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 June 30, 2014

_____________________________________________ 

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 July 28, 2014, there were outstanding 544,316,951 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;

• 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 confidential information or data, and the potential of a system or network disruption that results in regulatory penalties, remedial costs and/or the improper disclosure of confidential information or 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 in the domestic and international jurisdictions in which we operate, including evolving sanctions against Russia and existing 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;

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

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

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

• 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 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.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	42
ITEM 4.	CONTROLS & PROCEDURES	43
PART II. OTHER INFORMATION		44
ITEM 1.	LEGAL PROCEEDINGS	44
ITEM 1A.	RISK FACTORS	44
ITEM 2.	UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	44
ITEM 3.	DEFAULTS UPON SENIOR SECURITIES	45
ITEM 4.	MINE SAFETY DISCLOSURE	45
ITEM 5.	OTHER INFORMATION	45
ITEM 6.	EXHIBITS	45

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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 June 30,						Six Months Ended June 30,
(In millions, except per share figures)	2014			2013			2014			2013
Revenue	$	3,300		$	3,088		$	6,564		$	6,214
Expense:
Compensation and benefits	1,876			1,766			3,715			3,569
Other operating expenses	777			745			1,529			1,461
Operating expenses	2,653			2,511			5,244			5,030
Operating income	647			577			1,320			1,184
Interest income	5			4			10			8
Interest expense	(42		)	(40		)	(84		)	(84		)
Investment income	(2		)	23			11			44
Income before income taxes	608			564			1,257			1,152
Income tax expense	168			164			360			340
Income from continuing operations	440			400			897			812
Discontinued operations, net of tax	(2		)	(5		)	(3		)	7
Net income before non-controlling interests	438			395			894			819
Less: Net income attributable to non-controlling interests	7			7			20			18
Net income attributable to the Company	$	431		$	388		$	874		$	801
Basic net income per share – Continuing operations	$	0.79		$	0.71		$	1.60		$	1.45
– Net income attributable to     the Company	$	0.78		$	0.71		$	1.59		$	1.46
Diluted net income per share – Continuing operations	$	0.78		$	0.70		$	1.58		$	1.42
– Net income attributable to     the Company	$	0.77		$	0.69		$	1.57		$	1.44
Average number of shares outstanding – Basic	549			551			548			549
– Diluted	556			559			556			558
Shares outstanding at June 30	546			549			546			549

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 June 30,						Six Months Ended June 30,
(In millions)	2014			2013			2014			2013
Net income before non-controlling interests	$	438		$	395		$	894		$	819
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	136			(85		)	207			(345		)
Unrealized investment loss	—			(1		)	—			(1		)
Gain (loss) related to pension/post-retirement plans	(42		)	50			(241		)	302
Other comprehensive income (loss), before tax	94			(36		)	(34		)	(44		)
Income tax expense (credit) on other comprehensive income	(7		)	20			(48		)	84
Other comprehensive income (loss), net of tax	101			(56		)	14			(128		)
Comprehensive income	539			339			908			691
Less: comprehensive income attributable to non-controlling interest	7			7			20			18
Comprehensive income attributable to the Company	$	532		$	332		$	888		$	673

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

5

MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Unaudited)

(In millions, except per share figures)	June 30, 2014			December 31, 2013
ASSETS
Current assets:
Cash and cash equivalents	$	2,005		$	2,303
Receivables
Commissions and fees	3,461			3,065
Advanced premiums and claims	59			61
Other	292			282
	3,812			3,408
Less-allowance for doubtful accounts and cancellations	(106		)	(98		)
Net receivables	3,706			3,310
Current deferred tax assets	480			482
Other current assets	223			205
Total current assets	6,414			6,300
Goodwill and intangible assets	7,871			7,365
Fixed assets (net of accumulated depreciation and amortization of $1,663 at June 30, 2014 and $1,597 at December 31, 2013)	843			828
Pension related assets	980			979
Deferred tax assets	546			626
Other assets	934			882
	$	17,588		$	16,980

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)	June 30, 2014			December 31, 2013
LIABILITIES AND EQUITY
Current liabilities:
Short-term debt	$	333		$	334
Accounts payable and accrued liabilities	1,849			1,861
Accrued compensation and employee benefits	985			1,466
Accrued income taxes	209			148
Dividends payable	154			—
Total current liabilities	3,530			3,809
Fiduciary liabilities	5,237			4,234
Less – cash and investments held in a fiduciary capacity	(5,237		)	(4,234		)
	—			—
Long-term debt	3,212			2,621
Pension, post-retirement and post-employment benefits	1,123			1,150
Liabilities for errors and omissions	366			373
Other liabilities	1,129			1,052
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 June 30, 2014
and December 31, 2013	561			561
Additional paid-in capital	914			1,028
Retained earnings	9,897			9,452
Accumulated other comprehensive loss	(2,607		)	(2,621		)
Non-controlling interests	77			70
	8,842			8,490
Less – treasury shares, at cost, 14,993,131 shares at June 30, 2014
and 13,882,204 shares at December 31, 2013	(614		)	(515		)
Total equity	8,228			7,975
	$	17,588		$	16,980

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 Six Months Ended June 30,
(In millions)	2014			2013
Operating cash flows:
Net income before non-controlling interests	$	894		$	819
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software	149			142
Amortization of intangible assets	42			35
Adjustments to acquisition related contingent consideration liability	(3		)	10
Provision for deferred income taxes	83			71
Gain on investments	(10		)	(44		)
Loss on disposition of assets	2			5
Share based compensation expense	51			66
Changes in assets and liabilities:
Net receivables	(392		)	(283		)
Other current assets	(16		)	(34		)
Other assets	15			(75		)
Accounts payable and accrued liabilities	(7		)	27
Accrued compensation and employee benefits	(480		)	(615		)
Accrued income taxes	61			53
Contributions to pension and other benefit plans in excess of current year expense/credit	(118		)	(370		)
Other liabilities	(39		)	17
Effect of exchange rate changes	26			13
Net cash provided by (used for) operations	258			(163		)
Financing cash flows:
Purchase of treasury shares	(350		)	(250		)
Proceeds from debt	595			50
Repayments of debt	(5		)	(255		)
Shares withheld for taxes on vested units – treasury shares	(55		)	(68		)
Issuance of common stock from treasury shares	136			206
Payments of contingent consideration for acquisitions	(24		)	(5		)
Distributions of non-controlling interests	(13		)	(15		)
Dividends paid	(275		)	(255		)
Net cash provided by (used for) financing activities	9			(592		)
Investing cash flows:
Capital expenditures	(202		)	(192		)
Net sales of long-term investments	2			82
Proceeds from sales of fixed assets	1			2
Dispositions	—			3
Acquisitions	(383		)	(91		)
Other, net	1			2
Net cash used for investing activities	(581		)	(194		)
Effect of exchange rate changes on cash and cash equivalents	16			(122		)
Decrease in cash and cash equivalents	(298		)	(1,071		)
Cash and cash equivalents at beginning of period	2,303			2,301
Cash and cash equivalents at end of period	$	2,005		$	1,230

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

8

MARSH & McLENNAN COMPANIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY

(Unaudited)

For the Six Months Ended June 30,
(In millions, except per share figures)	2014			2013
COMMON STOCK
Balance, beginning and end of period	$	561		$	561
ADDITIONAL PAID-IN CAPITAL
Balance, beginning of year	$	1,028		$	1,107
Change in accrued stock compensation costs	(47		)	(69		)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact	(67		)	(36		)
Balance, end of period	$	914		$	1,002
RETAINED EARNINGS
Balance, beginning of year	$	9,452		$	8,628
Net income attributable to the Company	874			801
Dividend equivalents declared - (per share amounts: $0.78 in 2014 and $0.71 in 2013)	(2		)	(3		)
Dividends declared – (per share amounts: $0.78 in 2014 and $0.71 in 2013)	(427		)	(390		)
Balance, end of period	$	9,897		$	9,036
ACCUMULATED OTHER COMPREHENSIVE LOSS
Balance, beginning of year	$	(2,621	)	$	(3,307	)
Other comprehensive income (loss), net of tax	14			(128		)
Balance, end of period	$	(2,607	)	$	(3,435	)
TREASURY SHARES
Balance, beginning of year	$	(515	)	$	(447	)
Issuance of shares under stock compensation plans and employee stock purchase plans	251			312
Purchase of treasury shares	(350		)	(250		)
Balance, end of period	$	(614	)	$	(385	)
NON-CONTROLLING INTERESTS
Balance, beginning of year	$	70		$	64
Net income attributable to non-controlling interests	20			18
Other changes	(13		)	(15		)
Balance, end of period	$	77		$	67
TOTAL EQUITY	$	8,228		$	6,846

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

9

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 activities 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 health, retirement, talent and investments. Within the investments business, Mercer provides delegated investment (fiduciary management) solutions to institutional investors (such as retirement plan sponsors and trustees) and to individual investors (primarily through the inclusion of funds managed by Mercer on defined contribution and wealth management platforms). As of December 31, 2013, Mercer had assets under management of $103 billion worldwide. Oliver Wyman Group provides specialized management and 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.

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. While 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, 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, 2013 (the “2013 10-K”).

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 consolidated financial statements as of and for the three- and six-month periods ended June 30, 2014 and 2013.

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 $200 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. Trident II fully harvested all its portfolio investments and made final distributions to its partners during the fourth quarter of 2013. As of the end of 2013, the Company recognized all the performance fees related to its general partnership interest in Trident II. The Company recordedgains on its investment in Trident II of $20 million in the six months endedJune 30, 2013 including $15 million of deferred performance fees recognized in the first quarter of 2013. For the three months ended June 30, 2014, the Company recorded investment losses of $2 million. For the six months ended June 30, 2014, the Company recorded performance fees of $7 million from Trident III which had been deferred, and that are no longer subject to claw-back and $3 million of gains related to

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the Company's private equity investments. At June 30, 2014, the Company had deferred performance fees of approximately $37 million related to Trident III. Recognition of these deferred performance fees will only occur as the Trident III 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 second quarter of 2014 was 27.6% compared with 28.9% in the second quarter of 2013. The effective tax rates for the first six months of 2014 and 2013 were 28.6% and 29.5%, respectively. These rates reflect non-U.S. income taxed at rates below the U.S. statutory rate, including the effect of repatriation, as well as the impact of discrete tax matters such as the resolution of tax examinations and expirations of statutes of limitations.

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 decreased from

$128 million at December 31, 2013 to $105 million at June 30, 2014. It is reasonably possible that the total amount of unrecognized tax benefits will decrease between zero and approximately $7 million within the next twelve months due to settlements of audits and expirations of statutes of limitation.

During the second quarter of 2014, the Company settled the federal tax audit with the IRS for the year 2012. During the second quarter of 2013, the Company settled federal tax audits with the IRS for the years 2007 and 2009 through 2011.

Reclassifications

In the first quarter of 2014, the Company enhanced its operating cash flow presentation within the statement of cash flows to show on single lines the impact of pension and other benefit plan contributions in excess of the related expenses, and the non-cash impact of equity share awards. Previously, the cash flow impact of those items was presented as part of changes in other assets and other liabilities, and changes in other liabilities, respectively. The prior year’s presentation was conformed to the current presentation for the following line items within operating cash flows:

• Share based compensation expense

• Changes in other assets

• Contributions to pension and other benefit plans in excess of current year expense/credit

• Changes in other liabilities

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 $12 million and $14 million for the six-month periods ended June 30, 2014 and 2013, respectively. The Consulting segment recorded fiduciary interest income of $3 million and $2 million for the the six-month periods ended June 30, 2014 and 2013, 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 $8.7 billion at June 30, 2014 and $8.2 billion atDecember 31, 2013. 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 $19 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

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 June 30,				Six Months Ended June 30,
(In millions, except per share figures)	2014		2013		2014		2013
Net income from continuing operations	$	440	$	400	$	897	$	812
Less: Net income attributable to non-controlling interests	7		7		20		18
	$	433	$	393	$	877	$	794
Basic weighted average common shares outstanding	549		551		548		549
Dilutive effect of potentially issuable common shares	7		8		8		9
Diluted weighted average common shares outstanding	556		559		556		558
Average stock price used to calculate common stock equivalents	$	49.67	$	39.15	$	48.75	$	37.68

There were 20.6 million and 26.5 million stock options outstanding as of June 30, 2014 and 2013, 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 six-month periods ended June 30, 2014 and 2013.

