013, the Company paid $8 million of contingent payments related to acquisitions made in prior periods. In the first nine months of 2012, the Company paid $20 million of contingent payments related to acquisitions made in prior periods.

During the first nine months of 2013, the Company repurchased 10 million shares of its common stock for consideration of $400 million. In May 2013, the Board of Directors of the Company authorized share repurchases of up to $1 billion of the Company's common stock. The Company remains authorized to purchase additional shares of its common stock up to a value of $712 million. During the nine months of 2012, the Company repurchased 5.4 million shares of its common stock for total consideration of $180 million.

Investing Cash Flows

Cash used for investing activities amounted to $299 million in the first nine months of 2013, compared with $369million used during the same period in 2012.

The Company made six acquisitions during the first nine months of 2013. Cash used for these acquisitions, net of cash acquired was $103 million. In addition, in the first nine months of 2013, the Company paid $4 million of deferred purchase consideration related to acquisitions made in prior years. Remaining deferred cash payments of approximately $57 million and estimated future contingent consideration payments of $92 million for acquisitions completed in the first nine months of 2013 and in prior years are recorded in accounts payable and accrued liabilities or other liabilities in the consolidated balance sheet at September 30, 2013.

The Company madeten acquisitions in the first nine months of 2012. Cash used for these acquisitions, net of cash acquired was approximately $102 million. In addition, in the first nine months of 2012, the Company paid $51 million of deferred purchase consideration related to acquisitions made in prior years.

The Company used cash of $288 million to purchase fixed assets and capitalized software in the first nine months of 2013 compared with $249 million in the first nine months of 2012, primarily related to computer equipment and software purchases, software development costs and the refurbishing and modernizing of office facilities.

The Company has commitments for potential future investments of approximately $25 million in two private equity funds that invest primarily in financial services companies.

Commitments and Obligations

The Company’s contractual obligations of the types identified in the table below were of the following amounts as of September 30, 2013 (In millions of dollars):

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	Payment due by Period
Contractual Obligations	Total		Within 1 Year		1-3 Years		4-5 Years		After 5 Years
Current portion of long-term debt	$	581	$	581	$	—	$	—	$	—
Long-term debt	2,637		—		302		274		2,061
Interest on long-term debt	1,310		174		261		238		637
Net operating leases	2,222		322		527		402		971
Service agreements	272		88		98		72		14
Other long-term obligations	188		76		102		8		2
Purchases commitments	33		18		15		—		—
Total	$	7,243	$	1,259	$	1,305	$	994	$	3,685

The above does not include unrecognized tax benefits of $133 million, accounted for under ASC Topic No. 740, as the Company is unable to reasonably predict the timing of settlement of these liabilities, other than approximately $5 million that may become payable within one year. The above does not include the indemnified liabilities discussed in Note 15 as the Company is unable to reasonably predict the timing of settlement of these liabilities. The above does not include net pension liabilities for underfunded plans of approximately $1.7 billion because the timing and amount of ultimate payment of such liability is dependent upon future events, including, but not limited to, future returns on plan assets, and changes in the discount rate used to measure the liabilities. The Company expects to contribute approximately $5 million and $97 million to its U.S. and non-U.S. pension plans, respectively, in the remainder of 2013.

New Accounting Guidance

Note 17 to the consolidated financial statements contains a discussion of recently issued accounting guidance and their impact or potential future impact on the Company’s financial results, if determinable.

Item 3. Qualitative and Quantitative Disclosures About Market Risk

Market Risk and Credit Risk

Certain of the Company’s revenues, expenses, assets and liabilities are exposed to the impact of interest rate changes and fluctuations in foreign currency exchange rates and equity markets.

Interest Rate Risk and Credit Risk

The Company has historically managed its net exposure to interest rate changes by utilizing a mixture of variable and fixed rate borrowings to finance the Company’s asset base. During 2007, virtually all of the Company’s variable rate borrowings were repaid. In February 2011, the Company entered into two 3.5-year interest rate swaps to hedge changes in the fair value of the first $250 million of its 5.375% senior notes due in 2014. Under the terms of the swaps, the counter-parties will pay the Company a fixed rate of 5.375% and the Company will pay interest at a floating rate of three-month LIBOR plus a fixed spread of 3.726%. The swaps are designated as fair value hedging instruments and are deemed to be perfectly effective in accordance with applicable accounting guidance.

Interest income generated from the Company’s cash investments as well as invested fiduciary funds will vary with the general level of interest rates.

The Company had the following investments subject to variable interest rates:

(In millions of dollars)	September 30, 2013
Cash and cash equivalents invested in money market funds, certificates of deposit and time deposits	$	2,174
Fiduciary cash and investments	$	4,657

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Based on the above balances, if short-term interest rates increased or decreased by 10%, or 8 basis points, over the course of the remainder of the year, annual interest income, including interest earned on fiduciary funds, would increase or decrease by approximately $1 million.

In addition to interest rate risk, our cash and cash equivalents and fiduciary fund investments are subject to potential loss of value due to counter-party credit risk. To minimize this risk, the Company and its subsidiaries invest pursuant to a Board-approved investment policy. The policy mandates the preservation of principal and liquidity and requires broad diversification with counter-party limits assigned based primarily on credit rating and type of investment. The Company carefully monitors its cash and fiduciary fund investments and will further restrict the portfolio as appropriate to market conditions. The majority of cash and fiduciary fund investments are invested in short-term bank deposits.

Foreign Currency Risk

The translated values of revenue and expense from the Company’s international operations are subject to fluctuations due to changes in currency exchange rates. The non-U.S. based revenue that is exposed to foreign exchange fluctuations is approximately 56% of total revenue. We periodically use forward contracts and options to limit foreign currency exchange rate exposure on net income and cash flows for specific, clearly defined transactions arising in the ordinary course of business. Although the Company has significant revenue generated in foreign locations which is subject to foreign exchange rate fluctuations, in most cases both the foreign currency revenue and expenses are in the functional currency of the foreign location. As such, the U.S. dollar translation of both the revenues and expenses, as well as the potentially offsetting movements of various currencies against the U.S. dollar, generally tends to mitigate the impact on net operating income of foreign currency risk. The Company estimates that a 10% movement of major foreign currencies (Euro, Sterling, Australian dollar and Canadian dollar) in the same direction against the U.S. dollar that held constant over the course of the year would increase or decrease full year net operating income by approximately $50 million.

Equity Price Risk

The Company holds investments in both public and private companies as well as private equity funds that invest primarily in financial services companies. Publicly traded investments of $18 million are classified as available for sale. Non-publicly traded investments of $12 million are accounted for using the cost method and $86 million are accounted for using the equity method. The investments that are classified as available for sale or that are not publicly traded are subject to risk of changes in market value, which if determined to be other than temporary, could result in realized impairment losses. The Company periodically reviews the carrying value of such investments to determine if any valuation adjustments are appropriate under the applicable accounting pronouncements.

Other

A number of lawsuits and regulatory proceedings are pending. See Note 15 to the consolidated financial statements included elsewhere in this report.

Part I – Item 4. Controls & Procedures

a. Evaluation of Disclosure Controls and Procedures

Based on their evaluation, as of the end of the period of this report, the Company’s Chief Executive Officer and Chief Financial Officer have concluded the Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) are effective.

b. Changes in Internal Controls

There were no changes in the Company’s internal controls over financial reporting that were identified in connection with the evaluation referred to under Part I – Item 4a above that occurred during the Company’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1.        Legal Proceedings.

The information set forth in Note 15 to the consolidated financial statements provided in Part I of this report is incorporated herein by reference.

Item 1A.     Risk Factors.

The Company and its subsidiaries face a number of risks and uncertainties. In addition to the other information in this report and our other filings with the SEC, readers should consider carefully the risk factors discussed in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2012. If any of the risks described in our Annual Report on Form 10-K or such other risks actually occur, our business, results of operations or financial condition could be materially adversely affected.

Item 2.         Unregistered Sales of Equity Securities and Use of Proceeds.

Issuer Repurchases of Equity Securities

In May 2013, the Board of Directors of the Company authorized share repurchases up to a dollar value of $1 billion of the Company's common stock. The Company repurchased approximately 3.6 million shares of its common stock for $150 million during the third quarter of 2013. The Company remains authorized to repurchase shares of its common stock up to a dollar value of approximately $712.5 million. There is no time limit on the authorization. 

Period	(a) Total Number of Shares (or Units) Purchased	(b) Average Price Paid per Share (or Unit)		(c) Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs	(d) Maximum Number (or Approximate Dollar Value) of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
July 1-31, 2013	__	__		__	$	862,499,972
August 1-31, 2013	1,855,816	$	41.8014	1,855,816	$	784,924,338
September 1-30, 2013	1,718,860	$	42.1351	1,718,860	$	712,500,017
Total Q3 2013	3,574,676	$	41.9618	3,574,676	$	712,500,017

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Item 3.         Defaults Upon Senior Securities.

None.

Item 4.         Mine Safety Disclosure.

Not Applicable.

Item 5.         Other Information.

None.

Item 6.         Exhibits.

See the Exhibit Index immediately following the signature page of this report, which is incorporated herein by reference.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date:	November 7, 2013	/s/ J. Michael Bischoff
		J. Michael Bischoff
		Chief Financial Officer
Date:	November 7, 2013	/s/ Robert J. Rapport
		Robert J. Rapport
		Senior Vice President & Controller
		(Chief Accounting Officer)

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EXHIBIT INDEX

Exhibit No.	Exhibit Name
10.1	Letter Agreement, dated as of September 18, 2013, between Marsh & McLennan Companies, Inc. and Daniel S. Glaser
10.2	Non-Competition and Non-Solicitation Agreement, effective as of September 18, 2013, between Marsh & McLennan Companies, Inc. and Daniel S. Glaser
12.1	Statement Re: Computation of Ratio of Earnings to Fixed Charges
31.1	Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer
31.2	Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer
32.1	Section 1350 Certifications
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Taxonomy Extension Presentation Linkbase

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EX-10.1

Exhibit 10.1

September 18, 2013

Daniel S. Glaser

[Address]

[City, State, Zip Code]

Subject:    Terms of Employment

Dear Dan:

This letter agreement is intended to set forth the terms of your continued employment by Marsh & McLennan Companies, Inc. (“Marsh & McLennan Companies” or the “Company”) as its President and Chief Executive Officer. This position reports to the Board of Directors of the Company (the “Board”) and is currently located in New York, NY. You were appointed to the Board effective as of January 1, 2013, and the Company shall cause you to be nominated to the Board, and use its reasonable efforts to cause you to be re-elected to the Board during your service as President and Chief Executive Officer of the Company. The Board intends that, during such time, you will serve as a member of the Board’s Executive and Finance Committees. The terms of this letter agreement are effective as of March 20, 2013.

1. Duties and Responsibilities

You will continue to devote all of your attention and time during working hours to the affairs and business of the Company and use your best efforts to perform such duties and responsibilities as shall be reasonably assigned to you and are consistent with your position. In addition, you agree to serve, without additional compensation, as an officer and director for any member of the Affiliated Group. For purposes of this letter agreement, the term “Affiliated Group” means Marsh & McLennan Companies and any corporation, partnership, joint venture, limited liability company, or other entity in which Marsh & McLennan Companies has a 10% or greater direct or indirect interest. Except for those boards or committees set forth on Exhibit A, you may not serve on corporate, civic or charitable boards or committees without the prior written consent of the Compensation Committee of the Board (the “Compensation Committee”).

2. Compensation and Benefits

Your compensation and benefits are as set forth below and in Exhibit A.

a. Annual Base Salary: You will receive an annual base salary of the amount set forth on Exhibit A, payable in installments in accordance with the Company’s payroll procedures in

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Daniel S. Glaser

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effect from time to time. Your base salary includes compensation for all time worked, as well as appropriate consideration for sick days, personal days, and other time off. Your

base salary will be considered for adjustment in succeeding years as part of the Company’s normal performance management process.

b. Vacation: You are entitled to 5 weeks of vacation annually, in accordance with our Company policy.

c. Annual Bonus: You are eligible for an annual bonus on the terms set forth on Exhibit A. Bonus awards are discretionary and may be paid in the form of cash, deferred cash or Marsh & McLennan Companies stock units, or a combination thereof. Except as provided in this paragraph and in Section 3(a), to qualify for an annual bonus, you must remain continuously and actively employed by the Company, without having tendered a notice of resignation, through the date of the bonus payment, in accordance with the terms and conditions of the award, it being understood that the Compensation Committee may waive this condition. The annual bonus shall be paid no later than March 15 of the year following the year for which such bonus is earned. In the event of your Permanent Disability (as defined below) or death, the Company shall pay you (or your estate in the case of death) a prorated target annual bonus for the year in which your termination occurs based on the portion of the year elapsed as of the date of your termination. Any such bonus amount shall be paid within 30 days of your death. In the event of your Permanent Disability, your prorated annual bonus payment is conditioned upon, and subject to, your execution and delivery to the Company within 30 days of the date of such event a valid confidential waiver and release of claims agreement (including restrictive covenants) in a form satisfactory to the Company (the “Release”) and such Release has become irrevocable as provided therein (the “Release Effective Date”). Payment of any such annual bonus amount shall then be paid within 30 days following the Release Effective Date, but in no event later than March 15 of the year following the year for which such bonus is earned.

As used in this letter agreement, “Permanent Disability” will be deemed to occur when it is determined (by Marsh & McLennan Companies’ disability carrier for the primary long-term disability plan or program applicable to you because of your employment with the Company) that you are unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment that can be expected to result in death or can be expected to last for a continuous period of not less than 12 months.

d. Annual Long-Term Incentive Compensation: You are eligible to participate in Marsh & McLennan Companies’ long-term incentive program with a target long-term incentive compensation award as set forth on Exhibit A. Long-term incentive awards are discretionary and are governed by terms and conditions approved by the Compensation Committee as

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Daniel S. Glaser

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set forth in the award agreement and in Marsh & McLennan Companies’ 2011 Incentive and Stock Award Plan (or other plan under which the long-term incentive award is granted).

In accordance with Company practice, you may be required to enter into a “Restrictive Covenants Agreement” in connection with long-term incentive awards.

e. Benefit Programs: You and your eligible family members will continue to have the opportunity to participate in the employee benefit plans, policies and programs provided by Marsh & McLennan Companies, on such terms and conditions as are generally provided to similarly situated employees of the Company. These plans may include retirement, savings, medical, life, disability, and other insurance programs as well as an array of work/life effectiveness policies and programs. Please be aware that nothing in this letter agreement shall limit Marsh & McLennan Companies’ ability to change, modify, cancel or amend any such policies or plans. In addition, you will be entitled to the benefits set forth on Exhibit A and you will continue to be eligible to participate in the Marsh & McLennan Companies Executive Financial Services Program, as in effect from time to time.

3. Termination of Employment

a. You have been designated as a “Key Employee” under the Marsh & McLennan Companies, Inc. Senior Executive Severance Pay Plan (the “Senior Executive Severance Plan”). In the event that your employment with the Company terminates for any reason, the Senior Executive Severance Plan in effect at the time of your termination will exclusively govern the terms under which you may be eligible to receive severance and/or other transition benefits from the Company. In the event that you are entitled to receive severance benefits under Article 5 of the Senior Executive Severance Plan, the Company shall also pay you the earned annual bonus, if any, for the calendar year that preceded your termination to the extent not theretofore paid.

b. Upon the termination of your employment for any reason, you shall immediately resign, as of your date of termination, from all positions that you then hold with any member of the Affiliated Group. You hereby agree to execute any and all documentation to effectuate such resignations upon request by the Company, but you shall be treated for all purposes as having so resigned upon your date of termination, regardless of when or whether you execute any such documentation.

c. During the term of this letter agreement, and, subject to any other business obligations that you may have, following your date of termination, you agree to assist the Affiliated Group in the investigation and/or defense of any claims or potential claims that may be made or

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Daniel S. Glaser

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threatened to be made against any member of the Affiliated Group, including any of their officers or directors (a “Proceeding”), and will assist the Affiliated Group in connection with any claims that may be made by any member of the Affiliated Group in any Proceeding. You agree, unless precluded by law, to promptly inform Marsh & McLennan Companies if

you are asked to participate in any Proceeding or to assist in any investigation of any member of the Affiliated Group. In addition, you agree to provide such services as are reasonably requested by the Company to assist any successor to you in the transition of duties and responsibilities to such successor. Following the receipt of reasonable documentation, the Company agrees to reimburse you for all of your reasonable out-of-pocket expenses associated with such assistance. Your request for any reimbursement, including reasonable documentation, must be submitted as soon as practicable and otherwise consistent with Company policy. In any event, your request for a taxable reimbursement, including reasonable documentation, must be submitted by the October 31st of the year following the year in which the expense is incurred. The Company will generally reimburse such expenses within 60 days of the date they are submitted, but in no event will they be reimbursed later than the December 31st of the year following the year in which the expense is incurred.

4. Restrictive Covenants

In consideration of and as a condition of your employment by Marsh & McLennan Companies as its President and Chief Executive Officer under the terms of this letter agreement, among other things, you agree to execute the attached Non-competition and Non-solicitation Agreement, which will supersede and terminate any and all previous agreements and understandings between you and the Company, whether written or oral, with respect to noncompetition or nonsolicitation restrictions.

5. Code of Conduct & Other Mandatory Training

As a condition of your employment by Marsh & McLennan Companies as its President and Chief Executive Officer under the terms of this letter agreement, you must read, understand and abide by all applicable Marsh & McLennan Companies, Inc. compliance policies found on the Marsh & McLennan Companies’ compliance website (www.compliance.mmc.com), as updated from time to time, including but not limited to The Marsh & McLennan Companies Code of Conduct, The Greater Good. You must complete any required online compliance training for your position within 30 days of your start date or within 30 days after it becomes available. In addition, you understand that you must complete any and all additional training that the Company determines is appropriate for your position during the course of your employment.

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Daniel S. Glaser

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6. Stock Ownership Guidelines

In consideration of and as a condition of your employment by Marsh & McLennan Companies as its President and Chief Executive Officer under the terms of this letter agreement, among

other things, you will be required to acquire and maintain a meaningful ownership interest, in the form of shares or stock units, in the Company’s common stock. The ownership levels vary by position and are equal to a multiple of your base salary as set forth under the Company’s stock ownership guidelines. You will receive additional information concerning these stock ownership guidelines separately. The stock ownership guidelines can be found on the Company’s website (www.mmc.com/about/ownershipGuidelines2006.pdf).

7. Credentialing

The Company supports continuing professional education. If you hold a professional license or certification, you acknowledge that you understand the obligations and the specific code of professional ethics associated with this license or certificate and agree to perform your duties in accordance with these standards. In addition, you acknowledge your responsibility to maintain any job-related licenses or certificates in accordance with the requirements issued by the applicable regulatory body or bodies. The Company agrees to reimburse you for the fees you incur during your employment with the Company in maintaining such licenses or certificates applicable to your position. You must submit your fees within 60 days after the date they are incurred. The Company will generally reimburse such fees within 60 days of the date they are submitted, but in no event will they be reimbursed later than December 31st of the year following the year in which the fee was incurred.

8. Miscellaneous

a. Notices. Notices given pursuant to this letter agreement shall be in writing and shall be deemed received when personally delivered, or on the date of written confirmation of receipt by (i) overnight carrier, (ii) telecopy, (iii) registered or certified mail, return receipt requested, postage prepaid, or (iv) such other method of delivery as provides a written confirmation of delivery. Notice to the Company shall be directed to:

Peter J. Beshar

Executive Vice President & General Counsel

Marsh & McLennan Companies, Inc.

1166 Avenue of the Americas

New York, NY 10036

September 18, 2013

Daniel S. Glaser

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Notices to or with respect to you will be directed to you, or in the event of your death, your executors, personal representatives or distributees, at your home address as set forth in the records of the Company.

b. Assignment of this Agreement. This letter agreement is personal to you and shall not be assignable by you without the prior written consent of Marsh & McLennan Companies. This letter agreement shall inure to the benefit of and be binding upon the Company and its respective successors and assigns. Marsh & McLennan Companies may assign this letter agreement, without your consent, to any member of the Affiliated Group or to any other respective successor (whether directly or indirectly, by agreement, purchase, merger, consolidation, operation of law or otherwise) to all, substantially all or a substantial portion of the business and/or assets of the Company, as applicable. If and to the extent that this letter agreement is so assigned, references to the “Company” throughout this letter agreement shall mean the Company as hereinbefore defined and any successor to, or assignee of, its business and/or assets.

c. Merger of Terms. This letter agreement supersedes all prior discussions and agreements between you and the Company or any member of the Affiliated Group with respect to the subject matters covered herein, including without limitation, the Employment Agreement dated as of December 10, 2007 between you and Marsh & McLennan Companies, as amended, the Letter Agreement, effective as of December 10, 2010, between you and Marsh & McLennan Companies, as amended effective as of April 20, 2011, and the Letter Agreement, effective as of January 1, 2013, between you and Marsh & McLennan Companies.

d. Indemnification. The Company shall indemnify you to the extent permitted by its bylaws, as in effect on the date hereof, with respect to the work you have performed for, or at the request of, the Company or any member of the Affiliated Group (as such term is defined in Section 1 above) during the term of this letter agreement.

e. Governing Law; Amendments. This letter agreement shall be governed by and construed in accordance with the laws of the State of New York, without reference to principles of conflict of laws. This letter agreement may not be amended or modified other than by a written agreement executed by you and an authorized representative of Marsh & McLennan Companies.

f. Choice of Forum. The Company and you each hereby irrevocably and unconditionally submits to the exclusive jurisdiction of any New York state court or federal court of the United States of America sitting in the State of New York, and any appellate court thereof, in any action or proceeding arising out of or relating to this letter agreement or for recognition or enforcement of any judgment relating thereto, and each of the parties hereto hereby irrevocably and unconditionally agrees that all claims in respect of any such action or proceeding may be heard

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and determined in any such New York state court or, to the extent permitted by law, in such federal court. The Company and you agree that a final judgment in any such action or proceeding shall be conclusive and may be enforced in other jurisdictions by suit on the judgment or in any other manner provided by law.

g. Severability; Captions. In the event that any provision of this letter agreement is determined to be invalid or unenforceable, in whole or in part, the remaining provisions of this letter agreement will be unaffected thereby and shall remain in full force and effect to the fullest extent permitted by law. The captions in this letter agreement are not part of the provisions of this letter agreement and will have no force or effect.

h. Section 409A. The provisions of this Section 8(h) will only apply if and to the extent required to avoid the imposition of taxes, interest and penalties on you under Section 409A of the Internal Revenue Code of 1986, as amended (“Section 409A”). Section 409A applies to nonqualified deferred compensation which exists if an individual has a “legally binding right” to compensation that is or may be payable in a later year. In furtherance of the objective of this Section 8(h), to the extent that any regulations or other guidance issued under Section 409A would result in your being subject to payment of taxes, interest or penalties under Section 409A, you and the Company agree to use our best efforts to amend this offer letter and any other plan, award, arrangement or agreement between you and the Company in order to avoid or limit the imposition of any such taxes, interest or penalties, while maintaining to the maximum extent practicable the original intent of the applicable provisions. This Section 8(h) does not guarantee that you will not be subject to taxes, interest or penalties under Section 409A with respect to compensation or benefits described or referenced in this offer letter or any other plan, award, arrangement or agreement between you and the Company.

Furthermore, and notwithstanding any contrary provision in this offer letter or any other plan, award, arrangement or agreement between you and the Company, to the extent necessary to avoid the imposition of taxes, interest and penalties on you under Section 409A, if at the time of the termination of your employment you are a “specified employee” (as defined in Section 409A), you will not be entitled to any payments upon termination of employment until the first day of the seventh month after the termination of employment and any such payments to which you would otherwise be entitled during the first six months following your termination of employment will be accumulated and paid without interest on the first day of the seventh month after the termination of employment.

Furthermore, and notwithstanding any contrary provision in this offer letter or in any other plan, award, arrangement or agreement between you and the Company that: (i) provides for the payment of nonqualified deferred compensation that is subject to Section 409A; and (ii) conditions payment or commencement of payment on one or more employment-related actions,

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Daniel S. Glaser

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such as the execution and effectiveness of a release of claims or a restrictive covenant (each an “Employment-Related Action”) (any such plan, award, arrangement or agreement is a “Relevant Plan”):

(1) if the Relevant Plan does not specify a period or provides for a period of more than 90 days for the completion of an Employment-Related Action, then the period for completion of the Employment-Related Action will be the period specified by the Company, which shall be no longer than 90 days following the event otherwise triggering the right to payment; and

(2) if the period for the completion of an Employment-Related Action includes the January 1 next following the event otherwise triggering the right to payment, then the payment shall be made or commence following the completion of the Employment-Related Action, but in no event earlier than that January 1.

i. Withholding Requirements. All amounts paid or provided to you under this letter agreement shall be subject to any applicable income, payroll or other tax withholding requirements.

Please acknowledge your agreement with the terms of this letter agreement by signing and dating the enclosed copy and returning it to me.

September 18, 2013

Daniel S. Glaser

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Sincerely,

/s/ H. Edward Hanway

H. Edward Hanway

Chairman of the Compensation Committee

of the Board of Directors of Marsh & McLennan Companies, Inc.

Accepted and Agreed:

/s/ Daniel S. Glaser        

(Signature)        

_9/19/13_________________

(Date)

September 18, 2013

Daniel S. Glaser

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Exhibit A

Board or Committee Memberships	•International Advisory Board of BritishAmerican Business •Board of Trustees of the American Institute for Chartered Property Casualty Underwriters •Insurance Information Institute •Board of Trustees of Ohio Wesleyan University
Annual Base Salary	$1,400,000
Annual Target Bonus Opportunity	Bonus awards are discretionary. Anticipated target bonus of $2,800,000 commencing with the 2013 performance year (awarded in 2014). Actual bonus may range from 0% - 200% of target, based on achievement of individual performance objectives, and/or Marsh & McLennan Companies’ performance as Marsh & McLennan Companies may establish from time to time.
Annual Target Long Term Incentive Opportunity	Long-term incentive awards are discretionary. Anticipated target grant date fair value of $7,800,000, commencing with the award made in 2013.
Other Benefits	•You will have access to a car and driver for business purposes and for work/home travel purposes. •You will have access to corporate aircraft for personal travel, up to $100,000 in aggregate incremental cost each calendar year as calculated by the Company for disclosure purposes for the Summary Compensation Table of the Company’s Proxy Statement; provided that this amount and calculation methodology will be reviewed from time to time and subject to adjustment to reflect market trends. The Company currently calculates incremental cost by adding the incremental variable costs associated with personal flights on the aircraft (including hourly charges, taxes, passenger fees, international fees and catering). If the imputed income attributable to these benefits is taxable to you, then the taxes associated with this taxable income will not be reimbursed or paid by the Company.

EX-10.2

Exhibit 10.2

NON-COMPETITION AND NON-SOLICITATION AGREEMENT

AGREEMENT, dated as of September 18, 2013, between Marsh & McLennan Companies, Inc. (”MMC”) and Daniel S. Glaser, an employee of the Company (“Executive”). The terms of this Agreement are effective as of September 18, 2013.

RECITALS:

This Agreement is entered into in consideration of the Executive’s continued employment by the Company as President and Chief Executive Officer, the Company’s execution of the September 18, 2013 Letter Agreement regarding his terms of employment, Executive’s eligibility for a discretionary bonus and other compensation as an employee of the Company, and Executive’s access to confidential information and trade secrets belonging to the Company. For the purposes of this Agreement, the term “Company” means MMC and/or any corporation, partnership, joint venture, limited liability company, or other entity in which MMC has a 10% or greater direct or indirect interest.

NOW, THEREFORE, the Company and Executive hereby agree to be bound by this Non-Competition and Non-Solicitation Agreement, as follows:

1.Confidential Information and Trade Secrets

(a)    Executive understands and acknowledges that as a senior executive and member of MMC’s Executive Committee, Executive will learn or have access to, or may assist in the development of, highly confidential and sensitive information and trade secrets about the Company, its operations and its clients, and that providing its clients with appropriate assurances that their confidences will be protected is crucial to the Company’s ability to obtain clients, maintain good client relations, and conform to contractual obligations. Such Confidential Information and Trade Secrets include but are not limited to: (i) financial and business information relating to the Company, such as information with respect to costs, commissions, fees, profits, sales, markets, mailing lists, strategies and plans for future business, new business, product or other development, potential acquisitions or divestitures, and new marketing ideas; (ii) product and technical information relating to the Company, such as product concepts and structures, new and innovative product ideas, methods, procedures, devices, machines, equipment, data processing programs, software, software codes, computer models, and research and development projects; (iii) client information, such as the identity of the Company’s clients, the names of representatives of the Company’s clients responsible for entering into contracts with the Company, the amounts paid by such clients to the Company, specific client needs and requirements, specific client characteristics related to the provision of services by the Company, client consulting needs and information about the consulting services provided or planned by the Company to serve such clients, client insurance policy information, information regarding the markets or sources with which insurance is placed, and leads and referrals to prospective clients; (iv) personnel information, such as the identity and number of the Company’s other employees and officers, their salaries, bonuses, benefits, skills, qualifications, and abilities; (v) any and all information in whatever form relating to any client or prospective client of the Company, including but not limited to, its business, employees, operations, systems, assets, liabilities, finances, products, and marketing, selling and operating practices; (vi)

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any information not included in (i) or (ii) above which Executive knows or should know is subject to a restriction on disclosure or which Executive knows or should know is considered by the Company's clients or prospective clients to be confidential, sensitive, proprietary or a trade secret or is not readily available to the public; or (vii) intellectual property, including inventions and copyrightable works. Confidential Information and Trade Secrets have actual or potential value because they are not generally known or available to the general public, but have been developed, compiled or acquired by the Company at its effort and expense and through the use of the Company’s resources. Confidential Information and Trade Secrets can be in any form, including but not limited to: oral, written or machine readable, including electronic files.

(b)    Executive acknowledges and agrees that the Company is engaged in highly competitive businesses and that its competitive position depends upon its ability to maintain the confidentiality of the Confidential Information and Trade Secrets which were developed, compiled and acquired by the Company at its effort and expense and through the use of the Company’s resources. Executive further acknowledges and agrees that any disclosing, divulging, revealing, or using of any of the Confidential Information and Trade Secrets, other than in connection with the Company’s business or as specifically authorized by the Company, will be highly detrimental to the Company and cause it to suffer serious loss of business and pecuniary damage and loss of goodwill.

(c)    At all times prior to and following Executive’s termination of employment, Executive shall not disclose to anyone or make use of any Confidential Information and Trade Secrets of the Company, which for the purposes of this Agreement, including such trade secret or proprietary or confidential information of any client, prospective client or other entity to which the Company owes an obligation not to disclose such information, which Executive acquires during Executive’s employment with the Company, including but not limited to records kept in the ordinary course of business except: (i) as such disclosure or use may be required or appropriate in connection with Executive’s work as an employee of the Company or any affiliate; (ii) when required to do so by a court of law, by any governmental agency having supervisory authority over the business of the Company or by any administrative or legislative body (including a committee thereof) with apparent jurisdiction to order Executive to divulge, disclose or make accessible such information (but only to the extent required by such requirement or order); or (iii) as to such confidential information that becomes generally known to the public or trade without the violation of this Agreement by Executive or by others under a duty of confidentiality to the Company.

(d)    Immediately upon the termination of employment with the Company for any reason or no reason, or at any time the Company so requests, Executive will return to the Company: (i) any originals and all copies of all files, notes, documents, slides (including transparencies), computer disks, hard drives, printouts, reports, lists of the Company’s clients or leads or referrals to prospective clients, and other media or property in Executive’s possession or control which contain or pertain to Confidential Information and Trade Secrets and will cooperate with the Company in arranging to remove any electronic copies of such information from personal digital storage devices which Executive uses; and (ii) all property of the Company, including but not limited to supplies, keys, access devices, books, identification cards, computers, telephones and other equipment. Executive agrees that upon completion of the obligations set forth in this subparagraph and if requested by the Company, Executive will execute a statement in a form provided by the Company declaring that he has retained no property of the Company or materials containing

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Confidential Information and Trade Secrets nor has he supplied the same to any person, except as required to carry out his duties as an employee of the Company.

2.    Assignment of Rights to Intellectual Property; Ownership of Copyrightable Works

(a)    Executive agrees to assign and hereby does assign to the Company all Executive’s present and future right, title and interest in and to any intellectual property conceived, discovered, reduced to practice and/or made by Executive during the period of time that Executive is employed by the Company (whether before, on or after the date of this Agreement), whether such intellectual property was conceived, discovered and/or reduced to practice and/or made by Executive solely or jointly with others, on or off the premises of the Company’s business, or during or after working hours, if such intellectual property: (i) was conceived, discovered, reduced to practice and/or made with the Company’s facilities, equipment, supplies, confidential information, trade secrets or intellectual property; or (ii) relates to the Company’s current, or demonstrably anticipated or potential business activities, work or research; or (iii) results from work done or to be done by Executive or under Executive’s direction, alone or jointly, for the Company (“Intellectual Property”). Executive further acknowledges and agrees that such Intellectual Property as referred to herein belongs to the Company and that the Company may, in its sole discretion, keep such Intellectual Property and/or processes pertaining thereto, whether patentable or copyrightable or not, as trade secrets and make all decisions regarding whether and how to use such Intellectual Property and/or processes. Executive further agrees not to use or seek any commercial exploitation of or otherwise use any Intellectual Property transferred to the Company or required to be assigned under this Agreement for personal use.

(b)    Executive acknowledges, agrees and intends that all copyrightable works Executive creates during the period of time that Executive is employed by the Company (whether before, on or after the date of this Agreement) and within the scope of Executive’s employment shall be considered to be “works made for hire” as defined under the U.S. Copyright Act, 17 U.S.C. §§ 101 etseq. (“Copyrightable Works”). Executive also acknowledges, agrees and intends that the Company will be deemed the author of all such works made for hire and the owner of all of the rights comprised in the copyright of such works. To the extent that any Copyrightable Works Executive creates within the scope of Executive’s employment or using the resources of the Company do not fully qualify as works made for hire, Executive agrees to assign and hereby does assign all such Copyrightable Works to the Company, including the right to sue for past, present, or future infringement.

(c)    Executive agrees to: (i) promptly disclose such Intellectual Property and Copyrightable Works to the Company; (ii) assign to the Company, without additional compensation, the entire rights to Intellectual Property and Copyrightable Works for the United States and all foreign countries; (iii) execute all documents, certifications, and all other papers and do all acts necessary to carry out the above, including enabling the Company to file and prosecute applications for, acquire, ascertain and enforce in all countries, letters patent, trademark registrations and/or copyrights covering or otherwise relating to Intellectual Property and Copyrightable Works and to enable the Company to protect its proprietary interests therein; and (iv) give testimony in any action or proceeding to enforce rights in the Intellectual Property and Copyrightable Works.

(d)    In the event the Company is unable for any reason, after reasonable effort, to secure Executive’s signature on any document needed in connection with the actions specified

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in this Section 2, Executive hereby irrevocably designates and appoints the Company and its duly authorized officers and agents as Executive’s agent and attorney in fact, to act for and on Executive’s behalf to execute, verify and file any such documents and to do all other lawfully permitted acts to further the purposes of the preceding paragraph thereon with the same legal force and effect as if executed by Executive. Executive hereby assigns to the Company any and all claims, of any nature whatsoever, which Executive now or may hereafter have for infringement of any proprietary rights assigned or transferred hereunder to the Company.

(e)    Executive understands and agrees: (i) no license or conveyance of any rights or warranty to Executive is granted or implied by the Company furnishing or disclosing any Intellectual Property or Copyrightable Works to Executive; and (ii) the Company shall retain whatever ownership and other proprietary rights it otherwise has in all Intellectual Property and Copyrightable Works.

3.    Non-Competition

(a)    Executive acknowledges and agrees that the Company is engaged in highly competitive businesses and that by virtue of Executive’s position and responsibilities with the Company and Executive’s access to Confidential Information and Trade Secrets, engaging in any business which is directly competitive with the Company will cause it great and irreparable harm.

(b)    Accordingly, both during Executive’s employment with the Company and during the twenty-four (24) month period following the cessation of Executive’s employment with the Company, whether voluntarily or involuntarily and for any reason, Executive shall not, without the express written consent of the Compensation Committee of the Company’s Board of Directors, directly or indirectly engage in any activity – whether as an employee, consultant, principal, member, agent, officer, director, partner or shareholder (except as a less than 1% shareholder of a publicly traded company) – that is competitive with any business of the Company and that is conducted by the Company as of the date of the termination of the Executive’s employment. For purposes of this Agreement, the Company’s “business” means the provision of services and/or products of the type provided by the Company including but not limited to risk management, risk consulting, insurance broking, alternative risk financing, and insurance program management services; reinsurance broking and consulting, and risk assessment analytics; talent, health, benefits, retirement and investment consulting and services; and management and economic consulting. In recognition of the international nature of the Company’s business, which includes the sale of its products and services globally, this restriction shall apply in all countries throughout the world where the Company does business as of the date of termination of Executive’s employment with the Company.

4.    Non-Solicitation/Non-Servicing of Clients

(a)Executive acknowledges and agrees that solely by reason of employment by the Company, Executive has and will come into contact with and develop and maintain relationships with a significant number of the Company’s clients and prospective clients and has and will have access to Confidential Information and Trade Secrets relating thereto, including those regarding the Company’s clients, prospective clients and related information.

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(b)    Consequently, during the twenty-four (24) month period following the cessation of Executive’s employment with the Company, whether voluntarily or involuntarily and for any reason, Executive shall not, without the express written consent of the Compensation Committee of the Company’s Board of Directors, directly or indirectly: (i) solicit clients or prospective clients of the Company for the purpose of selling or providing products or services of the type sold or provided by Executive while employed by the Company; (ii) induce clients or prospective clients of the Company to terminate, cancel, not renew, or not place business with the Company; (iii) perform or supervise the performance of services or provision of products of the type sold or provided by Executive while he was employed by the Company on behalf of any clients or prospective clients of the Company; or (iv) assist others to do the acts specified in Sections 4(b) (i)-(iii). This restriction shall apply only to those clients or prospective clients of the Company with whom Executive had contact or about whom Executive obtained Confidential Information and Trade Secrets during the last two (2) years of Executive’s employment with the Company. For the purposes of this Section 4, the term “contact” means interaction between Executive and the client which takes place to further the business relationship, or making (or assisting or supervising the performance or provision of) sales to or performing or providing (or assisting or supervising the performance or provision of) services or products for the client on behalf of the Company. For purposes of this Section 4, the term “contact” with respect to a “prospective” client means interaction between Executive and a potential client of the Company which takes place to obtain the business of the potential client on behalf of the Company. It shall not be a defense to a claim that this Section has been breached that Executive’s new employer or entity for which Executive is performing services has previously solicited or served the client.

5.    Non-Solicitation of Employees

Executive acknowledges and agrees that solely as a result of employment with the Company, and in light of the broad responsibilities of such employment, which include working with other employees of the Company, Executive has and will come into contact with and acquire Confidential Information and Trade Secrets regarding the Company’s other employees. Accordingly, during Executive’s employment with the Company and during the twenty-four (24) month period following the cessation of Executive’s employment with the Company or any affiliate, whether voluntarily or involuntarily and for any reason, Executive shall not, without the express written consent of the Compensation Committee of the Company’s Board of Directors, either on Executive’s own account or on behalf of any person, company, corporation, or other entity, directly or indirectly, solicit, or endeavor to cause any employee of the Company with whom Executive, during the last two (2) years of his employment with the Company, came into contact for the purpose of soliciting or servicing business or about whom Executive obtained Confidential Information and Trade Secrets, to leave employment with the Company.

6.    Enforcement

(a)    Executive acknowledges and agrees that the covenants contained in Sections 1, 2, 3, 4 and 5 of this Agreement are reasonable and necessary to protect the Confidential Information and Trade Secrets, business and goodwill of the Company and its subsidiaries. Executive further represents that his experience and capabilities are such that the provisions of this Agreement will not prevent him from earning a livelihood or cause undue hardship and that the covenants contained in Sections 1, 2, 3, 4 and 5 are reasonable in view of the benefits and consideration Executive has received or will receive from the Company.

Page 6

(b)    In recognition of the fact that irreparable harm will result to the Company in the event of any breach or anticipatory breach of Section 1, 2, 3, 4 or 5 of this Agreement by Executive, or Executive’s claim in a declaratory judgment action that all or part of this Agreement is unenforceable, and that money damages may not provide adequate relief, the parties agree that the Company shall be entitled to the following particular forms of relief as a result of such breach, in addition to any remedies otherwise available to it at law or equity: (a) injunctions, both preliminary and permanent, enjoining or restraining such breach or anticipatory breach, and other equitable relief, and Executive hereby consents to the issuance thereof forthwith and without bond by any court of competent jurisdiction; and (b) recovery of all reasonable sums and costs, including attorneys’ fees, expert witness fees, expenses and costs incurred by the Company to defend or enforce the provisions of this Agreement.

(c)    In the event the Company is required to enforce any of its rights contained in Section 4 through legal proceedings, the parties acknowledge that it may be difficult or impossible to ascertain the precise amount of damages or lost profits incurred by the Company. Therefore, in the event of any breach by Executive of Section 4 of this Agreement, in addition to any other relief available to the Company at law or in equity, Executive agrees that the damages for each client lost in whole or in part by the Company as a result of Executive’s breach shall be two hundred percent (200%) of the gross commissions and fees received by the Company from such client during the twelve (12) months preceding the cessation of Executive’s employment. In arriving at this calculation, Executive agrees that the Company and Executive have considered the following factors: (i) the value of the clients; (ii) the business of the Company; (iii) the type and quality of the clients; (iv) the substantial amount of time, effort and expense incurred by the Company in acquiring, developing and maintaining the clients; (v) the number of years the Company typically retains such clients; (vi) the profitability of renewal business; and (vii) various other factors relating to the relationship between the Company and the clients. Executive further agrees that Executive shall be obligated to reimburse the Company for all reasonable costs, expenses and counsel fees incurred by the Company in connection with the enforcement of its rights hereunder.

(d)    The restrictive periods set forth in this Agreement (including those set forth in Sections 3, 4 and 5 hereof) shall not expire and shall be tolled during any period in which Executive is in violation of such restrictive periods, and therefore such restrictive periods shall be extended for a period equal to the duration of any violations thereof by Executive.