(In millions of dollars)	2014			2013
Assets acquired, excluding cash	$	554		$	126
Liabilities assumed	(40		)	(24		)
Contingent/deferred purchase consideration	(140		)	(14		)
Net cash outflow for current year acquisitions	374			88
Deferred purchase consideration from prior years' acquisitions	9			3
Net cash outflow for acquisitions	$	383		$	91

(In millions of dollars)	2014		2013
Interest paid	$	82	$	89
Income taxes paid	$	218	$	185

The Company had non-cash issuances of common stock of $102 million and $138 million, respectively, for the six months ended June 30, 2014 and 2013, primarily related to its share-based payment plans. The Company recorded stock-based compensation expense related to equity awards of $41 million and $54 million for the six-month periods ended June 30, 2014 and 2013, respectively.

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6.    Other Comprehensive Income (Loss)

The changes in the balances of each component of Accumulated Other Comprehensive Income ("AOCI") for the three- and six-month periods ended June 30, 2014 and 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 April 1, 2014	$	5	$	(2,847	)	$	134	$	(2,708	)
Other comprehensive income (loss) before reclassifications	—		(69		)	137		68
Amounts reclassified from accumulated other comprehensive income	—		33			—		33
Net current period other comprehensive income (loss)	—		(36		)	137		101
Balance as of June 30, 2014	$	5	$	(2,883	)	$	271	$	(2,607	)

(In millions of dollars)	Unrealized Investment Gains			Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments			Total
Balance as of April 1, 2013	4			(3,267		)	(116		)	$	(3,379	)
Other comprehensive income (loss) before reclassifications	(1		)	(18		)	(84		)	(103		)
Amounts reclassified from accumulated other comprehensive income	—			47			—			47
Net current period other comprehensive income (loss)	(1		)	29			(84		)	(56		)
Balance as of June 30, 2013	$	3		$	(3,238	)	$	(200	)	$	(3,435	)

(In millions of dollars)	Unrealized Investment Gains		Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments		Total
Balance as of January 1, 2014	$	5	$	(2,682	)	$	56	$	(2,621	)
Other comprehensive income (loss) before reclassifications	—		(268		)	215		(53		)
Amounts reclassified from accumulated other comprehensive income	—		67			—		67
Net current period other comprehensive income (loss)	—		(201		)	215		14
Balance as of June 30, 2014	$	5	$	(2,883	)	$	271	$	(2,607	)

(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		)	121			(340		)	(220		)
Amounts reclassified from accumulated other comprehensive income	—			92			—			92
Net current period other comprehensive income (loss)	(1		)	213			(340		)	(128		)
Balance as of June 30, 2013	$	3		$	(3,238	)	$	(200	)	$	(3,435	)

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The components of other comprehensive income (loss) for the three- and six-month periods ended June 30, 2014 and 2013 are as follows:

Three Months Ended June 30,	2014									2013
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	136		$	(1	)	$	137		$	(85	)	$	(1	)	$	(84	)
Unrealized investment gains (losses)	—			—			—			(1		)	—			(1		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(2		)	(1		)	(1		)	(5		)	(2		)	(3		)
Net actuarial losses (a)	49			15			34			78			28			50
Subtotal	47			14			33			73			26			47
Foreign currency translation adjustments	(91		)	(20		)	(71		)	(23		)	(5		)	(18		)
Other	2			—			2			—			—			—
Pension/post-retirement plans (losses) gains	(42		)	(6		)	(36		)	50			21			29
Other comprehensive income (loss)	$	94		$	(7	)	$	101		$	(36	)	$	20		$	(56	)
(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.

Six Months Ended June 30,	2014									2013
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	207		$	(8	)	$	215		$	(345	)	$	(5	)	$	(340	)
Unrealized investment gains (losses)	—			—			—			(1		)	—			(1		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(5		)	(2		)	(3		)	(11		)	(4		)	(7		)
Net actuarial losses (a)	100			30			70			156			57			99
Subtotal	95			28			67			145			53			92
Effect of remeasurement	(166		)	(33		)	(133		)	—			—			—
Effect of curtailment	(65		)	(13		)	(52		)	—			—			—
Foreign currency translation adjustments	(108		)	(22		)	(86		)	157			36			121
Other	3			—			3			—			—			—
Pension/post-retirement plans (losses) gains	(241		)	(40		)	(201		)	302			89			213
Other comprehensive (loss) income	$	(34	)	$	(48	)	$	14		$	(44	)	$	84		$	(128	)

(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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7.     Acquisitions

The Company completed nine acquisitions during the first six months of 2014.

• January - Marsh & McLennan Agency ("MMA") acquired Barney & Barney, a San Diego-based insurance broking firm that provides insurance, risk management, and employee benefits solutions to businesses and individuals throughout the U.S. and abroad. Also in January, Marsh acquired Central Insurance Services, an independent insurance broker in Scotland that provides insurance broking and risk advisory services to companies of all sizes across industry sectors.

• February - MMA acquired Great Lakes Employee Benefits Services, Inc., an employee group benefits consulting and brokerage firm based in Michigan, and Bond Network, Inc., a surety bonding agency based in North Carolina.

• March - MMA acquired Capstone Insurance Services, LLC, an agency that provides property/casualty insurance and risk management solutions to businesses and individuals throughout South Carolina, and Mercer acquired Transition Assist, a retiree exchange specializing in helping retirees in employer-sponsored plans select Medicare supplemental health care insurance.

• May - MMA acquired Kinker-Eveleigh Insurance Agency, an Ohio-based agency specializing in property-casualty and employee benefits solutions, and VISICOR, a full-service employee benefits brokerage and consulting firm based in Texas.

• June - MMA acquired Senn Dunn Insurance, an insurance agency located in North Carolina.

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

Total purchase consideration for acquisitions made during the first six months of 2014 was $534 million, which consisted of cash paid of $394 million and deferred purchase and estimated contingent consideration of $140 million. Contingent consideration arrangements are primarily based on EBITDA and revenue targets over periods ranging from two to four years. The fair value of the contingent consideration was based on projected revenue and earnings of the acquired entities. The estimated fair values of assets acquired and liabilities assumed are subject to adjustment when purchase accounting is finalized. The Company also paid $9 million of deferred purchase consideration and $36 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 2014 based on their fair values:

For the Six Months Ended June 30, 2014
(Amounts in millions)
Cash	$	394
Estimated fair value of deferred/contingent consideration	140
Total Consideration	$	534
Allocation of purchase price:
Cash and cash equivalents	$	20
Accounts receivable, net	5
Other current assets	—
Property, plant, and equipment	3
Intangible assets	210
Goodwill	334
Other assets	2
Total assets acquired	574
Current liabilities	35
Other liabilities	5
Total liabilities assumed	40
Net assets acquired	$	534

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Prior Year Acquisitions

The Risk and Insurance Services segment completed six acquisitions during 2013.

• June - 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.

• July - Guy Carpenter acquired Smith Group, a specialist disability reinsurance risk manager and consultant based in Maine.

• September - 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.

• November - Marsh & McLennan Agency ("MMA") acquired Elsey & Associates, a Texas-based provider of surety bonds and insurance coverage to the construction industry.

• December - MMA acquired Cambridge Property and Casualty, a Michigan-based company providing insurance and risk management services to high net worth individuals and mid-sized businesses.

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

The Consulting segment completed two acquisitions during 2013.

• July - Oliver Wyman acquired Corven, a U.K.-based management consultancy firm.

• August - Mercer acquired Global Remuneration Solutions, a market leading compensation consulting firm based in South Africa.

Total purchase consideration for acquisitions made during the six months of 2013 was $109 million, which consisted of cash paid of $95 million and deferred purchase and estimated contingent consideration of $14 million. Contingent consideration arrangements are primarily based on EBITDA and revenue targets over periods ranging from two to four years. The fair value of the contingent consideration was based on projected revenue and earnings of the acquired entities. The estimated fair values of assets acquired and liabilities assumed are subject to adjustment when purchase accounting is finalized. The Company also paid $3 million of deferred purchase consideration and $5 million of 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 six months of 2014 and 2013. In accordance with accounting guidance related to pro-forma disclosure, the information presented for the 2014 acquisitions is as if they occurred on January 1, 2013 and reflects acquisitions made in 2013 as if they occurred on January 1, 2012. The unaudited 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 June 30,				Six Months Ended June 30,
(In millions, except per share figures)	2014		2013		2014		2013
Revenue	$	3,306	$	3,152	$	6,591	$	6,348
Income from continuing operations	$	440	$	406	$	900	$	823
Net income attributable to the Company	$	431	$	393	$	877	$	812
Basic net income per share:
– Continuing operations	$	0.79	$	0.72	$	1.60	$	1.46
– Net income attributable to the Company	$	0.79	$	0.71	$	1.60	$	1.48
Diluted net income per share:
– Continuing operations	$	0.78	$	0.71	$	1.58	$	1.44
– Net income attributable to the Company	$	0.78	$	0.70	$	1.58	$	1.45

16

The consolidated statements of income include the results of operations of acquired companies since their respective acquisition dates. The consolidated statement of income for the three- and six-month periods ending June 30, 2014 includes approximately $38 million of revenue and $5 million of net operating income and approximately $59 million of revenue and $6 million of net operating income, respectively, related to acquisitions made in 2014.

Subsequent Acquisition

On June 23, 2014, Mercer announced that it had entered into a definitive agreement to acquire a 34% stake in South Africa-based Alexander Forbes Group Holdings Limited ("Alexander Forbes") for approximately $312 million, becoming a strategic shareholder after Alexander Forbes successfully launched an initial public offering. Mercer will purchase its stake in Alexander Forbes in two tranches at 7.50 South African Rand per share. On July 24, 2014, the Company purchased 14.9% of Alexander Forbes common shares for approximately $140 million. The remaining 19.1% of the common shares will be purchase by early October 2014, subject to the receipt of requisite regulatory approvals. Alexander Forbes is listed on the Johannesburg Stock Exchange. In July, the Company entered into a forward contract that expires on September 30, 2014 to sell British Pounds and purchase South African Rand to lock in current foreign exchange rates for the remaining commitment. Gain or loss on the forward contract will flow through earnings in the third quarter of 2014. The investment in Alexander Forbes will be accounted for using the equity method.

Alexander Forbes principally focuses on employee benefits and investment solutions for institutional clients, and financial wellbeing and retail financial solutions for individual clients. Services include retirement funds and investment consulting, actuarial and administration services, employee risk benefits and health-care consulting, multi-manager investments solutions, and personal lines and business insurance. The range of services provided by Alexander Forbes aligns closely with Mercer's global business.

8.     Dispositions

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

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions of dollars, except per share figures)	2014			2013			2014			2013
Disposals of discontinued operations	$	—		$	(6	)	$	—		$	(5	)
Income tax expense (credit)	2			(1		)	3			(12		)
Disposals of discontinued operations, net of tax	(2		)	(5		)	(3		)	7
Discontinued operations, net of tax	$	(2	)	$	(5	)	$	(3	)	$	7
Discontinued operations, net of tax per share
– Basic	$	(0.01	)	$	—		$	(0.01	)	$	0.01
– Diluted	$	(0.01	)	$	(0.01	)	$	(0.01	)	$	0.02

The three and six months ended June 30, 2013 include estimated costs covered under the indemnity related to the Kroll sale. The six months ended June 30, 2013 also includes 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 accordance with applicable accounting guidance, the Company assesses qualitative factors to determine whether it is necessary to perform the two-step goodwill 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 of 2013 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.