7.    Employment At-Will

Executive understands that this Agreement does not constitute a contract of employment and does not promise or imply that his employment will continue for any period of time. Unless otherwise agreed to under any employment agreement between Executive and the Company whether executed prior to this Agreement or at any time hereafter, employment with the Company is “at will” and may be terminated either by Executive or the Company at any time, with or without cause, and with or without notice.

8.    Miscellaneous

(a)    Governing Law; Choice of Forum. The parties acknowledge that MMC and its operating companies are headquartered in New York, that senior members of the leadership team of the Company are based in New York, and that breach of this Agreement will cause injury

Page 7

in New York. This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York, without regard to its conflict of laws provisions. The parties, being desirous of having any disputes resolved in a forum having a substantial body of law and experience with the matters contained herein, agree that any action or proceeding with respect to this Agreement and Executive’s employment shall be brought exclusively in the Civil Court of the City of New York, New York County, or in the Supreme Court of the State of New York, New York County, or in the United States District Court for the Southern District of New York, and the parties agree to the jurisdiction thereof. The parties hereby irrevocably waive any objection they may now or hereafter have to the laying of venue of any such action in the said court(s), and further irrevocably waive any claim they may now or hereafter have that any such action brought in said court(s) has been brought in an inconvenient forum. Executive recognizes that, should any dispute or controversy arising from or relating to this Agreement be submitted for adjudication to any court, arbitration panel or other third party, the preservation of the secrecy of Confidential Information and Trade Secrets may be jeopardized. Consequently, Executive agrees that all issues of fact shall be severed for trial without a jury.

(b)    Severability. The parties agree they have attempted to limit the scope of the post-employment restrictions contained herein to the extent necessary to protect Confidential Information and Trade Secrets, client relationships and goodwill. It is the desire and intent of the parties that the provisions of this Agreement shall be enforced to the fullest extent permissible under applicable laws and public policies. Accordingly, if any particular portion of this Agreement shall be adjudicated to be invalid or unenforceable, this Agreement shall be deemed amended to delete therefrom such invalid portion, and reformed to the extent valid and enforceable. Such deletion and reformation shall apply only with respect to the operation of this Agreement in the particular jurisdiction in which such adjudication is made.

(c)    Modification; Agreement to Enter into Additional Agreements. No modification of this Agreement shall be valid unless made in a written or electronic instrument signed by both parties hereto, wherein specific reference is made to this Agreement. Should Executive move to a different state or jurisdiction while employed by the Company or upon written request of the Company, Executive agrees to sign, without further consideration, upon direction by the Company, such further writings to effectuate the provisions of this Agreement as necessary to comply with applicable law. Executive’s failure to sign such additional agreements shall constitute a breach of this Agreement.

(d)    Non-Waiver. The failure of either the Company or Executive, whether purposeful or otherwise, to exercise in any instance any right, power, or privilege under this Agreement or under law shall not constitute a waiver of the same or any other right, power, or privilege in any other instance. Any waiver by the Company or by Executive must be in a written or electronic instrument signed by either Executive, if Executive is seeking to waive any of his rights under this Agreement, or by the Compensation Committee of the Company’s Board of Directors, if the Company is seeking to waive any of its rights under this Agreement.

(e)    Binding Effect. This Agreement shall be binding upon Executive, Executive’s heirs, executors and administrators, and upon the Company, and its affiliates, successors and assigns, and shall inure to the benefit of the Company and its affiliates, successors and assigns. This Agreement may not be assigned by Executive. This Agreement may be enforced by the Company and its affiliates, successors and assigns.

Page 8

(f)    Other Agreements. This Agreement contains the entire agreement between Executive and the Company with respect to non-competition and non-solicitation restrictions, and supersedes and terminates any and all previous such agreements and understandings between Executive and the Company, whether written or oral, with respect to noncompetition or nonsolicitation restrictions. If the non-competition and non-solicitation restrictions contained in this Agreement are ruled invalid for any reason by a court of competent jurisdiction, then the non-competition and non-solicitation restrictions contained in any and all previous agreements shall be revived. The obligations under this Agreement also shall survive any changes made in the future to the employment terms of Executive, including but not limited to changes in salary, benefits, bonus plans, job title and job responsibilities.

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IN WITNESS WHEREOF, the parties have executed this Agreement as of the day

and year first hereinabove set forth.

/s/ H. Edward Hanway__________/s/ Daniel S. Glaser_______

H. Edward Hanway                        Daniel S. Glaser

Chairman of the Compensation Committee

of the Board of Directors of

Marsh & McLennan Companies, Inc.

EX-12.1

Exhibit 12.1

Marsh & McLennan Companies, Inc. and Subsidiaries

Ratio of Earnings to Fixed Charges

(In millions, except ratios)

	Nine Months Ended September 30, 2013		Years Ended December 31,
	(Unaudited)			2012		2011		2010		2009		2008
Earnings
Income before income taxes	$	1,535		$	1,696	$	1,404	$	769	$	552	$	494
Interest expense	124			181		199		233		241		220
Portion of rents representative of the interest factor	103			139		143		140		132		145
	$	1,762		$	2,016	$	1,746	$	1,142	$	925	$	859
Fixed Charges
Interest expense	$	124		$	181	$	199	$	233	$	241	$	220
Portion of rents representative of the interest factor	103			139		143		140		132		145
	$	227		$	320	$	342	$	373	$	373	$	365
Ratio of Earnings to Fixed Charges	7.8			6.3		5.1		3.1		2.5		2.4

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Daniel S. Glaser, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Marsh & McLennan Companies, Inc. (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	November 7, 2013	/s/ Daniel S. Glaser
		Daniel S. Glaser
		President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, J. Michael Bischoff, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Marsh & McLennan Companies, Inc. (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	November 7, 2013	/s/ J. Michael Bischoff
		J. Michael Bischoff
		Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer and Chief Financial Officer

The certification set forth below is being submitted in connection with the Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2013 of Marsh & McLennan Companies, Inc. (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and Section 1350 of Chapter 63 of Title 18 of the United States Code.

Daniel S. Glaser, the President and Chief Executive Officer, and J. Michael Bischoff, Chief Financial Officer, of Marsh & McLennan Companies, Inc. each certifies that, to the best of his knowledge:

1. the Report fully complies with the requirements of Section 13(a) or 15(d) of the Exchange Act; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Marsh & McLennan Companies, Inc.

Date:	November 7, 2013	/s/ Daniel S. Glaser
		Daniel S. Glaser
		President and Chief Executive Officer

Date:	November 7, 2013	/s/ J. Michael Bischoff
		J. Michael Bischoff
		Chief Financial Officer

XML

Goodwill And Other Intangibles

9 Months Ended

Sep. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill And Other Intangibles

Goodwill and Other Intangibles

The Company is required to assess goodwill and any indefinite-lived intangible assets for impairment annually, or more frequently if circumstances indicate impairment may have occurred. The Company performs the annual impairment test for each of its reporting units during the third quarter of each year. In 2013, the Company elected to not use the option to perform a qualitative assessment to determine if a step 1 impairment test was necessary and instead elected to perform a step 1 impairment test. Fair values of the reporting units are estimated using either a market approach or a discounted cash flow model. This fair value determination was categorized as Level 3 in the fair value hierarchy. Carrying values for the reporting units are based on balances at the prior quarter end and include directly identified assets and liabilities as well as an allocation of those assets and liabilities not recorded at the reporting unit level. The Company completed its 2013 annual review in the third quarter and concluded goodwill was not impaired, as the fair value of each reporting unit exceeded its carrying value by a substantial margin.

Other intangible assets that are not deemed to have an indefinite life are amortized over their estimated lives and reviewed for impairment upon the occurrence of certain triggering events in accordance with applicable accounting literature.

Changes in the carrying amount of goodwill are as follows:

September 30,
(In millions of dollars)	2013			2012
Balance as of January 1, as reported	$	6,792		$	6,562
Goodwill acquired	93			126
Other adjustments(a)	(20		)	(9		)
Balance at September 30,	$	6,865		$	6,679

^(a)  Primarily reflects the impact of foreign exchange in each period.

Goodwill allocable to the Company’s reportable segments is as follows: Risk & Insurance Services, $4.7 billion and Consulting, $2.2 billion.

Amortized intangible assets consist of the cost of client lists, client relationships and trade names acquired. The gross cost and accumulated amortization are as follows:

	September 30, 2013						December 31, 2012
(In millions of dollars)	Gross Cost		Accumulated Amortization		Net Carrying Amount		Gross Cost		Accumulated Amortization		Net Carrying Amount
Amortized intangibles	$	887	$	399	$	488	$	814	$	345	$	469

The Company recorded an intangible asset impairment charge of $5 million and $8 million in the third quarter of 2013 and 2012, respectively, in the Risk & Insurance Services segment.

Aggregate amortization expense for both nine months ended September 30, 2013 and 2012 was $53 million and the estimated future aggregate amortization expense is as follows:

For the Years Ending December 31,
(In millions of dollars)	Estimated Expense
2013 (excludes amortization through September 30, 2013)	$	18
2014	71
2015	69
2016	61
2017	51
Subsequent years	218
	$	488

XML

Goodwill And Other Intangibles (Amortized Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Cost	$ 887	$ 814
Accumulated Amortization	399	345
Net Carrying Amount	$ 488	$ 469

XML

Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 2,174	$ 2,301
Receivables
Commissions and fees	3,120	2,858
Advanced premiums and claims	62	62
Other	219	244
Gross receivables	3,401	3,164
Less-allowance for doubtful accounts and cancellations	(107)	(106)
Net receivables	3,294	3,058
Current deferred tax assets	459	410
Other current assets	234	194
Total current assets	6,161	5,963
Goodwill and intangible assets	7,353	7,261
Fixed assets (net of accumulated depreciation and amortization of $1,611 at September 30, 2013 and $1,582 at December 31, 2012)	824	809
Pension related assets	780	260
Deferred tax assets	1,020	1,223
Other assets	838	772
Total assets	16,976	16,288
Current liabilities:
Short-term debt	583	260
Accounts payable and accrued liabilities	1,830	1,721
Accrued compensation and employee benefits	1,194	1,473
Accrued income taxes	148	110
Dividends payable	138
Total current liabilities	3,893	3,564
Fiduciary liabilities	4,657	3,992
Less – cash and investments held in a fiduciary capacity	(4,657)	(3,992)
Net fiduciary assets	0	0
Long-term debt	2,623	2,658
Pension, post-retirement and post-employment benefits	1,975	2,094
Liabilities for errors and omissions	380	460
Other liabilities	985	906
Commitments and contingencies
Equity:
Preferred stock, $1 par value, authorized 6,000,000 shares, none issued	0	0
Common stock, $1 par value, authorized 1,600,000,000 shares, issued 560,641,640 shares at September 30, 2013 and December 31, 2012	561	561
Additional paid-in capital	1,010	1,107
Retained earnings	9,151	8,628
Accumulated other comprehensive loss	(3,213)	(3,307)
Non-controlling interests	78	64
Stockholders' equity before treasury stock	7,587	7,053
Less – treasury shares, at cost, 13,338,019 shares at September 30, 2013 and 15,133,774 shares at December 31, 2012	(467)	(447)
Total equity	7,120	6,606
Total liabilities and stockholders' equity	$ 16,976	$ 16,288

XML

Principles Of Consolidation And Other Matters

9 Months Ended

Sep. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Principles of Consolidation and Other Matters

Principles of Consolidation and Other Matters

The consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been omitted pursuant to such rules and regulations for interim filings, although the Company believes that the information and disclosures presented are adequate to make such information and disclosures not misleading. These consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012 (the “2012 10-K”) and the amended Items 7 and 8 of the Annual Report filed May 10, 2013.

The financial information contained herein reflects all adjustments consisting only of normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the Company’s results of operations for the three- and nine- month periods ended September 30, 2013 and 2012.

Cash and Cash Equivalents

Cash and cash equivalents primarily consist of certificates of deposit and time deposits, with original maturities of three months or less, and money market funds. The estimated fair value of the Company's cash and cash equivalents approximates their carrying value. The Company is required to maintain operating funds of approximately $250 million related to regulatory requirements outside the U.S. or as collateral under captive insurance arrangements.

Investment Income

The caption “Investment income” in the consolidated statements of income comprises realized and unrealized gains and losses from investments recognized in current earnings. It includes, when applicable, other than temporary declines in the value of debt and available for sale securities and the change in value of the Company’s holdings in certain private equity funds, including equity method gains (losses) on its investment in the Trident funds. The Company’s investments may include direct investments in insurance or consulting companies and investments in private equity funds. The Company recorded(losses)gains on its investment in Trident II of $0 million and $(1) million for the three months endedSeptember 30, 2013 and 2012, respectively, and $20 million and $23 million for the nine months endedSeptember 30, 2013 and 2012, respectively, including $15 million of deferred performance fees recognized in the first quarter of 2013. Trident II has now harvested substantially all its portfolio investments and there are no remaining capital commitments for this fund. The Company has recognized substantially all of the performance fees related to its general partnership interest in Trident II. Investment income for the three- and nine- months ended September 30, 2013 includes performance fees of $13 million and $34 million, respectively, which had been deferred, that are no longer subject to claw-back from Trident III. At September 30, 2013, the Company has deferred performance fees of approximately $43 million related to Trident III. Recognition of these deferred performance fees will only occur as investments are harvested and the performance fees are no longer subject to claw-back. Timing of this is unknown and is not controlled by the Company.

Income Taxes

The Company's effective tax rate in the third quarter of 2013 was 32.1%. This rate reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation and the impact of tax rate changes on the Company's deferred tax assets and liabilities.

The Company's effective tax rate in the third quarter of 2012 was 26.8%. As discussed above, this rate reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation. In addition, it reflects several discrete tax benefits, including the benefit from recording previously unrecognized tax benefits as a result of expiring statutes of limitations for U.S. federal tax years 2006 and 2008, and a favorable permanent difference related to a tax-free adjustment to the estimated liability for contingent consideration. Partially offsetting these benefits in the quarter were charges to increase unrecognized tax benefits for certain operations in Asia and U.S. tax costs related to actions taken during the quarter to reduce positions in the Euro currency held by certain of the Company's non-U.S. operations.

The effective tax rate for the first nine months of 2013 was 30.1% compared with 29.2% for the first nine months of 2012. The rate in both periods reflects non-U.S. earnings subject to tax at rates below the U.S. statutory rate, including the effect of repatriation, and the impact of discrete tax matters such as the resolution of tax examinations.

The Company is routinely examined by tax authorities in the jurisdictions in which it has significant operations. The Company regularly considers the likelihood of assessments in each of the taxing jurisdictions resulting from examinations. When evaluating the potential imposition of penalties, the Company considers a number of relevant factors under penalty statutes, including appropriate disclosure of the tax return position, the existence of legal authority supporting the Company's position, and reliance on the opinion of professional tax advisors.

The Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in tax returns. The Company's gross unrecognized tax benefits increased from

$117 million at December 31, 2012 to $133 million at September 30, 2013. It is reasonably possible that the total amount of unrecognized tax benefits will decrease between zero and approximately $20 million within the next twelve months due to settlement of audits and expiration of statutes of limitation.

XML

Segment Information

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Segment Information

Segment Information

The Company is organized based on the types of services provided. Under this organizational structure, the Company’s business segments are:

▪ Risk and Insurance Services, comprising insurance services (Marsh) and reinsurance services (Guy Carpenter); and

▪ Consulting, comprising Mercer and Oliver Wyman Group

The accounting policies of the segments are the same as those used for the consolidated financial statements described in Note 1 to the Company’s 2012 10-K. Segment performance is evaluated based on segment operating income, which includes directly related expenses, and charges or credits related to integration and restructuring but not the Company’s corporate-level expenses. Revenues are attributed to geographic areas on the basis of where the services are performed.

Effective January 1, 2013, the Corporate Benefits and Association businesses, previously part of Marsh's U.S. Consumer operations, were transferred to Mercer. The segment data presented below reflects the reclassification of prior year segment data to conform with the current year presentations.

Selected information about the Company’s operating segments for the three-and nine-month periods ended September 30, 2013 and 2012 are as follows:

	Three Months Ended September 30,							Nine Months Ended September 30,
(In millions of dollars)	Revenue				Operating Income (Loss)			Revenue				Operating Income (Loss)
2013 –
Risk and Insurance Services	$	1,504		(a)	$	222		$	4,963		(c)	$	1,111
Consulting	1,437			(b)	232			4,209			(d)	624
Total Operating Segments	2,941				454			9,172				1,735
Corporate / Eliminations	(9		)		(50		)	(26		)		(147		)
Total Consolidated	$	2,932			$	404		$	9,146			$	1,588
2012–
Risk and Insurance Services	$	1,451		(a)	$	222		$	4,781		(c)	$	1,024
Consulting	1,405			(b)	205			4,174			(d)	552
Total Operating Segments	2,856				427			8,955				1,576
Corporate / Eliminations	(11		)		(49		)	(33		)		(153		)
Total Consolidated	$	2,845			$	378		$	8,922			$	1,423

^(a)  Includes inter-segment revenue of $1 million in both 2013 and 2012, interest income on fiduciary funds of $7 million and $10 million in 2013 and 2012, respectively, and equity method income of $2 million in 2013.

^(b)  Includes inter-segment revenue of $8 million and $10 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $1 million in both 2013 and 2012.

^(c)  Includes inter-segment revenue of $4 million in both 2013 and 2012, interest income on fiduciary funds of $21 million and $31 million in 2013 and 2012, respectively, and equity method income of $10 million in both 2013 and 2012.

^(d)  Includes inter-segment revenue of $22 million and $29 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2013 and 2012, respectively.

Details of operating segment revenue for the three and nine-month periods ended September 30, 2013 and 2012 are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(In millions of dollars)	2013			2012			2013			2012
Risk and Insurance Services
Marsh	$	1,241		$	1,201		$	4,038		$	3,895
Guy Carpenter	263			250			925			886
Total Risk and Insurance Services	1,504			1,451			4,963			4,781
Consulting
Mercer	1,072			1,054			3,157			3,086
Oliver Wyman Group	365			351			1,052			1,088
Total Consulting	1,437			1,405			4,209			4,174
Total Operating Segments	2,941			2,856			9,172			8,955
Corporate/ Eliminations	(9		)	(11		)	(26		)	(33		)
Total	$	2,932		$	2,845		$	9,146		$	8,922

The following reflects the impact of the transfer discussed above on prior year's segment information:

	Three Months Ended September 30, 2012									Nine Months Ended September 30, 2012
(In millions of dollars)	As Reported			Reclassification			Current Presentation			As Reported			Reclassification			Current Presentation
Revenue
Risk and Insurance Services
Marsh	$	1,260		$	(59	)	$	1,201		$	4,069		$	(174	)	$	3,895
Guy Carpenter	250			—			250			886			—			886
Total Risk and Insurance Services	1,510			(59		)	1,451			4,955			(174		)	4,781
Consulting
Mercer	995			59			1,054			2,912			174			3,086
Oliver Wyman Group	351			—			351			1,088			—			1,088
Total Consulting	1,346			59			1,405			4,000			174			4,174
Total Operating Segments	2,856			—			2,856			8,955			—			8,955
Corporate Eliminations	(11		)	—			(11		)	(33		)	—			(33		)
Total Revenue	$	2,845		$	—		$	2,845		$	8,922		$	—		$	8,922
Operating Income
Risk and Insurance Services	$	234		$	(12	)	$	222		$	1,052		$	(28	)	$	1,024
Consulting	193			12			205			524			28			552
Total Operating Segments	427			—			427			1,576			—			1,576
Corporate Eliminations	(49		)	—			(49		)	(153		)	—			(153		)
Total Consolidated	$	378		$	—		$	378		$	1,423		$	—		$	1,423

XML

Claims, Lawsuits And Other Contingencies (Details) (GBP £) In Millions, unless otherwise specified	Sep. 30, 2013 lawsuit
Governmental Inquiries and Related Claims [Member]
Loss Contingencies [Line Items]
Number of actions instituted by policyholders	2
Other Contingencies-Guarantees [Member]
Loss Contingencies [Line Items]
Amount reinsured by third party	£ 40