17

Changes in the carrying amount of goodwill are as follows:

June 30,
(In millions of dollars)	2014		2013
Balance as of January 1, as reported	$	6,893	$	6,792
Goodwill acquired	334		62
Other adjustments(a)	3		(50		)
Balance at June 30,	$	7,230	$	6,804

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

Goodwill allocable to the Company’s reportable segments at June 30, 2014 is as follows: Risk & Insurance Services, $5 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:

	June 30, 2014						December 31, 2013
(In millions of dollars)	Gross Cost		Accumulated Amortization		Net Carrying Amount		Gross Cost		Accumulated Amortization		Net Carrying Amount
Amortized intangibles	$	1,101	$	460	$	641	$	888	$	416	$	472

Aggregate amortization expense for the six months ended June 30, 2014 and2013 was $42 million and $35 million, respectively. The estimated future aggregate amortization expense is as follows:

For the Years Ending December 31,
(In millions of dollars)	Estimated Expense
2014 (excludes amortization through June 30, 2014)	$	45
2015	86
2016	76
2017	67
2018	63
Subsequent years	304
	$	641

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 Financial Accounting Standards Board ("FASB") in Accounting Standards Codification ("ASC") Topic No. 820 ("Fair Value Measurements and Disclosures"). 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.

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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 and money market mutual funds).

Assets and liabilities utilizing Level 1 inputs include exchange-traded equity securities and mutual funds.

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).

Assets and liabilities utilizing Level 2 inputs include corporate and municipal bonds, senior notes and interest rate swaps.

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).

Liabilities utilizing Level 3 inputs include liabilities for contingent purchase consideration.

Valuation Techniques

Equity Securities and Mutual 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.

Interest Rate Swap Derivatives - 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

At June 30, 2014, the fair value of the first $250 million of Senior Notes maturing in July 2014 was estimated to be the carrying value of those notes based on discounted future cash flows using current interest rates available for debt with similar terms and remaining maturities, adjusted by the fair value of the interest rate swap derivatives, discussed above. In the first quarter of 2011, the Company entered into two interest rate swaps to 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 meeting EBITDA and revenue targets over periods ranging from two to four years. The fair value of contingent consideration is estimated as the present value of future cash flows resulting 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 June 30, 2014 and December 31, 2013.

19

	Identical Assets (Level 1)				Observable Inputs (Level 2)				Unobservable Inputs (Level 3)				Total
(In millions of dollars)	06/30/14		12/31/13		06/30/14		12/31/13		06/30/14		12/31/13		06/30/14		12/31/13
Assets:
Financial instruments owned:
Mutual funds(a)	$	150	$	154	$	—	$	—	$	—	$	—	$	150	$	154
Money market funds(b)	72		45		—		—		—		—		72		45
Interest rate swap derivatives(c)	—		—		2		3		—		—		2		3
Total assets measured at fair value	$	222	$	199	$	2	$	3	$	—	$	—	$	224	$	202
Fiduciary Assets:
Money market funds	$	14	$	—	$	—	$	—	$	—	$	—	$	14	$	—
Total fiduciary assets measured at fair value	$	14	$	—	$	—	$	—	$	—	$	—	$	14	$	—
Liabilities:
Contingent purchase consideration liability(d)	$	—	$	—	$	—	$	—	$	144	$	104	$	144	$	104
Senior Notes due 2014(e)	—		—		252		253		—		—		252		253
Total liabilities measured at fair value	$	—	$	—	$	252	$	253	$	144	$	104	$	396	$	357

^(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 six-month period ended June 30, 2014, there were no assets or liabilities that were 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 June 30, 2014 and 2013 that represent contingent consideration related to acquisitions:

(In millions of dollars)	2014			2013
Balance at January 1,	$	104		$	63
Additions	67			13
Payments	(36		)	(5		)
Revaluation Impact	9			10
Balance at June 30,	$	144		$	81

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 $9 million in the six-month period ended June 30, 2014. A 5% increase in the above mentioned projections would increase the liability by approximately $20 million. A 5% decrease in the above mentioned projections would decrease the liability by approximately $24 million.

Fair Value of Long-term Investments

The Company has certain long-term investments, primarily investments in non-publicly traded private equity funds, of $14 million at both June 30, 2014 and December 31, 2013, 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. They are included in Other assets in the consolidated balance sheets.

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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 June 30, 2014, the actual allocation for the U.S. Plan was 60% equities and equity alternatives and 40% fixed income. The target asset allocation for the U.K. Plans, which comprises approximately 82% of non-U.S. Plan assets, is 50% equities and equity alternatives and 50% fixed income. As of June 30, 2014, the actual allocation for the U.K. Plans was 48% equities and equity alternatives and 52% 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 generally uses threshold-based portfolio re-balancing to ensure the actual portfolio remains consistent with target asset allocation ranges.

After completion of a consultation period with affected colleagues, in January 2014, the Company amended its U.K. defined benefit pension plans to close those plans to future benefit accruals effective August 1, 2014 and will replace those plans, along with its existing defined contribution plans, with a new, comprehensive defined contribution arrangement. This change resulted in a curtailment of the U.K. defined benefit plans, and as required under GAAP, the Company re-measured the defined benefit plans’ assets and liabilities at the amendment date, based on assumptions and market conditions at that date. As a result of the re-measurement, the projected benefit obligation ("PBO") increased by approximately $147 million and the funded status decreased by approximately $137 million. The change in the PBO and in the funded status relates primarily to a decrease in the discount rate at the re-measurement date. The net periodic benefit costs recognized in 2014 are the weighted average resulting from the December 31, 2013 measurement and the January 2014 re-measurement. The Company recognized a curtailment gain of $65 million in the first quarter of 2014, primarily resulting from the recognition of the remaining unamortized prior service credit related to a plan amendment made in December 2012. This gain was mostly offset by the cost of a transition benefit for certain employees most impacted by the amendment, which is not part of net periodic pension cost.

21

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 June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	62		$	61		$	1		$	—
Interest cost	161			144			3			3
Expected return on plan assets	(250		)	(225		)	—			—
Amortization of prior service credit	(3		)	(6		)	—			—
Recognized actuarial loss	53			80			—			1
Net periodic benefit cost	$	23		$	54		$	4		$	4
Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	123		$	125		$	2		$	2
Interest cost	322			289			6			6
Expected return on plan assets	(498		)	(453		)	—			—
Amortization of prior service credit	(6		)	(11		)	—			—
Recognized actuarial loss	104			158			—			1
Net periodic benefit cost	$	45		$	108		$	8		$	9
Curtailment (credit)	(65		)	—			—			—
Total cost (credit)	$	(20	)	$	108		$	8		$	9
U.S. Plans only	Pension						Postretirement
For the Three Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	23		$	25		$	1		$	—
Interest cost	62			57			2			2
Expected return on plan assets	(87		)	(81		)	—			—
Amortization of prior service credit	(2		)	(4		)	—			—
Recognized actuarial loss	27			53			(1		)	—
Net periodic benefit cost	$	23		$	50		$	2		$	2

U.S. Plans only	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	45		$	52		$	1		$	1
Interest cost	125			114			4			4
Expected return on plan assets	(173		)	(162		)	—			—
Amortization of prior service credit	(4		)	(8		)	—			—
Recognized actuarial loss (gain)	53			104			(1		)	—
Net periodic benefit cost	$	46		$	100		$	4		$	5

22

Significant non-U.S. Plans only	Pension						Postretirement
For the Three Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014		2013
Service cost	$	39		$	36		$	—	$	—
Interest cost	99			87			1		1
Expected return on plan assets	(163		)	(144		)	—		—
Amortization of prior service credit	(1		)	(2		)	—		—
Recognized actuarial loss	26			27			1		1
Net periodic benefit cost	$	—		$	4		$	2	$	2

Significant non-U.S. Plans only	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014		2013
Service cost	$	78		$	73		$	1	$	1
Interest cost	197			175			2		2
Expected return on plan assets	(325		)	(291		)	—		—
Amortization of prior service cost	(2		)	(3		)	—		—
Recognized actuarial loss	51			54			1		1
Net periodic benefit cost	$	(1	)	$	8		$	4	$	4
Curtailment (credit)	(65		)	—			—		—
Total cost (credit)	$	(66	)	$	8		$	4	$	4

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
June 30,	2014		2013		2014		2013
Weighted average assumptions:
Expected return on plan assets	7.53	%	7.66	%	—	%	—	%
Discount rate	4.74	%	4.38	%	5.03	%	4.32	%
Rate of compensation increase	2.64	%	2.43	%	—	%	—	%

The Company made approximately $106 million of contributions to its U.S. and non-U.S. defined benefit plans in the first six months of 2014. The Company expects to contribute approximately $78 million to its non-qualified U.S. pension and non-U.S. pension plans during the remainder of 2014.

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12.    Debt

The Company’s outstanding debt is as follows:

(In millions of dollars)	June 30, 2014		December 31, 2013
Short-term:
Current portion of long-term debt	$	333	$	334
Long-term:
Senior notes – 5.875% due 2033	297		297
Senior notes – 5.375% due 2014	322		323
Senior notes – 5.75% due 2015	230		230
Senior notes – 2.30% due 2017	249		249
Senior notes – 9.25% due 2019	399		399
Senior notes – 4.80% due 2021	497		497
Senior notes – 2.55% due 2018	248		248
Senior notes – 4.05% due 2023	248		247
Senior notes – 3.50% due 2024	595		—
Mortgage – 5.70% due 2035	408		413
Term Loan Facility - due 2016	50		50
Other	2		2
	3,545		2,955
Less current portion	333		334
	$	3,212	$	2,621

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

In May 2014, the Company issued $600 million of 3.50%ten-year senior notes. The net proceeds of this offering were used for general corporate purposes, which included the repayment of the existing 5.375% senior notes, which matured on July 15, 2014.

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 were used for general corporate purposes, which included 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 cost for early redemption.

In February 2013, the Company repaid its 4.850%$250 million senior notes.

On March 28, 2014, the Company and certain of its foreign subsidiaries amended its $1.0 billion facility as discussed below into a $1.2 billion multi-currency five-year unsecured revolving credit facility. The interest rate on this facility is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. This facility expires in March 2019 and requires the Company to maintain certain coverage and leverage ratios which are tested quarterly. There were no borrowings outstanding under this facility at June 30, 2014.

The Company and certain of its foreign subsidiaries previously maintained a $1.0 billion multi-currency five-year revolving credit facility. The facility was previously due to expire in October 2016 and was in effect until March 2014. There were no borrowings outstanding under this facility at the time it was amended.

In December 2012, the Company closed on a $50 million, three-year term loan facility. The interest rate on this facility at June 30, 2014 was 1.28%, 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 June 30, 2014.

24

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 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 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 are deemed to be perfectly effective in accordance with applicable accounting guidance. 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. These swaps were settled in July 2014 at the time of the repayment of the senior notes. 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 June 30, 2014 and 2013 are as follows:

	2014							2013
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	$	(1	)	$	1	$	—	$	(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 short-term and long-term debt 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.

	June 30, 2014				December 31, 2013
(In millions of dollars)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Short-term debt	$	333	$	333	$	334	$	334
Long-term debt	$	3,212	$	3,480	$	2,621	$	2,819

The fair value of the Company’s short-term debt, which consists primarily of term debt maturing within the next year, approximates its carrying value. The estimated fair value of a primary portion of the Company's long-term debt is 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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13.    Restructuring Costs

The Company recorded total restructuring costs of $6 million in the first six months of 2014 primarily for future rent under non-cancelable leases. These costs were incurred in Corporate.

Details of the restructuring activity from January 1, 2013 through June 30, 2014, which includes liabilities from actions prior to 2014, are as follows:

(In millions of dollars)	Liability at 1/1/13		Amounts Accrued		Cash Paid			Other			Liability at 12/31/13		Amounts Accrued		Cash Paid			Other			Liability at 6/30/14
Severance	$	36	$	9	$	(33	)	$	(1	)	$	11	$	2	$	(5	)	$	—		$	8
Future rent under non-cancelable leases and other costs	134		13		(32		)	(2		)	113		4		(15		)	(1		)	101
Total	$	170	$	22	$	(65	)	$	(3	)	$	124	$	6	$	(20	)	$	(1	)	$	109

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 six months of 2014, the Company repurchased approximately 7 million shares of its common stock for consideration of $350 million. In May 2014, the Board of Directors of the Company authorized share repurchases of up to $2 billion of the Company's common stock. The Company remains authorized to purchase additional shares of its common stock up to a value of $1.8 billion. There is no time limit on the authorization. During the first six months of 2013, the Company repurchased 6.4 million shares of its common stock for consideration of $250 million.

15.    Claims, Lawsuits and Other Contingencies

Errors and Omissions Claims

The Company and its subsidiaries 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, the provision of investment advice and investment management services to pension plans, and the provision of consulting services relating to the drafting and interpretation of trust deeds and other documentation governing pension plans. Errors and omissions claims may 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, an internal actuarial analysis and other 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.

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Governmental Inquiries and Related Claims

In January 2005, the Company and its subsidiary Marsh Inc. (the predecessor entity to Marsh LLC) 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. All but one of these matters have been resolved.

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, in November 2013, Mercer 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 June 30, 2014, 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 2013 Form 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.

Selected information about the Company’s operating segments for the three and six-month periods ended June 30, 2014 and 2013 are as follows:

	Three Months Ended June 30,							Six Months Ended June 30,
(In millions of dollars)	Revenue				Operating Income (Loss)			Revenue				Operating Income (Loss)
2014 –
Risk and Insurance Services	$	1,791		(a)	$	448		$	3,630		(c)	$	941
Consulting	1,520			(b)	247			2,952			(d)	472
Total Operating Segments	3,311				695			6,582				1,413
Corporate / Eliminations	(11		)		(48		)	(18		)		(93		)
Total Consolidated	$	3,300			$	647		$	6,564			$	1,320
2013–
Risk and Insurance Services	$	1,688		(a)	$	421		$	3,459		(c)	$	889
Consulting	1,410			(b)	205			2,772			(d)	392
Total Operating Segments	3,098				626			6,231				1,281
Corporate / Eliminations	(10		)		(49		)	(17		)		(97		)
Total Consolidated	$	3,088			$	577		$	6,214			$	1,184

^(a)  Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $6 million in both 2014 and 2013, and equity method income of $6 million and $7 million in 2014 and 2013, respectively.

^(b)  Includes inter-segment revenue of $8 million and $7 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $2 million in 2014 and $1 million in 2013.

^(c)  Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $12 million and $14 million in 2014 and 2013, respectively, and equity method income of $6 million and $8 million in 2014 and 2013, respectively.

^(d)  Includes inter-segment revenue of $15 million and $14 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2014 and 2013, respectively.

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Details of operating segment revenue for the three- and six-month periods ended June 30, 2014 and 2013 are as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions of dollars)	2014			2013			2014			2013
Risk and Insurance Services
Marsh	$	1,495		$	1,402		$	2,952		$	2,797
Guy Carpenter	296			286			678			662
Total Risk and Insurance Services	1,791			1,688			3,630			3,459
Consulting
Mercer	1,071			1,044			2,132			2,085
Oliver Wyman Group	449			366			820			687
Total Consulting	1,520			1,410			2,952			2,772
Total Operating Segments	3,311			3,098			6,582			6,231
Corporate/ Eliminations	(11		)	(10		)	(18		)	(17		)
Total	$	3,300		$	3,088		$	6,564		$	6,214

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17.    New Accounting Guidance

In June 2014, the FASB issued new accounting guidance to clarify the treatment of share-based payment awards that require a specific performance target to be achieved in order for employees to be eligible to vest in the awards which include terms that may provide that the performance conditions could be achieved after an employee completes the requisite service period. The guidance requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. As such, a reporting entity should apply the existing guidance as it relates to awards with performance conditions that affect vesting. The guidance is effective for annual periods beginning after December 15, 2015. Earlier adoption is permitted. Adoption of the guidance is not expected to materially affect the Company's financial condition, results of operations or cash flows.

In May 2014, the FASB issued new accounting guidance to clarify the principles for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that principle, the entity should apply the following steps: identify the contract(s) with the customer, identify the performance obligations in the contract(s), determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when (or as) the entity satisfies a performance obligation. The guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. Entities are permitted to adopt the guidance under one of the following methods: retrospectively to each prior reporting period presented (with certain practical expedients allowed) or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application. If an entity elects this transition method, it must provide disclosures in reporting periods that include the date of initial application of the amount by which each financial statement line item is affected in the current reporting period by application of the guidance as compared to guidance that was in effect before the change, and an explanation for the reasons for significant changes. The Company is currently evaluating the impact of the adoption of the guidance on its financial condition and results of operations.

In April 2014, the FASB issued new accounting guidance which changes the criteria for reporting discontinued operations and enhances disclosures in this area. Under the new guidance, only disposals representing a strategic shift in operations, such as disposal of a major geographic area or a major line of business, should be presented as discontinued operations. Those strategic shifts should have a major impact on the organization's operations and financial results. In addition, the new guidance requires expanded disclosures about discontinued operations. The guidance is effective for fiscal years beginning on or after December 15, 2014. Adoption of the guidance is not expected to materially affect the Company's financial condition, results of operations or cash flows.

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 did not have a material impact on the Company's financial statements.

In July 2013, the FASB issued new accounting guidance which amends the criteria for an entity to qualify as an investment company. The guidance clarifies the characteristics of an investment company, provides comprehensive guidance to determine whether an entity is an investment company and sets measurement and disclosure requirements for investment companies. The guidance is effective for interim and annual reporting periods beginning after December 13, 2013. The adoption of this new guidance did not have a material impact on the Company's financial statements.

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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 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 55,000 employees worldwide and annual revenue of more than $12 billion, the Company provides analysis, advice and transactional capabilities to clients in over 130 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 products, and specialized management and economic consulting services. We conduct business in this segment through Mercer and Oliver Wyman Group.

The Company completed nine acquisitions during the first six months of 2014.

In January 2014, Marsh & McLennan Agency ("MMA") acquired Barney & Barney, a San Diego-based insurance broking firm that provides insurance, risk management, and employee benefits solutions to businesses and individuals throughout the U.S. and abroad. Also in January, Marsh acquired Central Insurance Services, an independent insurance broker in Scotland that provides insurance broking and risk advisory services to companies of all sizes across industry sectors. In February 2014, MMA acquired Great Lakes Employee Benefits Services, Inc., an employee group benefits consulting and brokerage firm based in Michigan, and Bond Network, Inc., a leading surety bonding agency based in North Carolina. In March 2014, MMA acquired Capstone Insurance Services, LLC, an agency that provides property/casualty insurance and risk management solutions to businesses and individuals throughout South Carolina, and Mercer acquired Transition Assist, a retiree exchange specializing in helping retirees in employer-sponsored plans select Medicare supplemental health care insurance. In May 2014, MMA acquired Kinker-Eveleigh Insurance Agency, an Ohio-based agency specializing in property-casualty and employee benefits solutions, and VISICOR, a full-service employee benefits brokerage and consulting firm based in Texas. In June 2014, MMA acquired Senn Dunn Insurance, an insurance agency located in North Carolina.

A reconciliation of segment operating income to total operating income is included in Note 16 to the consolidated financial statements included in Part I Item 1 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

	Second Quarter						Six Months
(In millions, except per share figures)	2014			2013			2014			2013
Revenue	$	3,300		$	3,088		$	6,564		$	6,214
Expense:
Compensation and Benefits	1,876			1,766			3,715			3,569
Other Operating Expenses	777			745			1,529			1,461
Operating Expenses	2,653			2,511			5,244			5,030
Operating Income	647			577			1,320			1,184
Income from Continuing Operations	440			400			897			812
Discontinued Operations, net of tax	(2		)	(5		)	(3		)	7
Net Income Before Non-Controlling Interests	438			395			894			819
Net Income Attributable to the Company	$	431		$	388		$	874		$	801
Income From Continuing Operations Per Share:
Basic	$	0.79		$	0.71		$	1.60		$	1.45
Diluted	$	0.78		$	0.70		$	1.58		$	1.42
Net Income Per Share Attributable to the Company:
Basic	$	0.78		$	0.71		$	1.59		$	1.46
Diluted	$	0.77		$	0.69		$	1.57		$	1.44
Average Number of Shares Outstanding:
Basic	549			551			548			549
Diluted	556			559			556			558
Shares Outstanding at June 30	546			549			546			549

The Company's consolidated operating income increased 12% to $647 million in the second quarter of 2014 compared with $577 million in the prior year. This represents the effect of a 7% increase in revenue and a 6% increase in expenses compared to the same period last year. Risk and Insurance Services operating income increased $27 million or 6%, while Consulting increased $42 million or 20% compared with the same period last year.

Income from continuing operations increased 10% in the second quarter of 2014, primarily reflecting the increase in operating income discussed above and a slightly lower effective tax rate, partly offset by lower investment income. Diluted net income per share from continuing operations also increased 11% to $0.78, reflecting the increase in income from continuing operations and a slight decrease in average number of diluted shares outstanding. Shares issued related to the vesting of share awards and exercise of employee stock options were more than offset by share repurchases over the past four quarters.

Consolidated operating income was approximately $1.3 billion for the first six months of 2014 compared with consolidated operating income of $1.2 billion in the prior year, reflecting increases of $52 million in Risk and Insurance Services and $80 million in Consulting.