XML

Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Financial instruments owned:
Total assets measured at fair value	$ 172		$ 628
Fiduciary Assets:
Fiduciary assets	4		152
Liabilities:
Total liabilities measured at fair value	345		319
Identical Assets (Level 1) [Member]
Financial instruments owned:
Total assets measured at fair value	169		622
Fiduciary Assets:
Fiduciary assets	4		149
Liabilities:
Total liabilities measured at fair value	0		0
Observable Inputs (Level 2) [Member]
Financial instruments owned:
Total assets measured at fair value	3		6
Fiduciary Assets:
Fiduciary assets			3
Liabilities:
Total liabilities measured at fair value	253		256
Unobservable Inputs (Level 3) [Member]
Financial instruments owned:
Total assets measured at fair value	0		0
Fiduciary Assets:
Fiduciary assets	0		0
Liabilities:
Total liabilities measured at fair value	92		63
Other Assets [Member]
Financial instruments owned:
Mutual funds	146	[1]	139	[1]
Other Assets [Member] | Identical Assets (Level 1) [Member]
Financial instruments owned:
Mutual funds	146	[1]	139	[1]
Other Assets [Member] | Observable Inputs (Level 2) [Member]
Financial instruments owned:
Mutual funds	0	[1]	0	[1]
Other Assets [Member] | Unobservable Inputs (Level 3) [Member]
Financial instruments owned:
Mutual funds	0	[1]	0	[1]
Cash and Cash Equivalents [Member]
Financial instruments owned:
Money market funds	23	[2]	483	[2]
Cash and Cash Equivalents [Member] | Identical Assets (Level 1) [Member]
Financial instruments owned:
Money market funds	23	[2]	483	[2]
Cash and Cash Equivalents [Member] | Observable Inputs (Level 2) [Member]
Financial instruments owned:
Money market funds	0	[2]	0	[2]
Cash and Cash Equivalents [Member] | Unobservable Inputs (Level 3) [Member]
Financial instruments owned:
Money market funds	0	[2]	0	[2]
Other Receivables [Member]
Financial instruments owned:
Interest rate swap derivatives	3	[3]	6	[3]
Other Receivables [Member] | Identical Assets (Level 1) [Member]
Financial instruments owned:
Interest rate swap derivatives	0	[3]	0	[3]
Other Receivables [Member] | Observable Inputs (Level 2) [Member]
Financial instruments owned:
Interest rate swap derivatives	3	[3]	6	[3]
Other Receivables [Member] | Unobservable Inputs (Level 3) [Member]
Financial instruments owned:
Interest rate swap derivatives	0	[3]	0	[3]
Accounts Payable and Accrued Liabilities and Other Liabilities [Member]
Liabilities:
Contingent consideration liability	92	[4]	63	[4]
Accounts Payable and Accrued Liabilities and Other Liabilities [Member] | Identical Assets (Level 1) [Member]
Liabilities:
Contingent consideration liability	0	[4]	0	[4]
Accounts Payable and Accrued Liabilities and Other Liabilities [Member] | Observable Inputs (Level 2) [Member]
Liabilities:
Contingent consideration liability	0	[4]	0	[4]
Accounts Payable and Accrued Liabilities and Other Liabilities [Member] | Unobservable Inputs (Level 3) [Member]
Liabilities:
Contingent consideration liability	92	[4]	63	[4]
Long-term Debt [Member] | Senior Debt Obligations Due 2014 [Member]
Liabilities:
Senior Notes due 2014	253	[5]	256	[5]
Long-term Debt [Member] | Senior Debt Obligations Due 2014 [Member] | Identical Assets (Level 1) [Member]
Liabilities:
Senior Notes due 2014	0	[5]	0	[5]
Long-term Debt [Member] | Senior Debt Obligations Due 2014 [Member] | Observable Inputs (Level 2) [Member]
Liabilities:
Senior Notes due 2014	253	[5]	256	[5]
Long-term Debt [Member] | Senior Debt Obligations Due 2014 [Member] | Unobservable Inputs (Level 3) [Member]
Liabilities:
Senior Notes due 2014	0	[5]	0	[5]
U.S. Municipal Bonds [Member]
Fiduciary Assets:
Fiduciary assets			3
U.S. Municipal Bonds [Member] | Identical Assets (Level 1) [Member]
Fiduciary Assets:
Fiduciary assets	0		0
U.S. Municipal Bonds [Member] | Observable Inputs (Level 2) [Member]
Fiduciary Assets:
Fiduciary assets			3
U.S. Municipal Bonds [Member] | Unobservable Inputs (Level 3) [Member]
Fiduciary Assets:
Fiduciary assets	0		0
Money Market Funds [Member]
Fiduciary Assets:
Fiduciary assets	4		149
Money Market Funds [Member] | Identical Assets (Level 1) [Member]
Fiduciary Assets:
Fiduciary assets	4		149
Money Market Funds [Member] | Observable Inputs (Level 2) [Member]
Fiduciary Assets:
Fiduciary assets	0		0
Money Market Funds [Member] | Unobservable Inputs (Level 3) [Member]
Fiduciary Assets:
Fiduciary assets	$ 0		$ 0

[1] Included in other assets in the consolidated balance sheets.

[2] Included in cash and cash equivalents in the consolidated balance sheets.

[3] Included in other receivables in the consolidated balance sheets.

[4] Included in accounts payable and accrued liabilities and other liabilities in the consolidated balance sheets.

[5] Included in long term debt in the consolidated balance sheets.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Fair Value Hierarchy

The Company has categorized its assets and liabilities that are valued at fair value on a recurring basis into a three-level fair value hierarchy as defined by the FASB. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets and liabilities (Level 1) and lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy, for disclosure purposes, is determined based on the lowest level input that is significant to the fair value measurement.

Assets and liabilities recorded in the consolidated balance sheets at fair value are categorized based on the inputs in the valuation techniques as follows:

Level 1. Assets and liabilities whose values are based on unadjusted quoted prices for identical assets or liabilities in an active market (examples include active exchange-traded equity securities, most U.S. Government and agency securities, money market mutual funds and certain other sovereign government obligations).

Level 2. Assets and liabilities whose values are based on the following:

a) Quoted prices for similar assets or liabilities in active markets;

b) Quoted prices for identical or similar assets or liabilities in non-active markets (examples include corporate and municipal bonds, which trade infrequently);

c) Pricing models whose inputs are observable for substantially the full term of the asset or liability (examples include most over-the-counter derivatives, including interest rate and currency swaps); and

d) Pricing models whose inputs are derived principally from or corroborated by observable market data through correlation or other means for substantially the full asset or liability (for example, certain mortgage loans).

Level 3. Assets and liabilities whose values are based on prices, or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. These inputs reflect management’s own assumptions about the assumptions a market participant would use in pricing the asset or liability (examples include private equity investments, certain commercial mortgage whole loans, and long-dated or complex derivatives including certain foreign exchange options and long-dated options on gas and power).

Valuation Techniques

Mutual Funds and Money Market Funds - Level 1

Investments for which market quotations are readily available are valued at the sale price on their principal exchange, or official closing bid price for certain markets. If no sales are reported, the security is valued at its last reported bid price.

U.S. Municipal Bonds - Level 2

These investments are valued on the basis of valuations furnished by an independent pricing service. Such services or dealers determine valuations for normal institutional-size trading units of such securities using methods based on market transactions for comparable securities and various relationships, generally recognized by institutional traders, between securities.

Interest Rate Swap Derivative - Level 2

The fair value of interest rate swap derivatives is based on the present value of future cash flows at each valuation date resulting from utilization of the swaps, using a constant discount rate of 1.6% compared to discount rates based on projected future yield curves (See Note 12).

Senior Notes due 2014 - Level 2

The fair value of the first $250 million of Senior Notes maturing in 2014 is estimated to be the amortized cost of those notes adjusted by the fair value of the interest rate swap derivative, discussed above. In the first quarter of 2011, the Company entered into two interest rate swaps that effectively convert interest on a portion of its Senior Notes from a fixed rate to a floating rate. The swaps are designated as fair value hedging instruments. The change in the fair value of the swaps is recorded on the balance sheet. The carrying value of the debt related to these swaps is adjusted by an equal amount (See Note 12).

Contingent Consideration Liability - Level 3

Purchase consideration for some acquisitions made by the Company includes contingent consideration arrangements. Contingent consideration arrangements are primarily based on achieving EBITDA and revenue targets over two to four years. The fair value of contingent consideration is estimated as the present value of future cash flows that would result from the projected revenue and earnings of the acquired entities.

The following fair value hierarchy table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2013 and December 31, 2012.

	Identical Assets (Level 1)				Observable Inputs (Level 2)				Unobservable Inputs (Level 3)				Total
(In millions of dollars)	09/30/13		12/31/12		09/30/13		12/31/12		09/30/13		12/31/12		09/30/13		12/31/12
Assets:
Financial instruments owned:
Mutual funds(a)	$	146	$	139	$	—	$	—	$	—	$	—	$	146	$	139
Money market funds(b)	23		483		—		—		—		—		23		483
Interest rate swap derivatives(c)	—		—		3		6		—		—		3		6
Total assets measured at fair value	$	169	$	622	$	3	$	6	$	—	$	—	$	172	$	628
Fiduciary Assets:
U.S. Municipal Bonds	$	—	$	—	$	—	$	3	$	—	$	—	$	—	$	3
Money market funds	4		149		—		—		—		—		4		149
Total fiduciary assets measured at fair value	$	4	$	149	$	—	$	3	$	—	$	—	$	4	$	152
Liabilities:
Contingent consideration liability(d)	$	—	$	—	$	—	$	—	$	92	$	63	$	92	$	63
Senior Notes due 2014(e)	—		—		253		256		—		—		253		256
Total liabilities measured at fair value	$	—	$	—	$	253	$	256	$	92	$	63	$	345	$	319

^(a)  Included in other assets in the consolidated balance sheets.

^(b)  Included in cash and cash equivalents in the consolidated balance sheets.

^(c)  Included in other receivables in the consolidated balance sheets.

^(d)  Included in accounts payable and accrued liabilities and other liabilities in the consolidated balance sheets.

^(e)  Included in long term debt in the consolidated balance sheets.

During the nine-month period ended September 30, 2013, there were no assets or liabilities that transferred between Level 1 and Level 2 or between Level 2 and Level 3.

The table below sets forth a summary of the changes in fair value of the Company’s Level 3 liabilities as of September 30, 2013 and 2012 that represent contingent consideration related to acquisitions:

(In millions of dollars)	2013			2012
Balance at January 1,	$	63		$	110
Additions	21			19
Payments	(8		)	(20		)
Revaluation Impact	16			(32		)
Balance at September 30,	$	92		$	77

The fair value of the contingent liability is based on projections of revenue and earnings for the acquired entities that are reassessed on a quarterly basis. As set forth in the table above, based on the Company's ongoing assessment of the fair value of contingent consideration, the Company recorded a net increase in the estimated fair value of such liabilities for prior period acquisitions of $16 million in the nine-month period ended September 30, 2013. A 5% increase in the above mentioned projections would increase the liability by approximately $15 million. A 5% decrease in the above mentioned projections would decrease the liability by approximately $13 million.

Fair Value of Long-term Investments

The Company has certain long-term investments, primarily related to investments in non-publicly traded private equity funds of $12 million and $16 million at September 30, 2013 and December 31, 2012 carried on the cost basis for which there are no readily available market prices. The carrying values of these investments approximates their fair value. Management's estimate of the fair value of these non-publicly traded investments is based on valuation methodologies including estimates from private equity managers of the fair value of underlying investments in private equity funds. The ability to accurately predict future cash flows, revenue or earnings may impact the determination of fair value. The Company monitors these investments for impairment and makes appropriate reductions in carrying values when necessary. If carried at fair value, these investments would be classified as Level 3 in the fair value hierarchy and are included in Other assets in the consolidated balance sheets.

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Acquisitions (Allocation Of Acquisition Costs) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Cash	$ 119	$ 124
Estimated fair value of deferred/contingent consideration	37	19
Total Consideration	156	205
Allocation of purchase price:
Goodwill	6,865	6,679	6,792	6,562
Current Fiscal Period Acquisitions [Member]
Business Acquisition [Line Items]
Cash	119
Estimated fair value of deferred/contingent consideration	37
Total Consideration	156
Allocation of purchase price:
Cash and cash equivalents	16
Accounts receivable, net	11
Property, plant, and equipment	4
Intangible assets	74
Goodwill	93
Other current assets	17
Total assets acquired	215
Current liabilities	26
Other liabilities	33
Total liabilities assumed	59
Net assets acquired	$ 156

XML

Fair Value Measurements (Changes In Fair Value Of Level 3 Liabilities Representing Acquisition Related Contingent Consideration) (Details) (Contingent Consideration [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Contingent Consideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at January 1,	$ 63	$ 110
Additions	21	19
Payments	(8)	(20)
Revaluation Impact	16	(32)
Balance at September 30,	$ 92	$ 77

XML

Nature Of Operations (Details)	9 Months Ended
	Sep. 30, 2013 segment
Segment Reporting Information [Line Items]
Number of business segments	2
Consulting Segment [Member]
Segment Reporting Information [Line Items]
Number of business groups	2

XML

Per Share Data (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Diluted EPS Calculation Continuing Operations

Basic and Diluted EPS Calculation - Continuing Operations	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions, except per share figures)	2013		2012		2013		2012
Net income from continuing operations	$	260	$	246	$	1,072	$	939
Less: Net income attributable to non-controlling interests	6		6		24		21
	$	254	$	240	$	1,048	$	918
Basic weighted average common shares outstanding	549		544		549		544
Dilutive effect of potentially issuable common shares	9		8		9		8
Diluted weighted average common shares outstanding	558		552		558		552
Average stock price used to calculate common stock equivalents	$	42.08	$	33.53	$	39.15	$	32.60

XML

Principles Of Consolidation And Other Matters Principles of Consolidation and Other Matters (Policies)

9 Months Ended

Sep. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Accounting

The consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been omitted pursuant to such rules and regulations for interim filings, although the Company believes that the information and disclosures presented are adequate to make such information and disclosures not misleading.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and cash equivalents primarily consist of certificates of deposit and time deposits, with original maturities of three months or less, and money market funds. The estimated fair value of the Company's cash and cash equivalents approximates their carrying value.

Income Taxes

The Company is routinely examined by tax authorities in the jurisdictions in which it has significant operations. The Company regularly considers the likelihood of assessments in each of the taxing jurisdictions resulting from examinations. When evaluating the potential imposition of penalties, the Company considers a number of relevant factors under penalty statutes, including appropriate disclosure of the tax return position, the existence of legal authority supporting the Company's position, and reliance on the opinion of professional tax advisors.

The Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in tax returns.

Fair Value Hierarchy

Fair Value Hierarchy

The Company has categorized its assets and liabilities that are valued at fair value on a recurring basis into a three-level fair value hierarchy as defined by the FASB. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets and liabilities (Level 1) and lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy, for disclosure purposes, is determined based on the lowest level input that is significant to the fair value measurement.

Assets and liabilities recorded in the consolidated balance sheets at fair value are categorized based on the inputs in the valuation techniques as follows:

Level 1. Assets and liabilities whose values are based on unadjusted quoted prices for identical assets or liabilities in an active market (examples include active exchange-traded equity securities, most U.S. Government and agency securities, money market mutual funds and certain other sovereign government obligations).

Level 2. Assets and liabilities whose values are based on the following:

a) Quoted prices for similar assets or liabilities in active markets;

b) Quoted prices for identical or similar assets or liabilities in non-active markets (examples include corporate and municipal bonds, which trade infrequently);

c) Pricing models whose inputs are observable for substantially the full term of the asset or liability (examples include most over-the-counter derivatives, including interest rate and currency swaps); and

d) Pricing models whose inputs are derived principally from or corroborated by observable market data through correlation or other means for substantially the full asset or liability (for example, certain mortgage loans).

Level 3. Assets and liabilities whose values are based on prices, or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. These inputs reflect management’s own assumptions about the assumptions a market participant would use in pricing the asset or liability (examples include private equity investments, certain commercial mortgage whole loans, and long-dated or complex derivatives including certain foreign exchange options and long-dated options on gas and power).

Valuation Techniques

Mutual Funds and Money Market Funds - Level 1

Investments for which market quotations are readily available are valued at the sale price on their principal exchange, or official closing bid price for certain markets. If no sales are reported, the security is valued at its last reported bid price.

U.S. Municipal Bonds - Level 2

These investments are valued on the basis of valuations furnished by an independent pricing service. Such services or dealers determine valuations for normal institutional-size trading units of such securities using methods based on market transactions for comparable securities and various relationships, generally recognized by institutional traders, between securities.

Interest Rate Swap Derivative - Level 2

The fair value of interest rate swap derivatives is based on the present value of future cash flows at each valuation date resulting from utilization of the swaps, using a constant discount rate of 1.6% compared to discount rates based on projected future yield curves (See Note 12).

Senior Notes due 2014 - Level 2

The fair value of the first $250 million of Senior Notes maturing in 2014 is estimated to be the amortized cost of those notes adjusted by the fair value of the interest rate swap derivative, discussed above. In the first quarter of 2011, the Company entered into two interest rate swaps that effectively convert interest on a portion of its Senior Notes from a fixed rate to a floating rate. The swaps are designated as fair value hedging instruments. The change in the fair value of the swaps is recorded on the balance sheet. The carrying value of the debt related to these swaps is adjusted by an equal amount (See Note 12).

Contingent Consideration Liability - Level 3

Purchase consideration for some acquisitions made by the Company includes contingent consideration arrangements. Contingent consideration arrangements are primarily based on achieving EBITDA and revenue targets over two to four years. The fair value of contingent consideration is estimated as the present value of future cash flows that would result from the projected revenue and earnings of the acquired entities.

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Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Equity [Abstract]
Foreign currency translation adjustments, Pre-Tax	$ 254		$ 171		$ (91)		$ 142
Foreign currency translation adjustments, Tax Expense	(2)		4		(7)		(10)
Foreign currency translation adjustments, Net of Tax	256		167		(84)		152
Unrealized investment gains (losses), Pre-Tax	0		0		(1)		(1)
Unrealized investment gains (losses), Tax Expense	0		(1)		0		1
Unrealized investment gains (losses), Net of Tax	0		1		(1)		(2)
Pension/post-retirement plans:
Prior Service cost, Pre-Tax	(6)	[1]	(8)	[1]	(17)	[1]	(24)	[1]
Prior Service cost, Tax Expense	(2)	[1]	(6)	[1]	(6)	[1]	(11)	[1]
Prior Service cost, Net of Tax	(4)	[1]	(2)	[1]	(11)	[1]	(13)	[1]
Net actuarial loss, Pre-Tax	81	[1]	68	[1]	237	[1]	202	[1]
Net actuarial loss, Tax Expense	26	[1]	52	[1]	83	[1]	95	[1]
Net actuarial loss, Net of Tax	55	[1]	16	[1]	154	[1]	107	[1]
Subtotal, Pre-Tax	75		60		220		178
Subtotal, Tax Expense	24		46		77		84
Subtotal, Net of Tax	51		14		143		94
Foreign currency translation adjustment, Pre-Tax	(106)		(132)		51		(116)
Foreign currency translation adjustment, Tax Expense	(25)		(60)		11		(55)
Foreign currency translation adjustment, Net of Tax	(81)		(72)		40		(61)
Other, Pre-Tax	(6)		0		(6)		0
Other, Tax Expense	(2)		0		(2)		0
Other, Net of Tax	(4)		0		(4)		0
Pension/retiree plans, Pre-Tax	(37)		(72)		265		62
Pension/retiree plans, Tax Expense	(3)		(14)		86		29
Pension/retiree plans, Net of Tax	(34)		(58)		179		33
Other comprehensive income, before tax	217		99		173		203
Other comprehensive income (loss), Tax	(5)		(11)		79		20
Other comprehensive income, net of tax	$ 222		$ 110		$ 94		$ 183

[1] Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense.