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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, certain items that affect comparability, such as the revenue impact of acquisitions and dispositions, including transfers among businesses, may impact period-to-period comparisons of revenue. Underlying revenue measures the change in revenue from one period to another by isolating these impacts. The impact of foreign currency exchange fluctuations, acquisitions and dispositions, including transfers among businesses, on the Company’s operating revenues by segment was as follows:

	Three Months Ended June 30,						% Change GAAP Revenue		Components of Revenue Change*
									Currency Impact		Acquisitions/ Dispositions Impact		Underlying Revenue
(In millions of dollars)	2014			2013
Risk and Insurance Services
Marsh	$	1,490		$	1,397		7	%	(1	)%	4	%	4	%
Guy Carpenter	295			285			3	%	1	%	—		2	%
Subtotal	1,785			1,682			6	%	—		3	%	4	%
Fiduciary Interest Income	6			6
Total Risk and Insurance Services	1,791			1,688			6	%	—		3	%	4	%
Consulting
Mercer	1,071			1,044			3	%	1	%	—		2	%
Oliver Wyman Group	449			366			23	%	3	%	3	%	17	%
Total Consulting	1,520			1,410			8	%	1	%	1	%	6	%
Corporate/Eliminations	(11		)	(10		)
Total Revenue	$	3,300		$	3,088		7	%	—		2	%	5	%

	Three Months Ended June 30,				% Change GAAP Revenue		Components of Revenue Change*
							Currency Impact		Acquisitions/ Dispositions Impact		Underlying Revenue
(In millions of dollars)	2014		2013
Marsh:
EMEA	$	478	$	455	5	%	3	%	1	%	1	%
Asia Pacific	194		184		6	%	(3	)%	—		9	%
Latin America	102		88		16	%	(11	)%	11	%	16	%
Total International	774		727		7	%	—		2	%	5	%
U.S. / Canada	716		670		7	%	(1	)%	5	%	3	%
Total Marsh	$	1,490	$	1,397	7	%	(1	)%	4	%	4	%
Mercer:
Health	$	393	$	376	4	%	—		1	%	4	%
Retirement	345		338		2	%	2	%	(1	)%	1	%
Talent	123		133		(7	)%	(1	)%	(1	)%	(5	)%
Investments	210		197		7	%	(1	)%	1	%	6	%
Total Mercer	$	1,071	$	1,044	3	%	1	%	—		2	%

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

33

	Six Months Ended June 30,						% Change GAAP Revenue		Components of Revenue Change*
									Currency Impact		Acquisitions/ Dispositions Impact		Underlying Revenue
(In millions of dollars)	2014			2013
Risk and Insurance Services
Marsh	$	2,942		$	2,785		6	%	(1	)%	3	%	4	%
Guy Carpenter	676			660			2	%	—		1	%	1	%
Subtotal	3,618			3,445			5	%	(1	)%	3	%	3	%
Fiduciary Interest Income	12			14
Total Risk and Insurance Services	3,630			3,459			5	%	(1	)%	3	%	3	%
Consulting
Mercer	2,132			2,085			2	%	—		—		3	%
Oliver Wyman Group	820			687			19	%	2	%	3	%	14	%
Total Consulting	2,952			2,772			6	%	—		1	%	6	%
Corporate/Eliminations	(18		)	(17		)
Total Revenue	$	6,564		$	6,214		6	%	—		2	%	4	%

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

	Six Months Ended June 30,				% Change GAAP Revenue		Components of Revenue Change*
							Currency Impact		Acquisitions/ Dispositions Impact		Underlying Revenue
(In millions of dollars)	2014		2013
Marsh:
EMEA	$	1,095	$	1,049	4	%	2	%	1	%	2	%
Asia Pacific	345		331		4	%	(5	)%	—		9	%
Latin America	186		166		12	%	(13	)%	11	%	14	%
Total International	1,626		1,546		5	%	(1	)%	2	%	5	%
U.S. / Canada	1,316		1,239		6	%	(1	)%	4	%	3	%
Total Marsh	$	2,942	$	2,785	6	%	(1	)%	3	%	4	%
Mercer:
Health	$	781	$	757	3	%	—		—		3	%
Retirement	702		681		3	%	1	%	—		2	%
Talent	240		256		(6	)%	(2	)%	(1	)%	(3	)%
Investments	409		391		5	%	(3	)%	1	%	7	%
Total Mercer	$	2,132	$	2,085	2	%	—		—		3	%

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

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Revenue

Consolidated revenue for the second quarter of 2014 was $3.3 billion, increases of 7% on a reported basis and 5% on an underlying basis from the second quarter of 2013.

Revenue in the Risk and Insurance Services segment for the second quarter of 2014 was $1.8 billion, an increase of 6% from the same period last year, or 4% on an underlying basis. Marsh produced underlying revenue growth across all major geographies. Guy Carpenter's revenue was $295 million, an increase of 3% from the prior year, or 2% on an underlying basis. Consulting revenue of $1.5 billion in the second quarter of 2014 increased 8% from the second quarter of 2013. On an underlying basis, Consulting revenue increased 6%, reflecting increases of 2% in Mercer and 17% in Oliver Wyman.

For the first six months of 2014, Risk & Insurance Services revenue increased 5% from the same period in 2013, and 3% on an underlying basis. Consulting revenue increased 6% compared with the six-month period last year. On an underlying basis, Consulting revenue increased 6%, reflecting a 3% increase at Mercer and a 14% increase at Oliver Wyman.

Operating Expense

Consolidated operating expense in the second quarter increased 6% 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, facilities and software amortization costs, partly offset by lower pension costs.

Risk and Insurance Services

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

For the Three and Six Months Ended June 30,	Second Quarter						Six Months
(In millions of dollars)	2014			2013			2014			2013
Revenue	$	1,791		$	1,688		$	3,630		$	3,459
Compensation and Benefits	943			878			1,884			1,797
Other Expenses	400			389			805			773
Expense	1,343			1,267			2,689			2,570
Operating Income	$	448		$	421		$	941		$	889
Operating Income Margin	25.0		%	24.9		%	25.9		%	25.7		%

Revenue

Revenue in the Risk and Insurance Services segment in the second quarter of 2014 was $1.8 billion, an increase of 6%, or 4% on an underlying basis, compared with the same period in 2013.

In Marsh, revenue in the second quarter of 2014 was $1.5 billion, an increase of 7% compared with the same quarter of the prior year, or 4% on an underlying basis. The international division grew 5% on an underlying basis, led by growth of 16% in Latin America, 9% in Asia Pacific and 1% in EMEA. Underlying revenue increased 3% in the U.S. / Canada division. Guy Carpenter's second quarter revenue was $295 million, an increase of 3% compared to the same period in the prior year, or 2% on an underlying basis, reflecting growth in international operations.

Revenue in the Risk & Insurance Services segment increased 5% in the first six months of 2014 compared with 2013, or 3% on an underlying basis.

Expense

Expenses in the Risk and Insurance Services segment increased 6% in the second quarter of 2014 compared with the same period in the prior year, reflecting a 2% increase on an underlying basis and a 3% increase from acquisitions. The underlying expense increase reflects higher base salary, incentive compensation, facilities and intangible asset amortization expense, partly offset by lower pension costs and adjustments to acquisition-related contingent consideration liabilities.

Expenses for the six-month period in 2013 increased 5% compared to the prior year, reflecting a 2% increase in underlying expenses and a 3% 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, incentive compensation, facilities and intangible asset amortization expenses, partly offset by lower pension costs.

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Consulting

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

For the Three and Six Months Ended June 30,	Second Quarter						Six Months
(In millions of dollars)	2014			2013			2014			2013
Revenue	$	1,520		$	1,410		$	2,952		$	2,772
Compensation and Benefits	851			806			1,664			1,602
Other Expenses	422			399			816			778
Expense	1,273			1,205			2,480			2,380
Operating Income	$	247		$	205		$	472		$	392
Operating Income Margin	16.2		%	14.5		%	16.0		%	14.2		%

Revenue

Consulting revenue in the second quarter of 2014 increased 8%, or 6% on an underlying basis, compared with the same period in 2013. Mercer's revenue was $1.1 billion in the second quarter of 2014, an increase of 3%, or 2% on an underlying basis, 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 4% and 6%, respectively. Oliver Wyman's revenue increased 23% to $449 million in the second quarter of 2014, or 17% on an underlying basis.

Consulting revenue in the first six months of 2014 increased 6% on both a reported and underlying basis compared with the same period in 2013, with underlying growth of 3% in Mercer and 14% in Oliver Wyman.

Expense

Consulting expenses in the second quarter of 2014 increased 6%, or 4% on an underlying basis, compared with the same period in 2013. The underlying expense increase in the second quarter of 2014 is primarily due to higher incentive compensation costs, partly offset by lower pension costs.

Expenses for the six months of 2014 increased 4% as compared to the same period in 2013.

Corporate and Other

Corporate expenses in the second quarter of 2014 were $48 million compared with $49 million in the prior year. Lower pension and benefits costs were largely offset by the cost of a hedge transaction related to the planned Alexander Forbes investment.

Expenses for the first six months of 2014 decreased to $93 million from $97 million in 2013, primarily due to lower pension and benefit costs as compared with the same period last year. 

Interest

Interest income earned on corporate funds was $5 million in the second quarter of 2014 compared with $4 million in the second quarter of 2013 reflecting a higher level of invested funds, partly offset by lower effective interest rates. Interest expense increased $2 million in 2014 compared with the second quarter of 2013. The increase is due to a higher level of debt during the second quarter of 2014.

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 equity method gains or losses on its investment in private equity. The Company's investments may include direct investments in insurance or consulting companies and investments in private equity funds. Trident II fully harvested all its remaining portfolio investments and made final distributions to its partners during the fourth quarter of 2013. As of the end of 2013, the Company had recognized all the performance fees related to its general partnership interest in Trident II. The Company recorded gains on its investment in Trident II of $20 million, including $15 million of deferred performance fees, for the six months ended June 30, 2013. Investment income for the six months ended June 30, 2014 includes performance fees of $7 million from Trident III, which had been deferred, that are no longer subject to claw-back. In 2013, the Company recorded $21 million of performance fees during the three and six months ended June 30, 2013.

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Investment income for the six months of 2014 also includes $3 million of mark-to-market gains in the Company's private equity investments. At June 30, 2014, the Company had deferred performance fees ofapproximately$37 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. Although the Company expects to recognize approximately $25 million of performance fees in the third quarter of 2014, the timing of recognition of the remaining deferred performance fees is unknown and is not controlled by the Company.

Income Taxes

The Company's effective tax rate in the second quarter of 2014 was 27.6% compared with 28.9% in the second quarter of 2013. The effective tax rate for the six months of 2014 was 28.6% compared with 29.5% for the first six months of 2013. The rates reflect non-U.S. income taxed at rates below the U.S. statutory rate, including the effect of repatriation, as well as 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 2014, the forecasted pre-tax income in the U.K., Canada, Australia, France, Germany and Bermuda, is 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 21%, 27%, 30%, 41%, 32% and 0%, respectively. Consequently, increases in pre-tax income of the Company's U.S.-based operations at a rate higher than operations outside of the U.S. would tend to result in higher effective tax rates. 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 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 decreased from $128 million at December 31, 2013 to $105 million at June 30, 2014. It is reasonably possible that the total amount of unrecognized tax benefits will decrease between zero and approximately $7 million within the next twelve months due to settlements of audits and expirations of statutes of limitation.

During the second quarter of 2014, the Company settled the federal tax audit with the IRS for the year 2012. During the second quarter of 2013, the Company settled federal tax audits with the IRS for the years 2007 and 2009 through 2011.

Dispositions

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

	Second Quarter						Six Months
(In millions of dollars, except per share figures)	2014			2013			2014			2013
Disposals of discontinued operations	$	—		$	(6	)	$	—		$	(5	)
Income tax expense (credit)	2			(1		)	3			(12		)
Disposals of discontinued operations, net of tax	(2		)	(5		)	(3		)	7
Discontinued operations, net of tax	$	(2	)	$	(5	)	$	(3	)	$	7
Discontinued operations, net of tax per share
– Basic	$	(0.01	)	$	—		$	(0.01	)	$	0.01
– Diluted	$	(0.01	)	$	(0.01	)	$	(0.01	)	$	0.02

The three and six months ended June 30, 2013 include estimated costs covered under the indemnity related to the Kroll sale. The six months ended June 30, 2013 also includes tax indemnities related to the Putnam sale.

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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, for share repurchases 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, 2013, the Company had approximately $1.4 billion of cash and cash equivalents in its foreign operations, substantially all of which is considered to be permanently invested in those operations to fund foreign investments and working capital needs. At the current time, the Company does not intend to repatriate any of this cash. The non-U.S. cash and cash equivalents considered permanently reinvested includes approximately $200 million of operating funds required to be maintained for regulatory requirements or as collateral under certain captive insurance arrangements. The Company expects to continue its practice of repatriating foreign funds out of current annual earnings. The analysis of the portion of 2014 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 and cash equivalents on our 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.

Operating Cash Flows

The Company generated $258 million of cash from operations for the six months ended June 30, 2014, compared with $163 million used by operations for the same period in 2013. 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 six months of 2014, the Company contributed $94 million to its non-U.S. pension plans and $12 million to its U.S. pension plans. During the first six months of 2013, the Company contributed $460 million to its non-U.S. pension plans and $13 million to its U.S. plans, including a contribution of $250 million to prefund its 2014, and a substantial portion of its 2015, deficit funding contribution for its U.K. pension plans and a $70 million discretionary contribution to its Canadian 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 made a $0.2 million required contribution to its U.S. tax-qualified plan in the first quarter 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 82% 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 actuarial valuation of the plans. This process is governed by U.K. pension regulations. The assumptions that result from the funding negotiations are different from those used for U.S. GAAP and currently result in a lower funded status than under U.S. GAAP. In March 2014, the Company and the Trustee of the U.K. Defined Benefit Plans agreed to the outcome of the December 31, 2012 valuation and to a funding deficit recovery plan. The recovery plan sets out the maximum annual deficit contributions which would be due based on the deficit as at December 31, 2012. However, the funding agreement includes a provision for the

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funding level to be assessed on November 1^st each year. If the funding level on November 1^st has sufficiently improved, no deficit funding contributions will be required in the following year, and the contribution amount will be deferred.

As a result of the significant improvement in funded status during 2013, which includes the $250 million deficit funding contribution discussed above, no additional deficit recovery contributions are required in 2014. The next funding test will be carried out as at November 1, 2014 to assess the deficit contributions payable during 2015. Deficit recovery contributions in 2015 can range from $0 to a maximum of $58.2 (£35.3) million. The U.K. employers also contribute an expense allowance each year of approximately $9 million.

The Company expects to fund an additional $66 million to its non-U.S. plans over the remainder of 2014, including approximately $35 million to the U.K. plans, related to the service cost for benefits earned through July 31, 2014, the date on which future benefit accrual will cease.

After completion of a consultation period with affected colleagues, in January 2014, the Company amended its U.K. defined benefit pension plans to close those plans to future benefit accruals effective August 1, 2014 and will replace those plans, along with its existing defined contribution plans, with a new, comprehensive defined contribution arrangement. This change resulted in a curtailment of the U.K. defined benefit plans, and as required under GAAP, the Company re-measured the defined benefit plans’ assets and liabilities at the amendment date, based on assumptions and market conditions at that date. As a result of the re-measurement, the Projected Benefit Obligation ("PBO") increased by approximately $147 million and the funded status decreased by approximately $137 million. The change in the PBO and in the funded status relates primarily to a decrease in the discount rate at the re-measurement date. The net periodic benefit costs to be recognized in 2014 are based on a weighted average resulting from the December 31, 2013 measurement and the January 2014 re-measurement. The Company recognized a curtailment gain of $65 million in the first quarter of 2014, primarily resulting from the recognition of the remaining unamortized prior service credit related to a plan amendment made in December 2012. This gain was largely offset by the cost of a transition benefit to certain employees most impacted by the amendment. As a result of the amendments to the U.K. plans, the Company expects an increase in contributions to its defined contribution plans of approximately $30 million related to the transfer of colleagues from defined benefit to defined contribution plans, and funding of a portion of the transition benefit.

Financing Cash Flows

Net cash provided by financing activities was $9 million for the period ended June 30, 2014, compared with $592 million net cash used for the same period in 2013.

During the second quarter of 2014, the Company issued $600 million of 3.5% ten-year senior notes. A portion of the net proceeds of this offering will be used for general corporate purposes including the repayment of $320 million of 5.375% senior notes that matured in July 2014.

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

On March 28, 2014, the Company and certain of its foreign subsidiaries amended the $1.0 billion facility discussed below, into a new $1.2 billion multi-currency five-year unsecured revolving credit facility. The interest rate on this facility is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. This facility expires in March 2019 and requires the Company to maintain certain coverage and leverage ratios which are tested quarterly. There were no borrowings outstanding under this facility at June 30, 2014.

The Company and certain of its foreign subsidiaries previously maintained a $1.0 billion multi-currency five-year revolving credit facility. The facility was previously due to expire in October 2016 and was in effect until March 2014. There were no borrowings outstanding under this facility at the time it was amended.

In December 2012, the Company closed on a $50 million, three-year delayed draw term loan facility. The interest rate on this facility is based on LIBOR plus an agreed 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 current revolving credit facility discussed above. The Company had $50 million of borrowings under this facility at June 30, 2014.

The Company's senior debt is currently rated Baa1 by Moody's and A- 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 stable outlook from Moody's and Standard & Poor's.

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During the first six months of 2014, the Company paid $36 million of contingent payments related to acquisitions made in prior periods. These payments are split between financing and operating cash flows in the consolidated statements of cash flows. The portion of these payments reflected as a financing activity is $24 million, which represents payments related to the contingent consideration liability that was recorded on the date of acquisition. Payments related to increases in the contingent consideration liability subsequent to the date of acquisition, which were $12 million for the first six months of 2014, are reflected as operating cash flows. In the first six months of 2013, the Company paid $5 million of contingent payments related to acquisitions made in prior periods.

During the first six months of 2014, the Company repurchased approximately 7 million shares of its common stock for consideration of $350 million. In May 2014, the Board of Directors increased the Company's share repurchase program to $2 billion. The Company remains authorized to purchase additional shares of its common stock up to a value of $1.8 billion. There is no time limit on this authorization. During the first six months of 2013, the Company repurchased 6.4 million shares of its common stock for total consideration of $250 million.

The Company paid dividends on its common shares of $275 million ($0.50 per share) during the first six months of 2014, as compared with $255 million ($0.46 per share) during the first six months of 2013.

Investing Cash Flows

Net cash used for investing activities amounted to $581 million in the first six months of 2014, compared with $194million used during the same period in 2013.

The Company, made nine acquisitions during the first six months of 2014. Cash used for these acquisitions, net of cash acquired, was $374 million. In addition, in the first six months of 2014, the Company paid $9 million of deferred purchase consideration related to acquisitions made in prior years. Remaining deferred cash payments of approximately $103 million and estimated future contingent consideration payments of $144 million for acquisitions completed in the first six months of 2014 and in prior years are recorded in accounts payable and accrued liabilities or other liabilities in the consolidated balance sheet at June 30, 2014.

The Company madetwo acquisitions during the first six months of 2013. Cash used for these acquisitions, net of cash acquired was $88 million. In addition, in the first six months of 2013, the Company paid $3 million of deferred purchase consideration related to acquisitions made in prior years.

The Company used cash of $202 million to purchase fixed assets and capitalized software in the first six months of 2014, compared with $192 million in the first six months of 2013, 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 $23 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 June 30, 2014 (In millions of dollars):

	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	$	331	$	331	$	—	$	—	$	—
Long-term debt	3,229		—		553		675		2,001
Interest on long-term debt	1,389		168		295		271		655
Net operating leases	2,207		329		543		422		913
Service agreements	534		202		201		116		15
Other long-term obligations	343		92		167		82		2
Acquisitions	312		312		—		—		—
Purchases commitments	15		15		—		—		—
Total	$	8,360	$	1,449	$	1,759	$	1,566	$	3,586

The above does not include unrecognized tax benefits of $105 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

40

$4 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 $851 million 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 $12 million and $66 million to its U.S. and non-U.S. pension plans, respectively, in the remainder of 2014.

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.

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Item 3. Quantitative and Qualitative 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 paid the Company a fixed rate of 5.375% and the Company paid 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)	June 30, 2014
Cash and cash equivalents invested in money market funds, certificates of deposit and time deposits	$	2,005
Fiduciary cash and investments	$	5,237

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 $2 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 in response 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 55% of total revenue. We periodically use forward contracts 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 tend 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 $14 million are accounted for using the cost method and $89 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.

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Other

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

Item 4. Controls & Procedures.

a. Evaluation of Disclosure Controls and Procedures

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

b. Changes in Internal Control

There were no changes in the Company’s internal control over financial reporting identified in connection with the evaluation required by Rules 13a-15(d) or 15d-15(d) under the Securities Exchange Act of 1934 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, 2013. 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 2014, the Board of Directors of the Company authorized share repurchases up to a dollar value of $2 billion of the Company's common stock. The Company repurchased approximately 5.0 million shares of its common stock for $250 million during the second quarter of 2014. The Company remains authorized to repurchase shares of its common stock up to a dollar value of approximately $1.8 billion. 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
April 1-30, 2014	—	—		—	$	462,522,386
May 1-31, 2014	2,102,525	$	49.0982	2,102,525	$	1,943,987,186
June 1-30, 2014	2,856,850	$	51.3664	2,856,850	$	1,797,241,016
Total Q2 2014	4,959,375	$	50.4048	4,959,375	$	1,797,241,016

44

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.

45

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:	August 4, 2014	/s/ J. Michael Bischoff
		J. Michael Bischoff
		Chief Financial Officer
Date:	August 4, 2014	/s/ Robert J. Rapport
		Robert J. Rapport
		Senior Vice President & Controller
		(Chief Accounting Officer)

46

EXHIBIT INDEX

Exhibit No.	Exhibit Name
4.1	Form of Fourth Supplemental Indenture between Marsh & McLennan Companies, Inc. (the "Company") and The Bank of New York Mellon, as trustee (incorporated by reference to the Company's Current Report on Form 8-K dated May 27, 2014)
10.1	Description of compensation arrangements for independent directors of Marsh & McLennan Companies, Inc. effective June 1, 2014
10.2	Letter Agreement, effective as of May 14, 2014, between Marsh & McLennan Companies, Inc. and Daniel S. Glaser
10.3	Letter Agreement, effective as of May 14, 2014, between Marsh & McLennan Companies, Inc. and J. Michael Bischoff
10.4	Letter Agreement, effective as of May 14, 2014, between Marsh & McLennan Companies, Inc. and Peter Zaffino
10.5	Letter Agreement, effective as of May 14, 2014, between Marsh & McLennan Companies, Inc. and Julio A. Portalatin
10.6	Letter Agreement, effective as of May 14, 2014, between Marsh & McLennan Companies, Inc. and Alexander Moczarski
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

47

EX-10.1

Exhibit 10.1

Description of Compensation Arrangements for Independent Directors

Effective June 1, 2014, which will be the start of the Board’s annual pay cycle, Marsh & McLennan Companies, Inc. (the “Company”) will compensate its independent directors as follows:

Basic Annual Retainer. All independent directors will receive a basic annual retainer of $110,000.

Annual Stock Grant. On June 1 of each year, all independent directors will receive an annual grant of the Company’s common stock with a market value of $140,000 on the grant date.

Supplemental Annual Retainers for Audit and Compensation Committee Chairs. The chairs of the Board’s audit and compensation committees will each receive a supplemental annual retainer of $25,000.

Supplemental Annual Retainers for Committee Chairs. The chairs of the Board’s finance, directors and governance and corporate responsibility committees will each receive a supplemental annual retainer of $15,000.

Supplemental Annual Retainer for Non-Executive Chairman. The Board’s independent chairman will receive a supplemental annual retainer of $200,000.

Under the terms of the Company’s Directors’ Stock Compensation Plan, each director may elect to receive his or her basic annual retainer and any supplemental annual retainer in cash, common stock or a combination thereof.

EX-10.2

Exhibit 10.2

June 11, 2014

Daniel S. Glaser

[Address]

[City, State, Zip Code]

Subject:    Terms of Employment

Dear Dan:

This amendment to the Letter Agreement, dated September 18, 2013, between you and Marsh & McLennan Companies, Inc. (the “2013 Letter Agreement”) revises the terms and conditions of your employment by Marsh & McLennan Companies, Inc. The 2013 Letter Agreement will continue to govern your employment, except as specified below, effective as of May 14, 2014:

1. Exhibit A to the 2013 Letter Agreement shall be deleted and replaced in its entirety with the attached Exhibit A.

Please acknowledge your agreement with the terms of this letter agreement by signing and dating below and the enclosed copy and returning one executed document to me on or before June 25, 2014.