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Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2013

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule Of Net Benefit Costs

The components of the net periodic benefit cost for defined benefit and other post-retirement plans are as follows:

Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	63		$	59		$	2	$	1
Interest cost	144			148			2		3
Expected return on plan assets	(227		)	(225		)	—		—
Amortization of prior service credit	(5		)	(4		)	—		(3		)
Recognized actuarial loss	79			67			—		—
Net periodic benefit cost	$	54		$	45		$	4	$	1
Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	188		$	180		$	4	$	3
Interest cost	433			445			8		9
Expected return on plan assets	(680		)	(676		)	—		—
Amortization of prior service credit	(16		)	(14		)	—		(9		)
Recognized actuarial loss	237			201			1		—
Net periodic benefit cost	$	162		$	136		$	13	$	3
U.S. Plans only	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	26		$	23		$	1	$	1
Interest cost	57			57			1		2
Expected return on plan assets	(81		)	(80		)	—		—
Amortization of prior service credit	(4		)	(4		)	—		(3		)
Recognized actuarial loss	52			38			—		—
Net periodic benefit cost	$	50		$	34		$	2	$	—

U.S. Plans only	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	78		$	70		$	2	$	2
Interest cost	171			172			5		6
Expected return on plan assets	(243		)	(241		)	—		—
Amortization of prior service credit	(12		)	(12		)	—		(9		)
Recognized actuarial loss (gain)	156			114			—		(1		)
Net periodic benefit cost (credit)	$	150		$	103		$	7	$	(2	)

Significant non-U.S. Plans only	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	37		$	36		$	1	$	—
Interest cost	87			91			1		1
Expected return on plan assets	(146		)	(145		)	—		—
Amortization of prior service credit	(1		)	—			—		—
Recognized actuarial loss	27			29			—		—
Net periodic benefit cost	$	4		$	11		$	2	$	1

Significant non-U.S. Plans only	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	110		$	110		$	2	$	1
Interest cost	262			273			3		3
Expected return on plan assets	(437		)	(435		)	—		—
Amortization of prior service cost	(4		)	(2		)	—		—
Recognized actuarial loss	81			87			1		1
Net periodic benefit cost	$	12		$	33		$	6	$	5

Schedule of Assumptions Used

The weighted average actuarial assumptions utilized to calculate the net periodic benefit costs for the U.S. and significant non-U.S. defined benefit plans are as follows:

Combined U.S. and significant non-U.S. Plans	Pension Benefits				Postretirement Benefits
September 30,	2013		2012		2013		2012
Weighted average assumptions:
Expected return on plan assets	7.66	%	8.04	%	—	%	—	%
Discount rate	4.38	%	4.91	%	4.32	%	5.05	%
Rate of compensation increase	2.43	%	3.09	%	—	%	—	%

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Principles Of Consolidation And Other Matters Investment Income (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013 Trident II [Member]	Sep. 30, 2012 Trident II [Member]	Sep. 30, 2013 Trident II [Member]	Sep. 30, 2012 Trident II [Member]	Mar. 31, 2013 Trident II [Member] Performance Fees [Member]	Sep. 30, 2013 Trident III [Member] Performance Fees [Member]	Sep. 30, 2013 Trident III [Member] Performance Fees [Member]
Deferred Revenue Arrangement [Line Items]
Equity method income	$ 0	$ (1,000,000)	$ 20,000,000	$ 23,000,000
Recognized deferred performance fees					15,000,000	13,000,000	34,000,000
Deferred performance fees						$ 43,000,000	$ 43,000,000

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Acquisitions (Pro-Forma Information) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Business Combinations [Abstract]
Revenue	$ 2,935	$ 2,883	$ 9,192	$ 9,057
Income from continuing operations	260	247	1,076	947
Net income attributable to the Company	$ 253	$ 242	$ 1,058	$ 926
Basic net income per share:
Basic net income per share - Continuing operations (in dollars per share)	$ 0.46	$ 0.44	$ 1.92	$ 1.70
Basic net income per share - Net income attributable to the Company (in dollars per share)	$ 0.46	$ 0.44	$ 1.93	$ 1.70
Diluted net income per share:
Diluted net income per share - Continuing operations (in dollars per share)	$ 0.46	$ 0.44	$ 1.89	$ 1.68
Diluted net income per share - Net income attributable to the Company (in dollars per share)	$ 0.45	$ 0.44	$ 1.90	$ 1.67

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Dispositions (Tables)

9 Months Ended

Sep. 30, 2013

Discontinued Operations and Disposal Groups [Abstract]

Income Statement Data

Summarized Statements of Income data for discontinued operations is as follows:

	Three Months Ended September 30,					Nine Months Ended September 30,
(In millions of dollars, except per share figures)	2013			2012		2013			2012
Income (loss) from discontinued operations, net of tax	$	—		$	1	$	—		$	(1	)
Disposals of discontinued operations	—			—		(5		)	—
Income tax expense (credit)	1			—		(11		)	—
Disposals of discontinued operations, net of tax	(1		)	—		6			—
Discontinued operations, net of tax	$	(1	)	$	1	$	6		$	(1	)
Discontinued operations, net of tax per share
– Basic	$	—		$	—	$	0.01		$	—
– Diluted	$	—		$	0.01	$	0.01		$	—

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Debt Estimated Fair Value of Significant Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	$ 583	$ 260
Long-term debt	2,623	2,658
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	614	261
Long-term debt	$ 2,828	$ 2,986

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Debt (Gain Or Loss On The Hedged Item And Offsetting Gain Or Loss On Interest Rate Swaps) (Details) (Other Operating Expenses [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain on Notes	$ 3	$ 1
Other operating expenses net income effect	0	0
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss on Swaps	$ (3)	$ (1)

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Supplemental Disclosures To The Consolidated Statements Of Cash Flows (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Supplemental Cash Flow Information [Abstract]
Non-cash issuance of common stock	$ 148	$ 187
Stock-based compensation expense, equity awards	$ 84	$ 117

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Segment Information (Details of Operating Segment Revenue) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended				9 Months Ended				3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended				9 Months Ended				3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended	12 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Operating Segments [Member]	Sep. 30, 2012 Operating Segments [Member]	Sep. 30, 2013 Operating Segments [Member]	Sep. 30, 2012 Operating Segments [Member]	Sep. 30, 2013 Operating Segments [Member] Marsh Insurance Group [Member]	Sep. 30, 2012 Operating Segments [Member] Marsh Insurance Group [Member]	Sep. 30, 2013 Operating Segments [Member] Marsh Insurance Group [Member]	Sep. 30, 2012 Operating Segments [Member] Marsh Insurance Group [Member]	Sep. 30, 2013 Operating Segments [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2012 Operating Segments [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2013 Operating Segments [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2012 Operating Segments [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2013 Operating Segments [Member] Mercer Consulting Group [Member]	Sep. 30, 2012 Operating Segments [Member] Mercer Consulting Group [Member]	Sep. 30, 2013 Operating Segments [Member] Mercer Consulting Group [Member]	Sep. 30, 2012 Operating Segments [Member] Mercer Consulting Group [Member]	Sep. 30, 2013 Operating Segments [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2012 Operating Segments [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2013 Operating Segments [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2012 Operating Segments [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2013 Operating Segments [Member] Risk and Insurance Services Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Risk and Insurance Services Segment [Member]		Sep. 30, 2013 Operating Segments [Member] Risk and Insurance Services Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Risk and Insurance Services Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Risk and Insurance Services Segment [Member] Marsh Insurance Group [Member]	Sep. 30, 2012 Operating Segments [Member] Risk and Insurance Services Segment [Member] Marsh Insurance Group [Member]	Sep. 30, 2012 Operating Segments [Member] Risk and Insurance Services Segment [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2012 Operating Segments [Member] Risk and Insurance Services Segment [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2013 Operating Segments [Member] Consulting Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Consulting Segment [Member]		Sep. 30, 2013 Operating Segments [Member] Consulting Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Consulting Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Consulting Segment [Member] Mercer Consulting Group [Member]	Sep. 30, 2012 Operating Segments [Member] Consulting Segment [Member] Mercer Consulting Group [Member]	Sep. 30, 2012 Operating Segments [Member] Consulting Segment [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2012 Operating Segments [Member] Consulting Segment [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2013 Intersegment Eliminations [Member]	Sep. 30, 2012 Intersegment Eliminations [Member]	Sep. 30, 2013 Intersegment Eliminations [Member]	Sep. 30, 2012 Intersegment Eliminations [Member]	Sep. 30, 2013 Intersegment Eliminations [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Intersegment Eliminations [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2013 Intersegment Eliminations [Member] Risk and Insurance Services Segment [Member]	Dec. 31, 2012 Intersegment Eliminations [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2013 Intersegment Eliminations [Member] Consulting Segment [Member]	Sep. 30, 2012 Intersegment Eliminations [Member] Consulting Segment [Member]	Sep. 30, 2013 Intersegment Eliminations [Member] Consulting Segment [Member]	Sep. 30, 2012 Intersegment Eliminations [Member] Consulting Segment [Member]	Sep. 30, 2013 Corporate, Non-Segment [Member]	Sep. 30, 2012 Corporate, Non-Segment [Member]	Sep. 30, 2013 Corporate, Non-Segment [Member]	Sep. 30, 2012 Corporate, Non-Segment [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member] Marsh Insurance Group [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member] Marsh Insurance Group [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Consulting Segment [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Consulting Segment [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Consulting Segment [Member] Mercer Consulting Group [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Consulting Segment [Member] Mercer Consulting Group [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Consulting Segment [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Operating Segments [Member] Consulting Segment [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Intersegment Eliminations [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Intersegment Eliminations [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Corporate, Non-Segment [Member]	Sep. 30, 2012 Scenario, Previously Reported [Member] Corporate, Non-Segment [Member]	Sep. 30, 2012 Restatement Adjustment [Member]	Sep. 30, 2012 Restatement Adjustment [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member] Marsh Insurance Group [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member] Marsh Insurance Group [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Risk and Insurance Services Segment [Member] Guy Carpenter Reinsurance Group [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Consulting Segment [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Consulting Segment [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Consulting Segment [Member] Mercer Consulting Group [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Consulting Segment [Member] Mercer Consulting Group [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Consulting Segment [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Operating Segments [Member] Consulting Segment [Member] Oliver Wyman Group Consulting Group [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Intersegment Eliminations [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Intersegment Eliminations [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Corporate, Non-Segment [Member]	Sep. 30, 2012 Restatement Adjustment [Member] Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue	$ 2,932	$ 2,845	$ 9,146	$ 8,922	$ 2,941	$ 2,856	$ 9,172	$ 8,955	$ 1,241	$ 1,201	$ 4,038	$ 3,895	$ 263	$ 250	$ 925	$ 886	$ 1,072	$ 1,054	$ 3,157	$ 3,086	$ 365	$ 351	$ 1,052	$ 1,088	$ 1,504	[1]	$ 1,451	[1]	$ 4,963	[2]	$ 4,781	[2]	$ 1,201	$ 3,895	$ 250	$ 886	$ 1,437	[3]	$ 1,405	[3]	$ 4,209	[4]	$ 4,174	[4]	$ 1,054	$ 3,086	$ 351	$ 1,088	$ (9)	$ (11)	$ (26)	$ (33)	$ 1	$ 1	$ 4	$ 4	$ 8	$ 10	$ 22	$ 29					$ 2,845	$ 8,922	$ 2,856	$ 8,955	$ 1,510	$ 4,955	$ 1,260	$ 4,069	$ 250	$ 886	$ 1,346	$ 4,000	$ 995	$ 2,912	$ 351	$ 1,088	$ (11)	$ (33)			$ 0	$ 0	$ 0	$ 0	$ (59)	$ (174)	$ (59)	$ (174)	$ 0	$ 0	$ 59	$ 174	$ 59	$ 174	$ 0	$ 0	$ 0	$ 0
Operating Income (Loss)	$ 404	$ 378	$ 1,588	$ 1,423	$ 454	$ 427	$ 1,735	$ 1,576																	$ 222		$ 222		$ 1,111		$ 1,024						$ 232		$ 205		$ 624		$ 552																		$ (50)	$ (49)	$ (147)	$ (153)	$ 378	$ 1,423	$ 427	$ 1,576	$ 234	$ 1,052					$ 193	$ 524							$ (49)	$ (153)	$ 0	$ 0	$ 0	$ 0	$ (12)	$ (28)					$ 12	$ 28							$ 0	$ 0

[1] Includes inter-segment revenue of $1 million in both 2013 and 2012, interest income on fiduciary funds of $7 million and $10 million in 2013 and 2012, respectively, and equity method income of $2 million in 2013.

[2] Includes inter-segment revenue of $4 million in both 2013 and 2012, interest income on fiduciary funds of $21 million and $31 million in 2013 and 2012, respectively, and equity method income of $10 million in both 2013 and 2012.

[3] Includes inter-segment revenue of $8 million and $10 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $1 million in both 2013 and 2012.

[4] Includes inter-segment revenue of $22 million and $29 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2013 and 2012, respectively.

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New Accounting Guidance

9 Months Ended

Sep. 30, 2013

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Accounting Guidance

New Accounting Guidance

In July 2013 the FASB issued new accounting guidance related to the presentation of unrecognized tax benefits as a reduction to a deferred tax asset for a net operating loss carry-forward, a similar tax loss, or a tax credit carry-forward. However, to the extent a net operating loss carry-forward, a similar tax loss, or a tax credit carry-forward is not available at the reporting date under the tax law of the applicable jurisdiction, the unrecognized tax benefit shall be presented in the financial statement as a liability and shall not be combined with deferred tax assets. The guidance is effective for fiscal years beginning after December 15, 2013. The adoption of this new guidance will affect balance sheet classification and footnote disclosure only and is not expected to have a material impact on the Company's financial statements.

In February 2013 the FASB issued new accounting guidance that adds new disclosure requirements for items reclassified out of accumulated other comprehensive income. The Company implemented this new guidance for the reporting period ended March 31, 2013. Other than enhanced disclosure, the adoption of this new guidance did not have a material effect on the Company's financial statements.

In the first quarter of 2012, the Company adopted new accounting guidance related to the presentation of Comprehensive Income. The new guidance gives an entity the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In both choices, an entity is required to present each component of net income along with total net income, each component of other comprehensive income along with a total for other comprehensive income, and a total amount for comprehensive income. The guidance eliminates the option to present the components of other comprehensive income as part of the statement of changes in stockholders’ equity. The guidance did not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. Other than enhanced disclosure, adoption of this new guidance did not have a material effect on the Company's financial statements.

In January 2012, the Company adopted guidance issued by the FASB on accounting and disclosure requirements related to fair value measurements. The guidance expands the disclosures on Level 3 inputs by requiring quantitative disclosure of the unobservable inputs and assumptions, as well as description of the valuation processes, the sensitivity of the fair value to changes in unobservable inputs and the hierarchy classification, valuation techniques, and inputs for assets and liabilities whose fair value is only disclosed in the footnotes.

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Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating cash flows:
Net income before non-controlling interests	$ 1,078	$ 938
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software	213	201
Amortization of intangible assets	53	53
Intangible asset impairment	5	8
Adjustments to acquisition related contingent consideration liability	16	(32)
Provision for deferred income taxes	137	18
Gain on investments	(58)	(19)
Loss on disposition of assets	1	13
Stock option expense	15	23
Changes in assets and liabilities:
Net receivables	(229)	(148)
Other current assets	(71)	19
Other assets	(564)	(204)
Accounts payable and accrued liabilities	47	(208)
Accrued compensation and employee benefits	(279)	(176)
Accrued income taxes	39	88
Other liabilities	174	201
Effect of exchange rate changes	(2)	(25)
Net cash provided by operations	575	750
Financing cash flows:
Purchase of treasury shares	(400)	(180)
Proceeds from debt	546	248
Repayments of debt	(257)	(257)
Shares withheld for taxes on vested units – treasury shares	(74)	(92)
Issuance of common stock from treasury shares	254	151
Payments of contingent consideration for acquisitions	(8)	(20)
Distributions of non-controlling interests	(17)	(5)
Dividends paid	(394)	(369)
Net cash used for financing activities	(350)	(524)
Investing cash flows:
Capital expenditures	(288)	(249)
Net sales of long-term investments	90	26
Proceeds from sales of fixed assets	2	4
Dispositions	3	2
Acquisitions	(108)	(153)
Other, net	2	1
Net cash used for investing activities	(299)	(369)
Effect of exchange rate changes on cash and cash equivalents	(53)	74
Decrease in cash and cash equivalents	(127)	(69)
Cash and cash equivalents at beginning of period	2,301	2,113
Cash and cash equivalents at end of period	$ 2,174	$ 2,044

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Consolidated Statements Of Equity (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Dividends declared per share (in dollars per share)	$ 0.96	$ 0.90
Dividend equivalents declared per share (in dollars per share)	$ 0.96	$ 0.90
Balance, end of period	$ 7,120	$ 6,580

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Fiduciary Assets And Liabilities

9 Months Ended

Sep. 30, 2013

Fiduciary Assets And Liabilities [Abstract]

Fiduciary Assets And Liabilities

Fiduciary Assets and Liabilities

In its capacity as an insurance broker or agent, the Company collects premiums from insureds and, after deducting its commissions, remits the premiums to the respective insurance underwriters. The Company also collects claims or refunds from underwriters on behalf of insureds. Unremitted insurance premiums and claims proceeds are held by the Company in a fiduciary capacity. Risk and Insurance Services revenue includes interest on fiduciary funds of $21 million and $31 million for the nine-month periods ended September 30, 2013 and 2012, respectively. The Consulting segment recorded fiduciary interest income of $3 million and $2 million in the nine-month periods ended September 30, 2013 and 2012, respectively. Since fiduciary assets are not available for corporate use, they are shown in the consolidated balance sheets as an offset to fiduciary liabilities.

Net uncollected premiums and claims and the related payables amounted to $9 billion at September 30, 2013 and $9.1 billion atDecember 31, 2012. The Company is not a principal to the contracts under which the right to receive premiums or the right to receive reimbursement of insured losses arises. Net uncollected premiums and claims and the related payables are, therefore, not assets and liabilities of the Company and are not included in the accompanying consolidated balance sheets.

In certain instances, the Company advances premiums, refunds or claims to insurance underwriters or insureds prior to collection. These advances are made from corporate funds and are reflected in the accompanying consolidated balance sheets as receivables.

Mercer manages approximately $17 billion of assets in trusts or funds for which Mercer’s management or trustee fee is considered a variable interest. Mercer is not the primary beneficiary of these trusts or funds. Mercer’s only variable interest in any of these trusts or funds is its unpaid fees, if any. Mercer’s maximum exposure to loss of its interests is, therefore, limited to collection of its fees.

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Nature Of Operations

9 Months Ended

Sep. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature Of Operations

Nature of Operations

Marsh & McLennan Companies, Inc. (“the Company”), a global professional services firm, is organized based on the different services that it offers. Under this organizational structure, the Company’s two business segments are Risk and Insurance Services and Consulting.

The Risk and Insurance Services segment provides risk management and insurance broking, reinsurance broking and insurance program management services for businesses, public entities, insurance companies, associations, professional services organizations, and private clients. The Company conducts business in this segment through Marsh and Guy Carpenter.

The Company conducts business in its Consulting segment through two main business groups. Mercer provides consulting expertise, advice, services and solutions in the areas of talent, health, retirement and investments. Oliver Wyman Group provides specialized management, economic and brand consulting services.

Acquisitions impacting the Risk and Insurance Services and Consulting segments are discussed in Note 7 to the consolidated financial statements.

The Company has "continuing involvement" in certain Corporate Advisory and Restructuring businesses (“CARG”), that were disposed of in 2008. The run-off of the CARG business is being managed by the Company’s corporate departments and financial results of these entities are included in “Corporate” for segment reporting purposes.

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Fiduciary Assets And Liabilities (Details) (USD $)			9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Risk and Insurance Services Segment [Member]	Sep. 30, 2013 Consulting Segment [Member]	Sep. 30, 2012 Consulting Segment [Member]	Sep. 30, 2013 Consulting Segment [Member]	Sep. 30, 2012 Consulting Segment [Member]	Sep. 30, 2013 Mercer Consulting Group [Member]
Fiduciary Assets and Liabilities [Line Items]
Interest on fiduciary funds			$ 21,000,000	$ 31,000,000	$ 1,000,000	$ 1,000,000	$ 3,000,000	$ 2,000,000
Net uncollected premiums and claims receivable and payable	9,000,000,000	9,100,000,000
Assets in trusts or funds for management or trustee fee									$ 17,000,000,000

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Supplemental Disclosures To The Consolidated Statements Of Cash Flows (Tables)

9 Months Ended

Sep. 30, 2013

Supplemental Cash Flow Information [Abstract]

Additional Information Concerning Acquisitions, Interest and Income Taxes Paid

The following schedule provides additional information concerning acquisitions, interest and income taxes paid for the nine-month periods ended September 30, 2013 and 2012.

(In millions of dollars)	2013			2012
Assets acquired, excluding cash	$	199		$	160
Liabilities assumed	(59		)	(39		)
Contingent/deferred purchase consideration	(37		)	(19		)
Net cash outflow for current year acquisitions	103			102
Purchase of other intangibles	1			—
Deferred purchase consideration from prior years' acquisitions	4			51
Net cash outflow for acquisitions	$	108		$	153

(In millions of dollars)	2013		2012
Interest paid	$	140	$	150
Income taxes paid	$	258	$	237

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Goodwill And Other Intangibles (Tables)

9 Months Ended

Sep. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

Changes in the carrying amount of goodwill are as follows:

September 30,
(In millions of dollars)	2013			2012
Balance as of January 1, as reported	$	6,792		$	6,562
Goodwill acquired	93			126
Other adjustments(a)	(20		)	(9		)
Balance at September 30,	$	6,865		$	6,679

^(a)  Primarily reflects the impact of foreign exchange in each period.

Amortized Intangible Assets

Amortized intangible assets consist of the cost of client lists, client relationships and trade names acquired. The gross cost and accumulated amortization are as follows:

	September 30, 2013						December 31, 2012
(In millions of dollars)	Gross Cost		Accumulated Amortization		Net Carrying Amount		Gross Cost		Accumulated Amortization		Net Carrying Amount
Amortized intangibles	$	887	$	399	$	488	$	814	$	345	$	469

Estimated Future Aggregate Amortization Expense

Aggregate amortization expense for both nine months ended September 30, 2013 and 2012 was $53 million and the estimated future aggregate amortization expense is as follows:

For the Years Ending December 31,
(In millions of dollars)	Estimated Expense
2013 (excludes amortization through September 30, 2013)	$	18
2014	71
2015	69
2016	61
2017	51
Subsequent years	218
	$	488

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Segment Information (Tables)

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Selected Information And Details For MMC's Operating Segments

Selected information about the Company’s operating segments for the three-and nine-month periods ended September 30, 2013 and 2012 are as follows:

	Three Months Ended September 30,							Nine Months Ended September 30,
(In millions of dollars)	Revenue				Operating Income (Loss)			Revenue				Operating Income (Loss)
2013 –
Risk and Insurance Services	$	1,504		(a)	$	222		$	4,963		(c)	$	1,111
Consulting	1,437			(b)	232			4,209			(d)	624
Total Operating Segments	2,941				454			9,172				1,735
Corporate / Eliminations	(9		)		(50		)	(26		)		(147		)
Total Consolidated	$	2,932			$	404		$	9,146			$	1,588
2012–
Risk and Insurance Services	$	1,451		(a)	$	222		$	4,781		(c)	$	1,024
Consulting	1,405			(b)	205			4,174			(d)	552
Total Operating Segments	2,856				427			8,955				1,576
Corporate / Eliminations	(11		)		(49		)	(33		)		(153		)
Total Consolidated	$	2,845			$	378		$	8,922			$	1,423

^(a)  Includes inter-segment revenue of $1 million in both 2013 and 2012, interest income on fiduciary funds of $7 million and $10 million in 2013 and 2012, respectively, and equity method income of $2 million in 2013.