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)        

June 13, 2014                

(Date)

June 11, 2014

Daniel S. Glaser

Page 2

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 $8,000,000, commencing with the award made in 2015.
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-10.3

Exhibit 10.3

June 6, 2014

J. Michael Bischoff

[Address]

[City, State, Zip Code]

Subject:    Terms of Employment

Dear Mike:

This amendment to the Letter Agreement, dated November 21, 2013, between you and Marsh & McLennan Companies, Inc. (the “2013 Letter Agreement”) revises the terms and conditions of your employment by Marsh & McLennan Companies, Inc. The 2013 Letter Agreement will continue to govern your employment, except as specified below, effective as of May 14, 2014:

1. Exhibit A to the 2013 Letter Agreement shall be deleted and replaced in its entirety with the attached Exhibit A.

Please acknowledge your agreement with the terms of this letter agreement by signing and dating below and the enclosed copy and returning one executed document to me on or before June 20, 2014.

Sincerely,

/s/ Daniel S. Glaser

Daniel S. Glaser

President and Chief Executive Officer

Marsh & McLennan Companies, Inc.

Accepted and Agreed:

/s/ J. Michael Bischoff            

(Signature)        

June 9, 2014                

(Date)

June 6, 2014

J. Michael Bischoff

Page 2

Exhibit A

Annual Base Salary	$750,000 (effective April 1, 2014)
Annual Target Bonus Opportunity	Bonus awards are discretionary. Anticipated target bonus of $1,250,000 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 $1,000,000, commencing with the award made in 2015.

EX-10.4

Exhibit 10.4

June 6, 2014

Peter Zaffino

[Address]

[City, State, Zip Code]

Subject:    Terms of Employment

Dear Peter:

This amendment to the Letter Agreement, dated November 21, 2013, between you and Marsh & McLennan Companies, Inc. (the “2013 Letter Agreement”) revises the terms and conditions of your employment by Marsh & McLennan Companies, Inc. The 2013 Letter Agreement will continue to govern your employment, except as specified below, effective as of May 14, 2014:

1. Exhibit A to the 2013 Letter Agreement shall be deleted and replaced in its entirety with the attached Exhibit A.

Please acknowledge your agreement with the terms of this letter agreement by signing and dating below and the enclosed copy and returning one executed document to me on or before June 20, 2014.

Sincerely,

/s/ Daniel S. Glaser

Daniel S. Glaser

President and Chief Executive Officer

Marsh & McLennan Companies, Inc.

Accepted and Agreed:

/s/ Peter Zaffino            

(Signature)        

June 10, 2014                

(Date)

June 6, 2014

Peter Zaffino

Page 2

Exhibit A

Annual Base Salary	$1,000,000 (effective April 1, 2014)
Annual Target Bonus Opportunity	Bonus awards are discretionary. Anticipated target bonus of $2,250,000 commencing with the 2014 performance year (awarded in 2015). Actual bonus may range from 0% - 200% of target, based on achievement of individual performance objectives, Marsh’s performance 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 $3,000,000, commencing with the award made in 2015.

EX-10.5

Exhibit 10.5

June 6, 2014

Julio A. Portalatin

[Address]

[City, State, Zip Code]

Subject:    Terms of Employment

Dear Julio:

This amendment to the Letter Agreement, dated November 21, 2013, between you and Marsh & McLennan Companies, Inc. (the “2013 Letter Agreement”) revises the terms and conditions of your employment by Marsh & McLennan Companies, Inc. The 2013 Letter Agreement will continue to govern your employment, except as specified below, effective as of May 14, 2014:

1. Exhibit A to the 2013 Letter Agreement shall be deleted and replaced in its entirety with the attached Exhibit A.

Please acknowledge your agreement with the terms of this letter agreement by signing and dating below and the enclosed copy and returning one executed document to me on or before June 20, 2014.

Sincerely,

/s/ Daniel S. Glaser

Daniel S. Glaser

President and Chief Executive Officer

Marsh & McLennan Companies, Inc.

Accepted and Agreed:

/s/ Julio A. Portalatin            

(Signature)        

June 9, 2014                

(Date)

June 6, 2014

Julio A. Portalatin

Page 2

Exhibit A

Board or Committee Memberships	Hofstra University Board of Trustees
Annual Base Salary	$900,000 (effective April 1, 2014)
Annual Target Bonus Opportunity	Bonus awards are discretionary. Anticipated target bonus of $1,700,000 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, Mercer’s performance 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 $2,000,000, commencing with the award made in 2015.

EX-10.6

Exhibit 10.6

June 6, 2014

Alexander Moczarski

[Address]

[City, State, Zip Code]

Subject:    Terms of Employment

Dear Alex:

This amendment to the Letter Agreement, dated November 21, 2013, between you and Marsh & McLennan Companies, Inc. (the “2013 Letter Agreement”) revises the terms and conditions of your employment by Marsh & McLennan Companies, Inc. The 2013 Letter Agreement will continue to govern your employment, except as specified below, effective as of May 14, 2014:

1. Exhibit A to the 2013 Letter Agreement shall be deleted and replaced in its entirety with the attached Exhibit A.

Please acknowledge your agreement with the terms of this letter agreement by signing and dating below and the enclosed copy and returning one executed document to me on or before June 20, 2014.

Sincerely,

/s/ Daniel S. Glaser

Daniel S. Glaser

President and Chief Executive Officer

Marsh & McLennan Companies, Inc.

Accepted and Agreed:

/s/ Alexander Moczarski        

(Signature)        

June 11, 2014                

(Date)

June 6, 2014

Alexander Moczarski

Page 2

Exhibit A

Board or Committee Memberships	•British-American Business Association (BABA) •International Insurance Society (IIS) •Bayard
Annual Base Salary	$800,000
Annual Target Bonus Opportunity	Bonus awards are discretionary. Anticipated target bonus of $1,500,000 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, Guy Carpenter’s performance 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 $1,500,000, commencing with the award made in 2015.

EX-12.1

Exhibit 12.1

Marsh & McLennan Companies, Inc. and Subsidiaries

Ratio of Earnings to Fixed Charges

(In millions, except ratios)

	Six Months Ended June 30, 2014		Years Ended December 31,
	(Unaudited)			2013		2012		2011		2010		2009
Earnings
Income before income taxes	$	1,257		$	1,973	$	1,696	$	1,404	$	769	$	552
Interest expense	84			167		181		199		233		241
Portion of rents representative of the interest factor	73			134		139		143		140		132
	$	1,414		$	2,274	$	2,016	$	1,746	$	1,142	$	925
Fixed Charges
Interest expense	$	84		$	167	$	181	$	199	$	233	$	241
Portion of rents representative of the interest factor	73			134		139		143		140		132
	$	157		$	301	$	320	$	342	$	373	$	373
Ratio of Earnings to Fixed Charges	9.0			7.6		6.3		5.1		3.1		2.5

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:	August 4, 2014	/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:	August 4, 2014	/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 June 30, 2014 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:	August 4, 2014	/s/ Daniel S. Glaser
		Daniel S. Glaser
		President and Chief Executive Officer

Date:	August 4, 2014	/s/ J. Michael Bischoff
		J. Michael Bischoff
		Chief Financial Officer

XML

Principles Of Consolidation And Other Matters (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Operating funds related to regulatory requirements or as collateral under captive insurance arrangements	$ 200,000,000		$ 200,000,000
Effective tax rate	27.60%	28.90%	28.60%	29.50%
Unrecognized tax benefits	105,000,000		105,000,000		128,000,000
Reasonably possible decrease in unrecognized tax benefits, lower bound	0		0
Reasonably possible decrease in unrecognized tax benefits, upper bound	$ 7,000,000		$ 7,000,000

XML

Goodwill And Other Intangibles (Estimated Future Aggregate Amortization Expense) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
2014 (excludes amortization through June 30, 2014)	$ 45
2015	86
2016	76
2017	67
2018	63
Subsequent years	304
Net Carrying Amount	$ 641	$ 472

XML

Acquisitions (Allocation Of Acquisition Costs) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Cash	$ 394	$ 95
Estimated fair value of deferred/contingent consideration	140	14
Total Consideration	534	109
Allocation of purchase price:
Goodwill	7,230	6,804	6,893	6,792
Current Fiscal Period Acquisitions [Member]
Business Acquisition [Line Items]
Cash	394
Estimated fair value of deferred/contingent consideration	140
Total Consideration	534
Allocation of purchase price:
Cash and cash equivalents	20
Accounts receivable, net	5
Other current assets	0
Property, plant, and equipment	3
Intangible assets	210
Goodwill	334
Other assets	2
Total assets acquired	574
Current liabilities	35
Other liabilities	5
Total liabilities assumed	40
Net assets acquired	$ 534

XML

Fair Value Measurements (Narrative) (Details) (USD $)	6 Months Ended			6 Months Ended				6 Months Ended
	Jun. 30, 2014	Mar. 31, 2011 interest_rate_swap	Feb. 28, 2011 interest_rate_swap	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2014 [Member]	Feb. 28, 2011 Senior Debt Obligations Due 2014 [Member]	Jun. 30, 2014 Interest Rate Swap [Member]	Jun. 30, 2014 Private Equity Funds [Member]	Dec. 31, 2013 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	9,000,000
Increase in fair value of contingent consideration due to 5% increase in projections	20,000,000
Decrease in fair value of contingent consideration due to 5% decrease in projections	24,000,000
Long-term investments, cost basis									$ 14,000,000	$ 14,000,000

XML

Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Equity [Abstract]
Foreign currency translation adjustments, Pre-Tax	$ 136		$ (85)		$ 207		$ (345)
Foreign currency translation adjustments, Tax	(1)		(1)		(8)		(5)
Foreign currency translation adjustments, Net of Tax	137		(84)		215		(340)
Unrealized investment gains (losses), Pre-Tax	0		(1)		0		(1)
Unrealized investment gains (losses), Tax	0		0		0		0
Unrealized investment gains (losses), Net of Tax	0		(1)		0		(1)
Pension/post-retirement plans:
Prior Service gains, Pre-Tax	(2)		(5)		(5)	[1]	(11)	[1]
Prior Service gains, Tax	(1)	[1]	(2)	[1]	(2)	[1]	(4)	[1]
Prior Service gains, Net of Tax	(1)	[1]	(3)	[1]	(3)	[1]	(7)	[1]
Net actuarial loss, Pre-Tax	49		78		100	[1]	156	[1]
Net actuarial loss, Tax	15	[1]	28	[1]	30	[1]	57	[1]
Net actuarial loss, Net of Tax	34	[1]	50	[1]	70	[1]	99	[1]
Subtotal, Pre-Tax	47		73		95		145
Subtotal, Tax	14		26		28		53
Subtotal, Net of Tax	33		47		67		92
Effect of remeasurement, Pre-tax					(166)		0
Effect of remeasurement, Tax					(33)		0
Effect of remeasurement, Net of Tax					(133)		0
Effect of curtailment, Pre-tax					(65)		0
Effect of curtailment, Tax					(13)		0
Effect of curtailment, Net of Tax					(52)		0
Foreign currency translation adjustment, Pre-Tax	(91)		(23)		(108)		157
Foreign currency translation adjustment, Tax	(20)		(5)		(22)		36
Foreign currency translation adjustment, Net of Tax	(71)		(18)		(86)		121
Other, Pre-Tax	2		0		3		0
Other, Tax	0		0		0		0
Other, Net of Tax	2		0		3		0
Pension/post-retirement plans losses (gains), Pre-Tax	(42)		50		(241)		302
Pension/post-retirement plans losses (gains), Tax	(6)		21		(40)		89
Pension/post-retirement plans losses (gains), Net of Tax	(36)		29		(201)		213
Other comprehensive income (loss), before tax	94		(36)		(34)		(44)
Other comprehensive income (loss), Tax	(7)		20		(48)		84
Other comprehensive income (loss), net of tax	$ 101		$ (56)		$ 14		$ (128)

[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.

XML

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

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 June 30, 2014 and December 31, 2013.