^(b)  Includes inter-segment revenue of $8 million and $10 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $1 million in both 2013 and 2012.

^(c)  Includes inter-segment revenue of $4 million in both 2013 and 2012, interest income on fiduciary funds of $21 million and $31 million in 2013 and 2012, respectively, and equity method income of $10 million in both 2013 and 2012.

^(d)  Includes inter-segment revenue of $22 million and $29 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2013 and 2012, respectively.

Details of Operating Segment Revenue

Details of operating segment revenue for the three and nine-month periods ended September 30, 2013 and 2012 are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(In millions of dollars)	2013			2012			2013			2012
Risk and Insurance Services
Marsh	$	1,241		$	1,201		$	4,038		$	3,895
Guy Carpenter	263			250			925			886
Total Risk and Insurance Services	1,504			1,451			4,963			4,781
Consulting
Mercer	1,072			1,054			3,157			3,086
Oliver Wyman Group	365			351			1,052			1,088
Total Consulting	1,437			1,405			4,209			4,174
Total Operating Segments	2,941			2,856			9,172			8,955
Corporate/ Eliminations	(9		)	(11		)	(26		)	(33		)
Total	$	2,932		$	2,845		$	9,146		$	8,922

Impact of Transfer on Prior Year's Segment Information

The following reflects the impact of the transfer discussed above on prior year's segment information:

	Three Months Ended September 30, 2012									Nine Months Ended September 30, 2012
(In millions of dollars)	As Reported			Reclassification			Current Presentation			As Reported			Reclassification			Current Presentation
Revenue
Risk and Insurance Services
Marsh	$	1,260		$	(59	)	$	1,201		$	4,069		$	(174	)	$	3,895
Guy Carpenter	250			—			250			886			—			886
Total Risk and Insurance Services	1,510			(59		)	1,451			4,955			(174		)	4,781
Consulting
Mercer	995			59			1,054			2,912			174			3,086
Oliver Wyman Group	351			—			351			1,088			—			1,088
Total Consulting	1,346			59			1,405			4,000			174			4,174
Total Operating Segments	2,856			—			2,856			8,955			—			8,955
Corporate Eliminations	(11		)	—			(11		)	(33		)	—			(33		)
Total Revenue	$	2,845		$	—		$	2,845		$	8,922		$	—		$	8,922
Operating Income
Risk and Insurance Services	$	234		$	(12	)	$	222		$	1,052		$	(28	)	$	1,024
Consulting	193			12			205			524			28			552
Total Operating Segments	427			—			427			1,576			—			1,576
Corporate Eliminations	(49		)	—			(49		)	(153		)	—			(153		)
Total Consolidated	$	378		$	—		$	378		$	1,423		$	—		$	1,423

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Fair Value Measurements (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended				9 Months Ended				9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2012 interest_rate_swap	Feb. 28, 2011 interest_rate_swap	Sep. 30, 2013 Minimum [Member]	Sep. 30, 2013 Maximum [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2014 [Member]	Feb. 28, 2011 Senior Debt Obligations Due 2014 [Member]	Sep. 30, 2013 Interest Rate Swap [Member]	Sep. 30, 2013 Private Equity Funds [Member]	Dec. 31, 2012 Private Equity Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value interest rate swap discount rate										1.60%
Fair value interest rate swap derivatives								$ 250,000,000	$ 250,000,000
Number of interest rate swaps to convert fixed interest rate on notes to floating rate				2	2
Revenue target period (in years)						2 years	4 years
Adjustments to acquisition related contingent consideration liability		16,000,000	(32,000,000)
Increase in fair value of contingent consideration due to 5% increase in projections	15,000,000
Decrease in fair value of contingent consideration due to 5% decrease in projections	13,000,000
Long-term investments, cost basis											$ 12,000,000	$ 16,000,000

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Dispositions (Income Statement Data) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Discontinued Operations and Disposal Groups [Abstract]
Income (loss) from discontinued operations, net of tax		$ 1		$ (1)
Disposals of discontinued operations	0	0	(5)	0
Income tax expense (credit)	1	0	(11)	0
Disposals of discontinued operations, net of tax	(1)	0	6	0
Discontinued operations, net of tax	$ (1)	$ 1	$ 6	$ (1)
Discontinued operations, net of tax
- Basic (in dollars per share)	$ 0.00	$ 0.00	$ 0.01	$ 0.00
- Diluted (in dollars per share)	$ 0.00	$ 0.01	$ 0.01	$ 0.00

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Other Comprehensive Income (Loss) (Schedule of Components of Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of January 1, 2013			$ (3,307)
Other comprehensive income (loss) before reclassifications			(49)
Amounts reclassified from accumulated other comprehensive income			143
Other comprehensive income, net of tax	222	110	94	183
Balance as of September 30, 2013	(3,213)		(3,213)
Unrealized Investment Gains [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of January 1, 2013			4
Other comprehensive income (loss) before reclassifications			(1)
Amounts reclassified from accumulated other comprehensive income			0
Other comprehensive income, net of tax			(1)
Balance as of September 30, 2013	3		3
Pension/Postretirement Plans Gains (Losses) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of January 1, 2013			(3,451)
Other comprehensive income (loss) before reclassifications			36
Amounts reclassified from accumulated other comprehensive income			143
Other comprehensive income, net of tax			179
Balance as of September 30, 2013	(3,272)		(3,272)
Foreign Currency Translation Adjustments [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of January 1, 2013			140
Other comprehensive income (loss) before reclassifications			(84)
Amounts reclassified from accumulated other comprehensive income			0
Other comprehensive income, net of tax			(84)
Balance as of September 30, 2013	$ 56		$ 56

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Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income before non-controlling interests	$ 259	$ 247	$ 1,078	$ 938
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	254	171	(91)	142
Unrealized investment loss	0	0	(1)	(1)
Gain (loss) related to pension/post-retirement plans	(37)	(72)	265	62
Other comprehensive income, before tax	217	99	173	203
Tax expense (benefit) on other comprehensive income	(5)	(11)	79	20
Other comprehensive income, net of tax	222	110	94	183
Comprehensive income	481	357	1,172	1,121
Less: comprehensive income attributable to non-controlling interest	6	6	24	21
Comprehensive income attributable to the Company	$ 475	$ 351	$ 1,148	$ 1,100

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Other Comprehensive Income (Loss)

9 Months Ended

Sep. 30, 2013

Equity [Abstract]

Other Comprehensive Income (Loss)

Other Comprehensive Income (Loss)

The changes in the balances of each component of Accumulated Other Comprehensive Income ("AOCI") for the nine-month period ended September 30, 2013, including amounts reclassified out of AOCI, are as follows:

(In millions of dollars)	Unrealized Investment Gains			Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments			Total
Balance as of January 1, 2013	$	4		$	(3,451	)	$	140		$	(3,307	)
Other comprehensive income (loss) before reclassifications	(1		)	36			(84		)	(49		)
Amounts reclassified from accumulated other comprehensive income	—			143			—			143
Net current period other comprehensive income (loss)	(1		)	179			(84		)	94
Balance as of September 30, 2013	$	3		$	(3,272	)	$	56		$	(3,213	)

The components of other comprehensive income (loss) for the three and nine-month periods ended September 30, 2013 and 2012 are as follows:

Three Months Ended September 30,	2013									2012
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	254		$	(2	)	$	256		$	171		$	4		$	167
Unrealized investment gains (losses)	—			—			—			—			(1		)	1
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(6		)	(2		)	(4		)	(8		)	(6		)	(2		)
Net actuarial losses (a)	81			26			55			68			52			16
Subtotal	75			24			51			60			46			14
Foreign currency translation adjustments	(106		)	(25		)	(81		)	(132		)	(60		)	(72		)
Other	(6		)	(2		)	(4		)	—			—			—
Pension/post-retirement plans losses	(37		)	(3		)	(34		)	(72		)	(14		)	(58		)
Other comprehensive income (loss)	$	217		$	(5	)	$	222		$	99		$	(11	)	$	110

(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense.

Nine Months Ended September 30,	2013									2012
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	(91	)	$	(7	)	$	(84	)	$	142		$	(10	)	$	152
Unrealized investment gains (losses)	(1		)	—			(1		)	(1		)	1			(2		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(17		)	(6		)	(11		)	(24		)	(11		)	(13		)
Net actuarial losses (a)	237			83			154			202			95			107
Subtotal	220			77			143			178			84			94
Foreign currency translation adjustments	51			11			40			(116		)	(55		)	(61		)
Other	(6		)	(2		)	(4		)	—			—			—
Pension/post-retirement plans losses	265			86			179			62			29			33
Other comprehensive income	$	173		$	79		$	94		$	203		$	20		$	183

(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense.

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Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2010
Statement of Financial Position [Abstract]
Fixed assets, accumulated depreciation and amortization	$ 1,611	$ 1,582
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	6,000,000	6,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 1.000	$ 1
Common stock, shares authorized	1,600,000,000	1,600,000,000
Common stock, shares issued	560,641,640	560,641,640
Treasury shares, shares	13,338,019	15,133,774

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Retirement Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended				3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 U.K. Pension Plan [Member]	Sep. 30, 2013 Canadian Pension Plan [Member]	Sep. 30, 2013 Pension Benefits [Member]	Sep. 30, 2013 Equity Funds [Member] U.S. Plans [Member]	Sep. 30, 2013 Equity Funds [Member] U.K. Plan [Member]	Sep. 30, 2013 Fixed Income Funds [Member] U.S. Plans [Member]	Sep. 30, 2013 Fixed Income Funds [Member] U.K. Plan [Member]	Sep. 30, 2013 Non-U.S. Plans [Member] U.K. Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan, equities, prior period					58.00%	53.00%	42.00%	47.00%
Actual asset allocation percentage of equity					62.00%	50.00%	38.00%	50.00%
Concentration Risk, Percentage									83.00%
Contributions to U.S. non qualified and non-U.S. Pension Plan	$ 552	$ 250	$ 70
Expected contribution during remainder of 2013				$ 102

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Consolidated Statements Of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue	$ 2,932	$ 2,845	$ 9,146	$ 8,922
Expense:
Compensation and benefits	1,824	1,760	5,393	5,332
Other operating expenses	704	707	2,165	2,167
Operating expenses	2,528	2,467	7,558	7,499
Operating income	404	378	1,588	1,423
Interest income	5	6	13	18
Interest expense	(40)	(44)	(124)	(135)
Investment income	14	(4)	58	20
Income before income taxes	383	336	1,535	1,326
Income tax expense	123	90	463	387
Income from continuing operations	260	246	1,072	939
Discontinued operations, net of tax	(1)	1	6	(1)
Net income before non-controlling interests	259	247	1,078	938
Less: Net income attributable to non-controlling interests	6	6	24	21
Net income attributable to the Company	$ 253	$ 241	$ 1,054	$ 917
Basic net income per share
- Continuing operations	$ 0.46	$ 0.44	$ 1.91	$ 1.68
– Net income attributable to the Company	$ 0.46	$ 0.44	$ 1.92	$ 1.68
Diluted net income per share
- Continuing operations	$ 0.45	$ 0.43	$ 1.88	$ 1.66
– Net income attributable to the Company	$ 0.45	$ 0.44	$ 1.89	$ 1.66
Average number of shares outstanding
- Basic (in shares)	549	544	549	544
- Diluted (in shares)	558	552	558	552
Shares outstanding at September 30	547	544	547	544

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Goodwill And Other Intangibles (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended				3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013 Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Risk and Insurance Services Segment [Member]	Sep. 30, 2013 Consulting Segment [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 6,865	$ 6,679	$ 6,792	$ 6,562	$ 4,700		$ 2,200
Intangible asset impairment	5	8			5	8
Aggregate amortization expense	$ 53	$ 53

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Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2013

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The changes in the balances of each component of Accumulated Other Comprehensive Income ("AOCI") for the nine-month period ended September 30, 2013, including amounts reclassified out of AOCI, are as follows:

(In millions of dollars)	Unrealized Investment Gains			Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments			Total
Balance as of January 1, 2013	$	4		$	(3,451	)	$	140		$	(3,307	)
Other comprehensive income (loss) before reclassifications	(1		)	36			(84		)	(49		)
Amounts reclassified from accumulated other comprehensive income	—			143			—			143
Net current period other comprehensive income (loss)	(1		)	179			(84		)	94
Balance as of September 30, 2013	$	3		$	(3,272	)	$	56		$	(3,213	)

Schedule of Components of Comprehensive Income (Loss)

The components of other comprehensive income (loss) for the three and nine-month periods ended September 30, 2013 and 2012 are as follows:

Three Months Ended September 30,	2013									2012
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	254		$	(2	)	$	256		$	171		$	4		$	167
Unrealized investment gains (losses)	—			—			—			—			(1		)	1
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(6		)	(2		)	(4		)	(8		)	(6		)	(2		)
Net actuarial losses (a)	81			26			55			68			52			16
Subtotal	75			24			51			60			46			14
Foreign currency translation adjustments	(106		)	(25		)	(81		)	(132		)	(60		)	(72		)
Other	(6		)	(2		)	(4		)	—			—			—
Pension/post-retirement plans losses	(37		)	(3		)	(34		)	(72		)	(14		)	(58		)
Other comprehensive income (loss)	$	217		$	(5	)	$	222		$	99		$	(11	)	$	110

(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense.

Nine Months Ended September 30,	2013									2012
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	(91	)	$	(7	)	$	(84	)	$	142		$	(10	)	$	152
Unrealized investment gains (losses)	(1		)	—			(1		)	(1		)	1			(2		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(17		)	(6		)	(11		)	(24		)	(11		)	(13		)
Net actuarial losses (a)	237			83			154			202			95			107
Subtotal	220			77			143			178			84			94
Foreign currency translation adjustments	51			11			40			(116		)	(55		)	(61		)
Other	(6		)	(2		)	(4		)	—			—			—
Pension/post-retirement plans losses	265			86			179			62			29			33
Other comprehensive income	$	173		$	79		$	94		$	203		$	20		$	183

(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense.

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Claims, Lawsuits And Other Contingencies

9 Months Ended

Sep. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Claims, Lawsuits, and Other Contingencies

Claims, Lawsuits and Other Contingencies

Errors and Omissions Claims

The Company and its subsidiaries, particularly Marsh and Mercer, are subject to a significant number of claims, lawsuits and proceedings in the ordinary course of business. Such claims and lawsuits consist principally of alleged errors and omissions in connection with the performance of professional services, including the placement of insurance, the provision of actuarial services for corporate and public sector clients, and the provision of consulting services relating to the drafting and interpretation of trust deeds and other documentation governing pension plans. Certain of these claims, particularly in the U.S. and the U.K., seek damages, including punitive and treble damages, in amounts that could, if awarded, be significant. In establishing liabilities for errors and omissions claims in accordance with FASB ASC Subtopic No. 450-20 (Contingencies-Loss Contingencies), the Company utilizes case level reviews by inside and outside counsel and an internal actuarial analysis to estimate potential losses. A liability is established when a loss is both probable and reasonably estimable. The liability is reviewed quarterly and adjusted as developments warrant. In many cases, the Company has not recorded a liability, other than for legal fees to defend the claim, because we are unable, at the present time, to make a determination that a loss is both probable and reasonably estimable.

To the extent that expected losses exceed our deductible in any policy year, the Company also records an asset for the amount that we expect to recover under any available third-party insurance programs. The Company has varying levels of third-party insurance coverage, with policy limits and coverage terms varying significantly by policy year.

Governmental Inquiries and Related Claims

In January 2005, the Company and its subsidiary Marsh Inc. entered into a settlement agreement with the New York State Attorney General (“NYAG”) and the New York State Insurance Department to settle a civil complaint and related citation regarding Marsh's use of market service agreements with various insurance companies. The parties subsequently entered into an amended and restated settlement agreement in February 2010 that restored a level playing field for Marsh.

Numerous private party lawsuits based on similar allegations to those made in the NYAG complaint were commenced against the Company, one or more of its subsidiaries, and their current and former directors and officers. The vast majority of these matters have been resolved. Two actions instituted by policyholders against the Company, Marsh and certain Marsh subsidiaries remain pending.

Our activities are regulated under the laws of the United States and its various states, the European Union and its member states, and the other jurisdictions in which the Company operates. In the ordinary course of business the Company is also subject to subpoenas, investigations, lawsuits and/or other regulatory actions undertaken by governmental authorities. In this regard, Mercer recently received a subpoena from the New York Department of Financial Services in connection with a review of New York’s public pension funds.

Other Contingencies-Guarantees

In connection with its acquisition of U.K.-based Sedgwick Group in 1998, the Company acquired several insurance underwriting businesses that were already in run-off, including River Thames Insurance Company Limited (“River Thames”), which the Company sold in 2001. Sedgwick guaranteed payment of claims on certain policies underwritten through the Institute of London Underwriters (the “ILU”) by River Thames. The policies covered by this guarantee are reinsured up to £40 million by a related party of River Thames. Payment of claims under the reinsurance agreement is collateralized by segregated assets held in a trust. As of September 30, 2013, the reinsurance coverage exceeded the best estimate of the projected liability of the policies covered by the guarantee. To the extent River Thames or the reinsurer is unable to meet its obligations under those policies, a claimant may seek to recover from us under the guarantee.

From 1980 to 1983, the Company owned indirectly the English & American Insurance Company (“E&A”), which was a member of the ILU. The ILU required the Company to guarantee a portion of E&A's obligations. After E&A became insolvent in 1993, the ILU agreed to discharge the guarantee in exchange for the Company's agreement to post an evergreen letter of credit that is available to pay claims by policyholders on certain E&A policies issued through the ILU and incepting between July 3, 1980 and October 6, 1983. Certain claims have been paid under the letter of credit and we anticipate that additional claimants may seek to recover against the letter of credit.

Kroll-related Matters

Under the terms of a stock purchase agreement with Altegrity, Inc. (“Altegrity”) related to Altegrity's purchase of Kroll from the Company in August 2010, a copy of which is attached as an exhibit to the Company's Quarterly Report on Form 10-Q for the period ended June 30, 2010, the Company agreed to provide a limited indemnity to Altegrity with respect to certain Kroll-related litigation and regulatory matters.

**********

The pending proceedings and other matters described in this Note 15 on Claims, Lawsuits and Other Contingencies may expose the Company or its subsidiaries to liability for significant monetary damages and other forms of relief. Where a loss is both probable and reasonably estimable, the Company establishes liabilities in accordance with FASB ASC Subtopic No. 450-20 (Contingencies-Loss Contingencies). Except as described above, the Company is not able at this time to provide a reasonable estimate of the range of possible loss attributable to these matters or the impact they may have on the Company's consolidated results of operations, financial position or cash flows. This is primarily because these matters are still developing and involve complex issues subject to inherent uncertainty. Adverse determinations in one or more of these matters could have a material impact on the Company's consolidated results of operations, financial condition or cash flows in a future period.

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Supplemental Disclosures To The Consolidated Statements Of Cash Flows (Additional Information Concerning Acquisitions, Interest And Income Taxes Paid) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Supplemental Cash Flow Information [Abstract]
Assets acquired, excluding cash	$ 199	$ 160
Liabilities assumed	(59)	(39)
Contingent/deferred purchase consideration	(37)	(19)
Net cash outflow for current year acquisitions	103	102
Purchase of other intangibles	1	0
Deferred purchase consideration from prior years' acquisitions	4	51
Net cash outflow for acquisitions	108	153
Interest paid	140	150
Income taxes paid	$ 258	$ 237

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Goodwill And Other Intangibles (Estimated Future Aggregate Amortization Expense) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
2013 (excludes amortization through September 30, 2013)	$ 18
2014	71
2015	69
2016	61
2017	51
Subsequent years	218
Net Carrying Amount	$ 488	$ 469

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Restructuring Costs (Restructuring Activities) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Restructuring Reserve [Roll Forward]
Liability at beginning of period	$ 170	$ 181
Amounts Accrued	17	78
Cash Paid	(58)	(88)
Other	1	(1)
Liability at end of period	130	170
Severance [Member]
Restructuring Reserve [Roll Forward]
Liability at beginning of period	36	27
Amounts Accrued	8	46
Cash Paid	(30)	(38)
Other	(2)	1
Liability at end of period	12	36
Future Rent Under Non-Cancelable Leases and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Liability at beginning of period	134	154
Amounts Accrued	9	32
Cash Paid	(28)	(50)
Other	3	(2)
Liability at end of period	118	134
Risk and Insurance Services Segment [Member]
Restructuring Reserve [Roll Forward]
Amounts Accrued	5
Consulting Segment [Member]
Restructuring Reserve [Roll Forward]
Amounts Accrued	1
Corporate Segment [Member]
Restructuring Reserve [Roll Forward]
Amounts Accrued	$ 11

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Principles Of Consolidation And Other Matters (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Operating funds related to regulatory requirements or as collateral under captive insurance arrangements	$ 250,000,000		$ 250,000,000
Effective tax rate	32.10%	26.80%	30.10%	29.20%
Unrecognized tax benefits	133,000,000		133,000,000		117,000,000
Reasonably possible decrease in unrecognized tax benefits	0		0
Projection of unrecognized tax benefit in twelve months, upper bound	$ 20,000,000		$ 20,000,000

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Debt (Tables)

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Schedule of Outstanding Debt

The Company’s outstanding debt is as follows:

(In millions of dollars)	September 30, 2013		December 31, 2012
Short-term:
Current portion of long-term debt	$	583	$	260
Long-term:
Senior notes – 4.850% due 2013	—		250
Senior notes – 5.875% due 2033	297		296
Senior notes – 5.375% due 2014	323		326
Senior notes – 5.75% due 2015	479		479
Senior notes – 2.30% due 2017	249		249
Senior notes – 9.25% due 2019	399		398
Senior notes – 4.80% due 2021	497		497
Senior notes – 2.55% due 2018	248		—
Senior notes – 4.05% due 2023	247		—
Mortgage – 5.70% due 2035	415		422
Term Loan Facility - due 2016	50		—
Other	2		1
	3,206		2,918
Less current portion	583		260
	$	2,623	$	2,658

Gain Or Loss On The Hedged Item And Offsetting Gain Or Loss On Interest Rate Swaps

The gain or (loss) on the hedged item (fixed rate debt) and the offsetting gain or (loss) on the interest rate swaps for the year-to-date periods ended September 30, 2013 and 2012 are as follows:

	2013							2012
Income statement classification                (In millions of dollars)	Loss on Swaps			Gain on Notes		Net Income Effect		Loss on Swaps			Gain on Notes		Net Income Effect
Other Operating Expenses	$	(3	)	$	3	$	—	$	(1	)	$	1	$	—

Estimated Fair Value Of Significant Financial Instruments

The fair value amounts shown below are not necessarily indicative of the amounts that the Company would realize upon disposition, nor do they indicate the Company’s intent or need to dispose of the financial instrument.

	September 30, 2013				December 31, 2012
(In millions of dollars)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Short-term debt	$	583	$	614	$	260	$	261
Long-term debt	$	2,623	$	2,828	$	2,658	$	2,986

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Restructuring Costs (Tables)

9 Months Ended

Sep. 30, 2013

Restructuring and Related Activities [Abstract]

Restructuring Activities

Details of the activity from January 1, 2012 through September 30, 2013 regarding restructuring activities, which includes liabilities from actions prior to 2013, are as follows:

(In millions of dollars)	Liability at 1/1/12		Amounts Accrued		Cash Paid			Other			Liability at 12/31/12		Amounts Accrued		Cash Paid			Other			Liability at 9/30/13
Severance	$	27	$	46	$	(38	)	$	1		$	36	$	8	$	(30	)	$	(2	)	$	12
Future rent under non-cancelable leases and other costs	154		32		(50		)	(2		)	134		9		(28		)	3			118
Total	$	181	$	78	$	(88	)	$	(1	)	$	170	$	17	$	(58	)	$	1		$	130

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Supplemental Disclosures To The Consolidated Statements Of Cash Flows

9 Months Ended

Sep. 30, 2013

Supplemental Cash Flow Information [Abstract]

Supplemental Disclosures To The Consolidated Statements Of Cash Flows

Supplemental Disclosures to the Consolidated Statements of Cash Flows

The following schedule provides additional information concerning acquisitions, interest and income taxes paid for the nine-month periods ended September 30, 2013 and 2012.

(In millions of dollars)	2013			2012
Assets acquired, excluding cash	$	199		$	160
Liabilities assumed	(59		)	(39		)
Contingent/deferred purchase consideration	(37		)	(19		)
Net cash outflow for current year acquisitions	103			102
Purchase of other intangibles	1			—
Deferred purchase consideration from prior years' acquisitions	4			51
Net cash outflow for acquisitions	$	108		$	153

(In millions of dollars)	2013		2012
Interest paid	$	140	$	150
Income taxes paid	$	258	$	237

The Company had non-cash issuances of common stock of $148 million and $187 million, respectively, for the nine months ended September 30, 2013 and 2012, primarily related to its share-based payment plans. The Company recorded stock-based compensation expense related to equity awards of $84 million and $117 million for the nine-month periods ended September 30, 2013 and 2012, respectively.

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Debt (Schedule Of Outstanding Debt) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Senior Debt Obligations Due 2013 [Member]	Feb. 28, 2013 Senior Debt Obligations Due 2013 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2013 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2033 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2033 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2014 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2014 [Member]	Feb. 28, 2011 Senior Debt Obligations Due 2014 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2015 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2015 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2017 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2017 [Member]	Mar. 31, 2012 Senior Debt Obligations Due 2017 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2019 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2019 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2021 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2021 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2018 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2018 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2023 [Member]	Dec. 31, 2012 Senior Debt Obligations Due 2023 [Member]	Sep. 30, 2013 Mortgage Due 2035 [Member]	Dec. 31, 2012 Mortgage Due 2035 [Member]	Sep. 30, 2013 Three-Year Delayed Draw Term Loan Facility [Member]	Dec. 31, 2012 Three-Year Delayed Draw Term Loan Facility [Member]	Sep. 30, 2013 Other [Member]	Dec. 31, 2012 Other [Member]
Debt Instrument [Line Items]
Current portion of long-term debt	$ 583	$ 260
Long-term debt, current and noncurrent	3,206	2,918	0		250	297	296	323	326		479	479	249	249		399	398	497	497	248	0	247	0	415	422	50	0	2	1
Long-term debt and capital lease obligations	$ 2,623	$ 2,658
Interest rate				4.85%		5.875%		5.375%		5.375%	5.75%		2.30%		2.30%	9.25%		4.80%		2.55%		4.05%		5.70%

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Acquisitions (Tables)

9 Months Ended

Sep. 30, 2013

Business Combinations [Abstract]

Schedule For Allocation of Acquisition Costs

The following table presents the preliminary allocation of the acquisition cost to the assets acquired and liabilities assumed during 2013 based on their fair values:

For the Nine Months Ended September 30,
(Amounts in millions)
Cash	$	119
Estimated fair value of deferred/contingent consideration	37
Total Consideration	$	156
Allocation of purchase price:
Cash and cash equivalents	$	16
Accounts receivable, net	11
Property, plant, and equipment	4
Intangible assets	74
Goodwill	93
Other current assets	17
Total assets acquired	215
Current liabilities	26
Other liabilities	33
Total liabilities assumed	59
Net assets acquired	$	156

Pro-Forma Information

The unaudited pro-forma financial data is presented for illustrative purposes only and is not necessarily indicative of the operating results that would have been achieved if such acquisitions had occurred on the dates indicated, nor is it necessarily indicative of future consolidated results.

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions, except per share figures)	2013		2012		2013		2012
Revenue	$	2,935	$	2,883	$	9,192	$	9,057
Income from continuing operations	$	260	$	247	$	1,076	$	947
Net income attributable to the Company	$	253	$	242	$	1,058	$	926
Basic net income per share:
– Continuing operations	$	0.46	$	0.44	$	1.92	$	1.70
– Net income attributable to the Company	$	0.46	$	0.44	$	1.93	$	1.70
Diluted net income per share:
– Continuing operations	$	0.46	$	0.44	$	1.89	$	1.68
– Net income attributable to the Company	$	0.45	$	0.44	$	1.90	$	1.67

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Per Share Data (Basic and Diluted EPS Calculation Continuing Operations) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]
Net income from continuing operations	$ 260	$ 246	$ 1,072	$ 939
Less: Net income attributable to non-controlling interests	6	6	24	21
Net income attributable to the Company	$ 254	$ 240	$ 1,048	$ 918
Basic weighted average common shares outstanding (in shares)	549	544	549	544
Dilutive effect of potentially issuable common shares (in shares)	9	8	9	8
Diluted weighted average common shares outstanding (in shares)	558	552	558	552
Average stock price used to calculate common stock equivalents (in dollars per share)	$ 42.08	$ 33.53	$ 39.15	$ 32.60
Stock options outstanding (in shares)	24.9	35.1	24.9	35.1

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Dispositions

9 Months Ended

Sep. 30, 2013

Discontinued Operations and Disposal Groups [Abstract]

Dispositions

Dispositions

Summarized Statements of Income data for discontinued operations is as follows:

	Three Months Ended September 30,					Nine Months Ended September 30,
(In millions of dollars, except per share figures)	2013			2012		2013			2012
Income (loss) from discontinued operations, net of tax	$	—		$	1	$	—		$	(1	)
Disposals of discontinued operations	—			—		(5		)	—
Income tax expense (credit)	1			—		(11		)	—
Disposals of discontinued operations, net of tax	(1		)	—		6			—
Discontinued operations, net of tax	$	(1	)	$	1	$	6		$	(1	)
Discontinued operations, net of tax per share
– Basic	$	—		$	—	$	0.01		$	—
– Diluted	$	—		$	0.01	$	0.01		$	—

The nine months ended September 30, 2013 includes estimated costs covered under the indemnity related to the Kroll sale and tax indemnities related to the Putnam sale.

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Per Share Data

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Per Share Data

Per Share Data

From 2009 through 2012, the Company used the two-class method to compute basic and diluted earnings per share ("EPS"). Under the accounting guidance which applies to the calculation of EPS for share-based payment awards with rights to dividends or dividend equivalents, unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and should be included in the computation of basic and dilutive EPS using the two-class method.

In the first quarter of 2013, the share-based payment awards with non-forfeitable rights to dividends became fully vested. As a result, the Company is no longer required to use the two-class method and in the first quarter of 2013 used the treasury stock method to calculate EPS. There was no difference in the earnings per share calculations when comparing the two-class method to the treasury stock method in any quarter of 2012. Therefore, the prior period information in the chart below shows the earnings per share calculation using the treasury stock method, consistent with current year presentation.

Basic net income per share attributable to the Company and income from continuing operations per share are calculated by dividing the respective after-tax income by the weighted average number of outstanding shares of the Company’s common stock.

Diluted net income per share attributable to the Company and income from continuing operations per share are calculated by dividing the respective after-tax income by the weighted average number of outstanding shares of the Company’s common stock, which have been adjusted for the dilutive effect of potentially issuable common shares. Reconciliations of the applicable income components used for diluted EPS - Continuing operations and basic weighted average common shares outstanding to diluted weighted average common shares outstanding are presented below. The reconciling items related to the calculation of diluted weighted average common shares outstanding are the same for net income attributable to the Company.

Basic and Diluted EPS Calculation - Continuing Operations	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions, except per share figures)	2013		2012		2013		2012
Net income from continuing operations	$	260	$	246	$	1,072	$	939
Less: Net income attributable to non-controlling interests	6		6		24		21
	$	254	$	240	$	1,048	$	918
Basic weighted average common shares outstanding	549		544		549		544
Dilutive effect of potentially issuable common shares	9		8		9		8
Diluted weighted average common shares outstanding	558		552		558		552
Average stock price used to calculate common stock equivalents	$	42.08	$	33.53	$	39.15	$	32.60

There were 24.9 million and 35.1 million stock options outstanding as of September 30, 2013 and 2012, respectively.

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Consolidated Statements Of Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Shares [Member]	Non-Controlling Interests [Member]
Balance, beginning of year at Dec. 31, 2011		$ 561	$ 1,156	$ 7,949	$ (3,188)	$ (595)	$ 57
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			(45)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact			(36)			282
Purchase of subsidiary shares from non-controlling interests			1
Net income	938			917			21
Distributions	5						(5)
Dividend equivalents declared (per share amounts: $0.96 in 2013 and $0.90 in 2012)				(6)
Dividends declared – (per share amounts: $0.96 in 2013 and $0.90 in 2012)				(489)
Other comprehensive income, net of tax	183				183
Purchase of treasury shares						(180)
Other changes							(3)
Balance, end of period at Sep. 30, 2012	6,580	561	1,076	8,371	(3,005)	(493)	70
Balance, beginning of year at Dec. 31, 2012	6,606	561	1,107	8,628	(3,307)	(447)	64
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			(45)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact			(52)			380
Purchase of subsidiary shares from non-controlling interests			0
Net income	1,078			1,054			24
Distributions	17						(17)
Dividend equivalents declared (per share amounts: $0.96 in 2013 and $0.90 in 2012)				(5)
Dividends declared – (per share amounts: $0.96 in 2013 and $0.90 in 2012)				(526)
Other comprehensive income, net of tax	94				94
Purchase of treasury shares						(400)
Other changes							7
Balance, end of period at Sep. 30, 2013	$ 7,120	$ 561	$ 1,010	$ 9,151	$ (3,213)	$ (467)	$ 78

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Goodwill And Other Intangibles (Changes In The Carrying Amount Of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012
Goodwill [Roll Forward]
Balance as of January 1, as reported	$ 6,792		$ 6,562
Goodwill acquired	93		126
Other adjustments(a)	(20)	[1]	(9)	[1]
Balance at September 30,	$ 6,865		$ 6,679

[1] Primarily reflects the impact of foreign exchange in each period.

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Acquisitions (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended					3 Months Ended	9 Months Ended					12 Months Ended
	Mar. 31, 2013	Sep. 30, 2013 acquisition	Sep. 30, 2012	Sep. 30, 2013 Minimum [Member]	Sep. 30, 2013 Maximum [Member]	Feb. 29, 2012 Acquisition Yokogawa-ORC [Member]	Sep. 30, 2013 Current Fiscal Period Acquisitions [Member]	Sep. 30, 2013 Current Fiscal Period Acquisitions [Member]	Sep. 30, 2013 Current Fiscal Period Acquisitions [Member] Minimum [Member]	Sep. 30, 2013 Current Fiscal Period Acquisitions [Member] Maximum [Member]	Sep. 30, 2013 Prior Fiscal Periods Acquisitions [Member]	Sep. 30, 2012 Prior Fiscal Periods Acquisitions [Member]	Dec. 31, 2012 Marsh Insurance Group [Member] acquisition	Dec. 31, 2012 Mercer Consulting Group [Member] acquisition
Business Acquisition [Line Items]
Number of acquisitions made (in acquisitions)		6											12	3
Business combination remaining percent acquired						49.00%
Total Consideration		$ 156	$ 205					$ 156
Cash		119	124					119
Estimated fair value of deferred/contingent consideration		37	19					37
Revenue target period (in years)				2 years	4 years				2 years	4 years
Cash held in escrow related to acquisition	62
Deferred purchase consideration											8
Revenue related to acquisitions							13	13
Operating income related to acquisitions							0	0
Deferred purchase consideration from prior years' acquisitions		$ 4	$ 51								$ 4	$ 51

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following fair value hierarchy table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2013 and December 31, 2012.

	Identical Assets (Level 1)				Observable Inputs (Level 2)				Unobservable Inputs (Level 3)				Total
(In millions of dollars)	09/30/13		12/31/12		09/30/13		12/31/12		09/30/13		12/31/12		09/30/13		12/31/12
Assets:
Financial instruments owned:
Mutual funds(a)	$	146	$	139	$	—	$	—	$	—	$	—	$	146	$	139
Money market funds(b)	23		483		—		—		—		—		23		483
Interest rate swap derivatives(c)	—		—		3		6		—		—		3		6
Total assets measured at fair value	$	169	$	622	$	3	$	6	$	—	$	—	$	172	$	628
Fiduciary Assets:
U.S. Municipal Bonds	$	—	$	—	$	—	$	3	$	—	$	—	$	—	$	3
Money market funds	4		149		—		—		—		—		4		149
Total fiduciary assets measured at fair value	$	4	$	149	$	—	$	3	$	—	$	—	$	4	$	152
Liabilities:
Contingent consideration liability(d)	$	—	$	—	$	—	$	—	$	92	$	63	$	92	$	63
Senior Notes due 2014(e)	—		—		253		256		—		—		253		256
Total liabilities measured at fair value	$	—	$	—	$	253	$	256	$	92	$	63	$	345	$	319

^(a)  Included in other assets in the consolidated balance sheets.

^(b)  Included in cash and cash equivalents in the consolidated balance sheets.

^(c)  Included in other receivables in the consolidated balance sheets.

^(d)  Included in accounts payable and accrued liabilities and other liabilities in the consolidated balance sheets.

^(e)  Included in long term debt in the consolidated balance sheets.

Changes in Fair Value of Level 3 Liabilities Representing Acquisition Related Contingent Consideration

The table below sets forth a summary of the changes in fair value of the Company’s Level 3 liabilities as of September 30, 2013 and 2012 that represent contingent consideration related to acquisitions:

(In millions of dollars)	2013			2012
Balance at January 1,	$	63		$	110
Additions	21			19
Payments	(8		)	(20		)
Revaluation Impact	16			(32		)
Balance at September 30,	$	92		$	77

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Common Stock (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	3 Months Ended	9 Months Ended
	May 31, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
Equity, Class of Treasury Stock [Line Items]
Payments for repurchase of common stock			$ 400,000,000	$ 180,000,000
Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)			10.0	5.4
Share repurchases program, authorized amount	1,000,000,000
Stock repurchase program, remaining authorized repurchase amount		$ 712,000,000

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Retirement Benefits (Schedule Of Defined Benefit Plan Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 63	$ 59	$ 188	$ 180
Interest cost	144	148	433	445
Expected return on plan assets	(227)	(225)	(680)	(676)
Amortization of prior service credit	(5)	(4)	(16)	(14)
Recognized actuarial loss	79	67	237	201
Net periodic benefit cost	54	45	162	136
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	26	23	78	70
Interest cost	57	57	171	172
Expected return on plan assets	(81)	(80)	(243)	(241)
Amortization of prior service credit	(4)	(4)	(12)	(12)
Recognized actuarial loss	52	38	156	114
Net periodic benefit cost	50	34	150	103
Non-U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	37	36	110	110
Interest cost	87	91	262	273
Expected return on plan assets	(146)	(145)	(437)	(435)
Amortization of prior service credit	(1)		(4)	(2)
Recognized actuarial loss	27	29	81	87
Net periodic benefit cost	4	11	12	33
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	1	4	3
Interest cost	2	3	8	9
Expected return on plan assets
Amortization of prior service credit		(3)		(9)
Recognized actuarial loss			1
Net periodic benefit cost	4	1	13	3
U.S. Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	2	2
Interest cost	1	2	5	6
Expected return on plan assets
Amortization of prior service credit		(3)		(9)
Recognized actuarial loss				(1)
Net periodic benefit cost	2		7	(2)
Foreign Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1		2	1
Interest cost	1	1	3	3
Expected return on plan assets
Amortization of prior service credit
Recognized actuarial loss			1	1
Net periodic benefit cost	$ 2	$ 1	$ 6	$ 5

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Retirement Benefits

9 Months Ended

Sep. 30, 2013

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Retirement Benefits

 Retirement Benefits

The Company maintains qualified and non-qualified defined benefit pension plans for its U.S. and non-U.S. eligible employees. The Company’s policy for funding its tax qualified defined benefit retirement plans is to contribute amounts at least sufficient to meet the funding requirements set forth by U.S. law and the laws of the non-U.S. jurisdictions in which the Company offers defined benefit plans.

The target asset allocation for the U.S. Plan is 58% equities and equity alternatives and 42% fixed income. As of September 30, 2013, the actual allocation for the U.S. Plan was 62% equities and equity alternatives and 38% fixed income. The target asset allocation for the U.K. Plans, which comprises approximately 83% of non-U.S. Plan assets, is 53% equities and equity alternatives and 47% fixed income. As of September 30, 2013, the actual allocation for the U.K. Plan was 50% equities and equity alternatives and 50% fixed income. The assets of the Company's defined benefit plans are diversified and are managed in accordance with applicable laws and with the goal of maximizing the plans' real return within acceptable risk parameters. The Company uses threshold-based portfolio re-balancing to ensure the actual portfolio remains consistent with target asset allocation ranges.

The components of the net periodic benefit cost for defined benefit and other post-retirement plans are as follows:

Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	63		$	59		$	2	$	1
Interest cost	144			148			2		3
Expected return on plan assets	(227		)	(225		)	—		—
Amortization of prior service credit	(5		)	(4		)	—		(3		)
Recognized actuarial loss	79			67			—		—
Net periodic benefit cost	$	54		$	45		$	4	$	1
Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	188		$	180		$	4	$	3
Interest cost	433			445			8		9
Expected return on plan assets	(680		)	(676		)	—		—
Amortization of prior service credit	(16		)	(14		)	—		(9		)
Recognized actuarial loss	237			201			1		—
Net periodic benefit cost	$	162		$	136		$	13	$	3
U.S. Plans only	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	26		$	23		$	1	$	1
Interest cost	57			57			1		2
Expected return on plan assets	(81		)	(80		)	—		—
Amortization of prior service credit	(4		)	(4		)	—		(3		)
Recognized actuarial loss	52			38			—		—
Net periodic benefit cost	$	50		$	34		$	2	$	—

U.S. Plans only	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	78		$	70		$	2	$	2
Interest cost	171			172			5		6
Expected return on plan assets	(243		)	(241		)	—		—
Amortization of prior service credit	(12		)	(12		)	—		(9		)
Recognized actuarial loss (gain)	156			114			—		(1		)
Net periodic benefit cost (credit)	$	150		$	103		$	7	$	(2	)

Significant non-U.S. Plans only	Pension						Postretirement
For the Three Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	37		$	36		$	1	$	—
Interest cost	87			91			1		1
Expected return on plan assets	(146		)	(145		)	—		—
Amortization of prior service credit	(1		)	—			—		—
Recognized actuarial loss	27			29			—		—
Net periodic benefit cost	$	4		$	11		$	2	$	1

Significant non-U.S. Plans only	Pension						Postretirement
For the Nine Months Ended September 30,	Benefits						Benefits
(In millions of dollars)	2013			2012			2013		2012
Service cost	$	110		$	110		$	2	$	1
Interest cost	262			273			3		3
Expected return on plan assets	(437		)	(435		)	—		—
Amortization of prior service cost	(4		)	(2		)	—		—
Recognized actuarial loss	81			87			1		1
Net periodic benefit cost	$	12		$	33		$	6	$	5

The weighted average actuarial assumptions utilized to calculate the net periodic benefit costs for the U.S. and significant non-U.S. defined benefit plans are as follows:

Combined U.S. and significant non-U.S. Plans	Pension Benefits				Postretirement Benefits
September 30,	2013		2012		2013		2012
Weighted average assumptions:
Expected return on plan assets	7.66	%	8.04	%	—	%	—	%
Discount rate	4.38	%	4.91	%	4.32	%	5.05	%
Rate of compensation increase	2.43	%	3.09	%	—	%	—	%

The Company made approximately $552 million of contributions to its U.S. and non-U.S. defined benefit plans in the first nine months of 2013, including $250 million to its U.K. pension plans to pre-fund all or a substantial portion of any deficit funding contributions that may be required from 2014 through 2016 as a result of negotiations with the Trustee of its U.K. pension plans. The Company also made discretionary contributions of $70 million to its Canadian pension plans. The Company expects to contribute approximately $102 million to its non-qualified U.S. pension and non-U.S. pension plans during the remainder of 2013.

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Acquisitions

9 Months Ended

Sep. 30, 2013

Business Combinations [Abstract]

Acquisitions

Acquisitions

The Company completed six acquisitions during the first nine months of 2013.

In September 2013, Marsh purchased an additional stake in Insia a.s., an insurance broker operating in the Czech Republic and Slovakia which, when combined with its prior holdings, gave MMC a controlling interest. Insia a.s. was previously accounted for under the equity method. In August 2013, Mercer acquired Global Remuneration Solutions, a market leading compensation consulting firm based in South Africa. In July 2013, Oliver Wyman acquired Corven, a U.K.-based management consultancy firm and Guy Carpenter acquired Smith Group, a specialist disability reinsurance risk manager and consultant based in Maine. In June 2013, Marsh acquired Rehder y Asociados Group, an insurance adviser in Peru. The business includes the insurance broker Rehder y Asociados and employee health and benefits specialist, Humanasalud. Marsh also completed the acquisition of Franco & Acra Tecniseguros, an insurance advisor in the Dominican Republic in June 2013.

Total purchase consideration for acquisitions made during the nine months of 2013 was $156 million, which consisted of cash paid of $119 million and deferred purchase and estimated contingent consideration of $37 million. Contingent consideration arrangements are primarily based on EBITDA and revenue targets over two to four years. The fair value of the contingent consideration was based on projected revenue and earnings of the acquired entities. Estimated fair values of assets acquired and liabilities assumed are subject to adjustment when purchase accounting is finalized. The Company also paid $4 million of deferred purchase consideration and $8 million of contingent consideration related to acquisitions made in prior years.

The following table presents the preliminary allocation of the acquisition cost to the assets acquired and liabilities assumed during 2013 based on their fair values:

For the Nine Months Ended September 30,
(Amounts in millions)
Cash	$	119
Estimated fair value of deferred/contingent consideration	37
Total Consideration	$	156
Allocation of purchase price:
Cash and cash equivalents	$	16
Accounts receivable, net	11
Property, plant, and equipment	4
Intangible assets	74
Goodwill	93
Other current assets	17
Total assets acquired	215
Current liabilities	26
Other liabilities	33
Total liabilities assumed	59
Net assets acquired	$	156

Prior Year Acquisitions

During 2012, Marsh completed the following twelve acquisitions:

• January - Marsh acquired Alexander Forbes' South African brokerage operations, including Alexander Forbes Risk Services and insurance broking operations in Botswana and Namibia to expand Marsh's presence in Africa. Marsh subsequently completed the acquisitions of the Alexander Forbes operations in Uganda, Malawi and Zambia.

• March - Marsh & McLennan Agency business ("MMA") acquired KSPH, LLC, a middle-market employee benefits agency based in Virginia, and Marsh acquired Cosmos Services (America) Inc., the U.S. insurance brokerage subsidiary of ITOCHU Corp., which specializes in commercial property/casualty, personal lines, and employee benefits brokerage services to U.S. subsidiaries of Japanese companies.

• June - MMA acquired Progressive Benefits Solutions, an employee benefits agency based in North Carolina, and Security Insurance Services, Inc., a Wisconsin-based insurance agency which offers property/casualty and employee benefits products and services to individuals and businesses.

• August - MMA acquired Rosenfeld-Einstein, a South Carolina-based employee benefits service provider, and Eidson Insurance, a property/casualty and employee benefits services firm located in Florida.

• October - MMA acquired Howalt+McDowell, a South Dakota-based agency which offers property casualty, surety, personal protection and employee benefits insurance to individuals and businesses, and The Protector Group Insurance Agency, a Massachusetts-based agency which provides property/casualty, employee benefits services, personal insurance and individual financial services.

• November - MMA acquired Brower Insurance, an Ohio-based company providing employee benefits, property/casualty and consulting services.

• December - MMA acquired McGraw Wentworth, a Michigan-based company providing consulting services to mid-sized organizations, and Liscomb Hood Mason, a Minnesota-based company providing property/casualty and employee benefits products and services.

The MMA acquisitions were made to expand Marsh's presence in the U.S. middle-market business.

During 2012, Mercer completed the following three acquisitions:

• February - Mercer acquired the remaining 49% of Yokogawa-ORC, a global mobility firm based in Japan, which was previously accounted for under the equity method, and Pensjon & Finans, a Norwegian financial investment and pension consulting firm.

• March - Mercer acquired REPCA, a France-based broking and advisory firm for employer health and benefits plans.

Total purchase consideration for acquisitions made during the first nine months of 2012 was $205 million which consisted of cash paid of $124 million and estimated contingent consideration of $19 million, and cash held in escrow of $62 million that was released in the first quarter of 2013. The Company also paid $51 million of deferred purchase and contingent consideration related to acquisitions made in prior years.

Pro-Forma Information

While the Company does not believe its acquisitions are material in the aggregate, the following unaudited pro-forma financial data gives effect to the acquisitions made by the Company during the first nine months of 2013 and 2012. In accordance with accounting guidance related to pro-forma disclosure, the information presented for 2013 acquisitions is as if they occurred on January 1, 2012 and reflects acquisitions made in 2012 as if they occurred on January 1, 2011. The pro-forma information adjusts for the effects of amortization of acquired intangibles. The unaudited pro-forma financial data is presented for illustrative purposes only and is not necessarily indicative of the operating results that would have been achieved if such acquisitions had occurred on the dates indicated, nor is it necessarily indicative of future consolidated results.

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions, except per share figures)	2013		2012		2013		2012
Revenue	$	2,935	$	2,883	$	9,192	$	9,057
Income from continuing operations	$	260	$	247	$	1,076	$	947
Net income attributable to the Company	$	253	$	242	$	1,058	$	926
Basic net income per share:
– Continuing operations	$	0.46	$	0.44	$	1.92	$	1.70
– Net income attributable to the Company	$	0.46	$	0.44	$	1.93	$	1.70
Diluted net income per share:
– Continuing operations	$	0.46	$	0.44	$	1.89	$	1.68
– Net income attributable to the Company	$	0.45	$	0.44	$	1.90	$	1.67

The consolidated statements of income includes the results of operations of acquired companies as of their respective acquisition dates. The consolidated statements of income for both the three-month and nine-month periods ending September 30, 2013 include approximately $13 million of revenue and $0 million of net operating income related to acquisitions made in 2013.

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Segment Information (Selected Information And Details For MMC's Operating Segments) (Details) (USD $)	3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended	12 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Risk and Insurance Services Segment [Member]	Sep. 30, 2013 Consulting Segment [Member]	Sep. 30, 2012 Consulting Segment [Member]	Sep. 30, 2013 Consulting Segment [Member]	Sep. 30, 2012 Consulting Segment [Member]	Sep. 30, 2013 Operating Segments [Member]	Sep. 30, 2012 Operating Segments [Member]	Sep. 30, 2013 Operating Segments [Member]	Sep. 30, 2012 Operating Segments [Member]	Sep. 30, 2013 Operating Segments [Member] Risk and Insurance Services Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Risk and Insurance Services Segment [Member]		Sep. 30, 2013 Operating Segments [Member] Risk and Insurance Services Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Risk and Insurance Services Segment [Member]		Sep. 30, 2013 Operating Segments [Member] Consulting Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Consulting Segment [Member]		Sep. 30, 2013 Operating Segments [Member] Consulting Segment [Member]		Sep. 30, 2012 Operating Segments [Member] Consulting Segment [Member]		Sep. 30, 2013 Intersegment Eliminations [Member]	Sep. 30, 2012 Intersegment Eliminations [Member]	Sep. 30, 2013 Intersegment Eliminations [Member]	Sep. 30, 2012 Intersegment Eliminations [Member]	Sep. 30, 2013 Intersegment Eliminations [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2012 Intersegment Eliminations [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2013 Intersegment Eliminations [Member] Risk and Insurance Services Segment [Member]	Dec. 31, 2012 Intersegment Eliminations [Member] Risk and Insurance Services Segment [Member]	Sep. 30, 2013 Intersegment Eliminations [Member] Consulting Segment [Member]	Sep. 30, 2012 Intersegment Eliminations [Member] Consulting Segment [Member]	Sep. 30, 2013 Intersegment Eliminations [Member] Consulting Segment [Member]	Sep. 30, 2012 Intersegment Eliminations [Member] Consulting Segment [Member]	Sep. 30, 2013 Corporate, Non-Segment [Member]	Sep. 30, 2012 Corporate, Non-Segment [Member]	Sep. 30, 2013 Corporate, Non-Segment [Member]	Sep. 30, 2012 Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue	$ 2,932,000,000	$ 2,845,000,000	$ 9,146,000,000	$ 8,922,000,000							$ 2,941,000,000	$ 2,856,000,000	$ 9,172,000,000	$ 8,955,000,000	$ 1,504,000,000	[1]	$ 1,451,000,000	[1]	$ 4,963,000,000	[2]	$ 4,781,000,000	[2]	$ 1,437,000,000	[3]	$ 1,405,000,000	[3]	$ 4,209,000,000	[4]	$ 4,174,000,000	[4]	$ (9,000,000)	$ (11,000,000)	$ (26,000,000)	$ (33,000,000)	$ 1,000,000	$ 1,000,000	$ 4,000,000	$ 4,000,000	$ 8,000,000	$ 10,000,000	$ 22,000,000	$ 29,000,000
Operating Income (Loss)	404,000,000	378,000,000	1,588,000,000	1,423,000,000							454,000,000	427,000,000	1,735,000,000	1,576,000,000	222,000,000		222,000,000		1,111,000,000		1,024,000,000		232,000,000		205,000,000		624,000,000		552,000,000														(50,000,000)	(49,000,000)	(147,000,000)	(153,000,000)
Interest income on fiduciary funds					21,000,000	31,000,000	1,000,000	1,000,000	3,000,000	2,000,000					7,000,000		10,000,000		21,000,000		31,000,000						3,000,000		2,000,000
Equity method income															$ 2,000,000				$ 10,000,000		$ 10,000,000

[1] Includes inter-segment revenue of $1 million in both 2013 and 2012, interest income on fiduciary funds of $7 million and $10 million in 2013 and 2012, respectively, and equity method income of $2 million in 2013.

[2] Includes inter-segment revenue of $4 million in both 2013 and 2012, interest income on fiduciary funds of $21 million and $31 million in 2013 and 2012, respectively, and equity method income of $10 million in both 2013 and 2012.

[3] Includes inter-segment revenue of $8 million and $10 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $1 million in both 2013 and 2012.

[4] Includes inter-segment revenue of $22 million and $29 million in 2013 and 2012, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2013 and 2012, respectively.

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Common Stock

9 Months Ended

Sep. 30, 2013

Equity [Abstract]

Common Stock

Common Stock

During the first nine months of 2013, the Company repurchased 10 million shares of its common stock for consideration of $400 million. In May 2013, the Board of Directors of the Company authorized share repurchases of up to $1 billion of the Company's common stock. The Company remains authorized to purchase additional shares of its common stock up to a value of $712 million. There is no time limit on the authorization. During the first nine months of 2012, the Company repurchased 5.4 million shares of its common stock for consideration of $180 million.

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Debt

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Debt

Debt

The Company’s outstanding debt is as follows:

(In millions of dollars)	September 30, 2013		December 31, 2012
Short-term:
Current portion of long-term debt	$	583	$	260
Long-term:
Senior notes – 4.850% due 2013	—		250
Senior notes – 5.875% due 2033	297		296
Senior notes – 5.375% due 2014	323		326
Senior notes – 5.75% due 2015	479		479
Senior notes – 2.30% due 2017	249		249
Senior notes – 9.25% due 2019	399		398
Senior notes – 4.80% due 2021	497		497
Senior notes – 2.55% due 2018	248		—
Senior notes – 4.05% due 2023	247		—
Mortgage – 5.70% due 2035	415		422
Term Loan Facility - due 2016	50		—
Other	2		1
	3,206		2,918
Less current portion	583		260
	$	2,623	$	2,658

The senior notes in the table above are publicly registered by the Company with no guarantees attached.

In September 2013, the Company issued $250 million of 2.55%five-year senior notes and $250 million of 4.05%ten-year senior notes. The net proceeds of this offering will be used for general corporate purposes, which includes a partial redemption of $250 million of the outstanding principal amount of the existing 5.75% senior notes due 2015. The redemption settled in October 2013 with a total cash outflow of approximately $275 million including a $24 million charge for early redemption.

In February 2013, the Company repaid its 4.850% fixed rate $250 million senior notes that matured using cash.

During the first quarter of 2012, the Company repaid its 6.25% fixed rate $250 million senior notes that matured. The Company used proceeds from the issuance of 2.3%five-year $250 million senior notes in the first quarter of 2012 to fund the maturing notes.

The Company and certain of its foreign subsidiaries maintain a $1.0 billion multi-currency unsecured revolving credit facility which expires in October 2016. The interest rate on this facility is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. This facility requires the Company to maintain certain coverage and leverage ratios which are tested quarterly. There were no borrowings outstanding under this facility at September 30, 2013.

In December 2012, the Company closed on a $50 million, three-year term loan facility. The interest rate on this facility at September 30, 2013 was 1.43%, which is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. The facility requires the Company to maintain coverage ratios and leverage ratios consistent with the revolving credit facility discussed above. The Company had $50 million of borrowings under this facility at September 30, 2013.

Derivative Financial Instruments

In February 2011, the Company entered into two$125 million3.5-year interest rate swaps to hedge changes in the fair value of the first $250 million of the outstanding 5.375% senior notes due in 2014.

Under the terms of the swaps, the counter-parties pay the Company a fixed rate of 5.375% and the Company pays interest at a floating rate of three-month LIBOR plus a fixed spread of 3.726%. The maturity date of the senior notes and the swaps match exactly. The floating rate resets quarterly, with every second reset occurring on the interest payment date of the senior notes. The swaps net settle every six months on the senior note coupon payment dates. The swaps are designated as fair value hedging instruments, and in accordance with applicable accounting guidance, are deemed to be perfectly effective. The fair value of the swaps at inception was zero and subsequent changes in the fair value of the interest rate swaps are reflected in the carrying value of the interest rate swaps and in the consolidated balance sheet. The carrying value of the debt on the balance sheet was adjusted by an equal amount. The gain or (loss) on the hedged item (fixed rate debt) and the offsetting gain or (loss) on the interest rate swaps for the year-to-date periods ended September 30, 2013 and 2012 are as follows:

	2013							2012
Income statement classification                (In millions of dollars)	Loss on Swaps			Gain on Notes		Net Income Effect		Loss on Swaps			Gain on Notes		Net Income Effect
Other Operating Expenses	$	(3	)	$	3	$	—	$	(1	)	$	1	$	—

The amounts earned and owed under the swap agreements are accrued each period and are reported in interest expense. There was no ineffectiveness recognized in the periods presented.

Fair Value of Short-term and Long-term Debt

The estimated fair value of the Company’s significant financial instruments is provided below. Certain estimates and judgments were required to develop the fair value amounts. The fair value amounts shown below are not necessarily indicative of the amounts that the Company would realize upon disposition, nor do they indicate the Company’s intent or need to dispose of the financial instrument.

	September 30, 2013				December 31, 2012
(In millions of dollars)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Short-term debt	$	583	$	614	$	260	$	261
Long-term debt	$	2,623	$	2,828	$	2,658	$	2,986

The estimated fair value of the Company’s short and long-term debt is primarily based on discounted future cash flows using current interest rates available for debt with similar terms and remaining maturities. Short and long-term debt would be classified as Level 2 in the fair value hierarchy.

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Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013
Document And Entity Information [Abstract]
Entity Registrant Name	MARSH & MCLENNAN COMPANIES, INC.
Entity Central Index Key	0000062709
Trading Symbol	MMC
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		548,775,659

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Restructuring Costs

9 Months Ended

Sep. 30, 2013

Restructuring and Related Activities [Abstract]

Restructuring Costs

Restructuring Costs

The Company recorded total restructuring costs of $17 million in the first nine months of 2013, related to severance and future rent under non-cancelable leases. These costs were incurred as follows: Risk and Insurance Services -$5 million, Consulting - $1 million and Corporate - $11 million.

Details of the activity from January 1, 2012 through September 30, 2013 regarding restructuring activities, which includes liabilities from actions prior to 2013, are as follows:

(In millions of dollars)	Liability at 1/1/12		Amounts Accrued		Cash Paid			Other			Liability at 12/31/12		Amounts Accrued		Cash Paid			Other			Liability at 9/30/13
Severance	$	27	$	46	$	(38	)	$	1		$	36	$	8	$	(30	)	$	(2	)	$	12
Future rent under non-cancelable leases and other costs	154		32		(50		)	(2		)	134		9		(28		)	3			118
Total	$	181	$	78	$	(88	)	$	(1	)	$	170	$	17	$	(58	)	$	1		$	130

The expenses associated with the above initiatives are included in compensation and benefits and other operating expenses in the consolidated statements of income. The liabilities associated with these initiatives are classified on the consolidated balance sheets as accounts payable, other liabilities, or accrued compensation, depending on the nature of the items.

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Debt (Narrative) (Details) (USD $)	1 Months Ended	9 Months Ended			3 Months Ended			3 Months Ended				1 Months Ended					1 Months Ended		9 Months Ended		1 Months Ended
	Feb. 28, 2011 interest_rate_swap	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2012 interest_rate_swap	Sep. 30, 2013 Senior Debt Obligations Due 2018 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2023 [Member]	Feb. 28, 2013 Senior Debt Obligations Due 2013 [Member]	Mar. 31, 2012 Senior Debt Obligations Due 2012 [Member]	Mar. 31, 2012 Senior Debt Obligations Due 2017 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2017 [Member]	Sep. 30, 2013 Revolving Credit Facility [Member]	Dec. 31, 2012 Three-Year Delayed Draw Term Loan Facility [Member]	Sep. 30, 2013 Three-Year Delayed Draw Term Loan Facility [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2014 [Member]	Feb. 28, 2011 Senior Debt Obligations Due 2014 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2015 [Member]	Feb. 28, 2013 Senior Debt Obligations Due 2013 [Member]	Feb. 28, 2011 London Interbank Offered Rate (LIBOR) [Member]	Sep. 30, 2013 Interest Rate Swap [Member]	Sep. 30, 2012 Interest Rate Swap [Member]	Oct. 31, 2013 Subsequent Event [Member] Senior Debt Obligations Due 2015 [Member]
Debt Instrument [Line Items]
Proceeds from issuance of debt					$ 250,000,000	$ 250,000,000			$ 250,000,000
Interest rate					2.55%	4.05%	4.85%	6.25%	2.30%	2.30%				5.375%	5.375%	5.75%	4.85%
Repayments of Long-term Debt		257,000,000	257,000,000																		275,000,000
Gains (Losses) on Extinguishment of Debt																					24,000,000
Repaid senior notes that matured								250,000,000									250,000,000
Term of debt					5 years	10 years			5 years			3 years
Debt Instrument, Repurchase Amount																250,000,000
Line of credit facility, current borrowing capacity											1,000,000,000.0
Revolving credit facility, amount outstanding											0		50,000,000
Three-year draw term loan facility												50,000,000
Interest rate on three-year draw term loan facility													1.43%
Number of interest rate swaps	2			2
Interest rate swap for hedging	125,000,000
Interest rate swap maturity, in years	3 years 6 months
5.375% senior notes due in 2014, hedged value														250,000,000	250,000,000
Fixed interest rate of swaps															5.375%
Floating rate three-month LIBOR plus fixed spread interest percentage																		3.726%
Term of interest rate swap net settlement (in months)		6 months
Interest rate swaps, fair value adjustment	0
Swap agreements, effectiveness recognized during the period																			$ 0	$ 0

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Retirement Benefits (Schedule Of Defined Benefit Plan Weighted Average Assumption Used In Calculating Net Periodic Benefit Cost) (Details)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Pension Benefits [Member]
Weighted average assumptions:
Expected return on plan assets	7.66%	8.04%
Discount rate	4.38%	4.91%
Rate of compensation increase	2.43%	3.09%
Postretirement Benefits [Member]
Weighted average assumptions:
Expected return on plan assets	0.00%	0.00%
Discount rate	4.32%	5.05%
Rate of compensation increase	0.00%	0.00%