	Identical Assets (Level 1)				Observable Inputs (Level 2)				Unobservable Inputs (Level 3)				Total
(In millions of dollars)	06/30/14		12/31/13		06/30/14		12/31/13		06/30/14		12/31/13		06/30/14		12/31/13
Assets:
Financial instruments owned:
Mutual funds(a)	$	150	$	154	$	—	$	—	$	—	$	—	$	150	$	154
Money market funds(b)	72		45		—		—		—		—		72		45
Interest rate swap derivatives(c)	—		—		2		3		—		—		2		3
Total assets measured at fair value	$	222	$	199	$	2	$	3	$	—	$	—	$	224	$	202
Fiduciary Assets:
Money market funds	$	14	$	—	$	—	$	—	$	—	$	—	$	14	$	—
Total fiduciary assets measured at fair value	$	14	$	—	$	—	$	—	$	—	$	—	$	14	$	—
Liabilities:
Contingent purchase consideration liability(d)	$	—	$	—	$	—	$	—	$	144	$	104	$	144	$	104
Senior Notes due 2014(e)	—		—		252		253		—		—		252		253
Total liabilities measured at fair value	$	—	$	—	$	252	$	253	$	144	$	104	$	396	$	357

^(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 June 30, 2014 and 2013 that represent contingent consideration related to acquisitions:

(In millions of dollars)	2014			2013
Balance at January 1,	$	104		$	63
Additions	67			13
Payments	(36		)	(5		)
Revaluation Impact	9			10
Balance at June 30,	$	144		$	81

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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	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Contingent Consideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at January 1,	$ 104	$ 63
Additions	67	13
Payments	(36)	(5)
Revaluation Impact	9	10
Balance at June 30,	$ 144	$ 81

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New Accounting Guidance

6 Months Ended

Jun. 30, 2014

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Accounting Guidance

New Accounting Guidance

In June 2014, the FASB issued new accounting guidance to clarify the treatment of share-based payment awards that require a specific performance target to be achieved in order for employees to be eligible to vest in the awards which include terms that may provide that the performance conditions could be achieved after an employee completes the requisite service period. The guidance requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. As such, a reporting entity should apply the existing guidance as it relates to awards with performance conditions that affect vesting. The guidance is effective for annual periods beginning after December 15, 2015. Earlier adoption is permitted. Adoption of the guidance is not expected to materially affect the Company's financial condition, results of operations or cash flows.

In May 2014, the FASB issued new accounting guidance to clarify the principles for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that principle, the entity should apply the following steps: identify the contract(s) with the customer, identify the performance obligations in the contract(s), determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when (or as) the entity satisfies a performance obligation. The guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. Entities are permitted to adopt the guidance under one of the following methods: retrospectively to each prior reporting period presented (with certain practical expedients allowed) or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application. If an entity elects this transition method, it must provide disclosures in reporting periods that include the date of initial application of the amount by which each financial statement line item is affected in the current reporting period by application of the guidance as compared to guidance that was in effect before the change, and an explanation for the reasons for significant changes. The Company is currently evaluating the impact of the adoption of the guidance on its financial condition and results of operations.

In April 2014, the FASB issued new accounting guidance which changes the criteria for reporting discontinued operations and enhances disclosures in this area. Under the new guidance, only disposals representing a strategic shift in operations, such as disposal of a major geographic area or a major line of business, should be presented as discontinued operations. Those strategic shifts should have a major impact on the organization's operations and financial results. In addition, the new guidance requires expanded disclosures about discontinued operations. The guidance is effective for fiscal years beginning on or after December 15, 2014. Adoption of the guidance is not expected to materially affect the Company's financial condition, results of operations or cash flows.

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 did not have a material impact on the Company's financial statements.

In July 2013, the FASB issued new accounting guidance which amends the criteria for an entity to qualify as an investment company. The guidance clarifies the characteristics of an investment company, provides comprehensive guidance to determine whether an entity is an investment company and sets measurement and disclosure requirements for investment companies. The guidance is effective for interim and annual reporting periods beginning after December 13, 2013. The adoption of this new guidance did not have a material impact on the Company's financial statements.

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Dispositions (Income Statement Data) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]
Disposals of discontinued operations	$ 0	$ (6)	$ 0	$ (5)
Income tax expense (credit)	2	(1)	3	(12)
Disposals of discontinued operations, net of tax	(2)	(5)	(3)	7
Discontinued operations, net of tax	$ (2)	$ (5)	$ (3)	$ 7
Discontinued operations, net of tax per share
- Basic (in dollars per share)	$ (0.01)	$ 0.00	$ (0.01)	$ 0.01
- Diluted (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.01)	$ 0.02

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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		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Net income from continuing operations	$ 440	$ 400	$ 897	$ 812
Less: Net income attributable to non-controlling interests	7	7	20	18
Net income attributable to the Company	$ 433	$ 393	$ 877	$ 794
Basic weighted average common shares outstanding (in shares)	549	551	548	549
Dilutive effect of potentially issuable common shares (in shares)	7	8	8	9
Diluted weighted average common shares outstanding (in shares)	556	559	556	558
Average stock price used to calculate common stock equivalents (in dollars per share)	$ 49.67	$ 39.15	$ 48.75	$ 37.68
Stock options outstanding (in shares)	20.6	26.5	20.6	26.5

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Segment Information (Tables)

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Selected Information And Details For MMC's Operating Segments

Selected information about the Company’s operating segments for the three and six-month periods ended June 30, 2014 and 2013 are as follows:

	Three Months Ended June 30,							Six Months Ended June 30,
(In millions of dollars)	Revenue				Operating Income (Loss)			Revenue				Operating Income (Loss)
2014 –
Risk and Insurance Services	$	1,791		(a)	$	448		$	3,630		(c)	$	941
Consulting	1,520			(b)	247			2,952			(d)	472
Total Operating Segments	3,311				695			6,582				1,413
Corporate / Eliminations	(11		)		(48		)	(18		)		(93		)
Total Consolidated	$	3,300			$	647		$	6,564			$	1,320
2013–
Risk and Insurance Services	$	1,688		(a)	$	421		$	3,459		(c)	$	889
Consulting	1,410			(b)	205			2,772			(d)	392
Total Operating Segments	3,098				626			6,231				1,281
Corporate / Eliminations	(10		)		(49		)	(17		)		(97		)
Total Consolidated	$	3,088			$	577		$	6,214			$	1,184

^(a)  Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $6 million in both 2014 and 2013, and equity method income of $6 million and $7 million in 2014 and 2013, respectively.

^(b)  Includes inter-segment revenue of $8 million and $7 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $2 million in 2014 and $1 million in 2013.

^(c)  Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $12 million and $14 million in 2014 and 2013, respectively, and equity method income of $6 million and $8 million in 2014 and 2013, respectively.

^(d)  Includes inter-segment revenue of $15 million and $14 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2014 and 2013, respectively.

Details of Operating Segment Revenue

Details of operating segment revenue for the three- and six-month periods ended June 30, 2014 and 2013 are as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions of dollars)	2014			2013			2014			2013
Risk and Insurance Services
Marsh	$	1,495		$	1,402		$	2,952		$	2,797
Guy Carpenter	296			286			678			662
Total Risk and Insurance Services	1,791			1,688			3,630			3,459
Consulting
Mercer	1,071			1,044			2,132			2,085
Oliver Wyman Group	449			366			820			687
Total Consulting	1,520			1,410			2,952			2,772
Total Operating Segments	3,311			3,098			6,582			6,231
Corporate/ Eliminations	(11		)	(10		)	(18		)	(17		)
Total	$	3,300		$	3,088		$	6,564		$	6,214

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Goodwill and Other Intangibles (Changes in the Carrying Amount of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Goodwill [Roll Forward]
Balance as of January 1, as reported	$ 6,893		$ 6,792
Goodwill acquired	334		62
Other adjustments	3	[1]	(50)	[1]
Balance at June 30,	$ 7,230		$ 6,804

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

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Claims, Lawsuits And Other Contingencies (Details) (Other Contingencies-Guarantees [Member], GBP £) In Millions, unless otherwise specified	Jun. 30, 2014
Other Contingencies-Guarantees [Member]
Loss Contingencies [Line Items]
Amount reinsured by third party	£ 40

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Debt (Narrative) (Details) (USD $)	1 Months Ended	6 Months Ended			1 Months Ended				3 Months Ended		3 Months Ended		0 Months Ended		0 Months Ended			1 Months Ended		1 Months Ended		1 Months Ended		6 Months Ended
	Feb. 28, 2011 interest_rate_swap	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2011 interest_rate_swap	May 31, 2014 Senior Debt Obligations Due 2024 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2024 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2014 [Member]	Feb. 28, 2011 Senior Debt Obligations Due 2014 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2018 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2018 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2023 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2023 [Member]	Mar. 28, 2014 Revolving Credit Facility [Member]	Mar. 28, 2014 Revolving Credit Facility [Member]	Mar. 28, 2014 Amended Revolving Credit Facility March 28, 2014 [Member]	Jun. 30, 2014 Amended Revolving Credit Facility March 28, 2014 [Member]	Mar. 28, 2014 Amended Revolving Credit Facility March 28, 2014 [Member]	Dec. 31, 2012 Three-Year Delayed Draw Term Loan Facility [Member]	Jun. 30, 2014 Three-Year Delayed Draw Term Loan Facility [Member]	Oct. 31, 2013 Senior Debt Obligations Due 2015 [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]	Jun. 30, 2014 Interest Rate Swap [Member]	Jun. 30, 2013 Interest Rate Swap [Member]
Debt Instrument [Line Items]
Proceeds from issuance of debt					$ 600,000,000				$ 250,000,000		$ 250,000,000
Interest rate					3.50%	3.50%	5.375%		2.55%	2.55%	4.05%	4.05%									5.75%	4.85%
Term of debt					10 years				5 years		10 years		5 years		5 years			3 years
Debt partial redemption amount																					250,000,000
Cash outflow on redemption of debt		5,000,000	255,000,000																	275,000,000
Cost for early redemption																				24,000,000
Repaid senior notes that matured																						250,000,000
Line of credit facility, current borrowing capacity														1,000,000,000
Revolving credit facility, amount outstanding																0			50,000,000
Debt facilities, maximum borrowing capacity																	1,200,000,000	50,000,000
Interest rate on three-year draw term loan facility																			1.28%
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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Acquisitions (Narrative) (Details) In Millions, except Per Share data, unless otherwise specified	6 Months Ended				3 Months Ended	6 Months Ended							12 Months Ended		0 Months Ended
	Jun. 30, 2014 USD ($) acquisition	Jun. 30, 2013 USD ($)	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Current Fiscal Period Acquisitions [Member] USD ($)	Jun. 30, 2014 Current Fiscal Period Acquisitions [Member] USD ($)	Jun. 30, 2013 Current Fiscal Period Acquisitions [Member] Minimum [Member]	Jun. 30, 2013 Current Fiscal Period Acquisitions [Member] Maximum [Member]	Jun. 30, 2014 Prior Fiscal Periods Acquisitions [Member] USD ($)	Jun. 30, 2013 Prior Fiscal Periods Acquisitions [Member] USD ($)	Jun. 23, 2014 Alexander Forbes Group Holdings Limited [Member] USD ($)	Jun. 23, 2014 Alexander Forbes Group Holdings Limited [Member] ZAR	Dec. 31, 2013 Risk and Insurance Services Segment [Member] acquisition	Dec. 31, 2013 Consulting Segment [Member] acquisition	Jul. 24, 2014 Subsequent Event [Member] Alexander Forbes Group Holdings Limited [Member] USD ($)	Jul. 24, 2014 Subsequent Event [Member] Alexander Forbes Group Holdings Limited [Member]	Oct. 01, 2014 Scenario, Forecast [Member] Alexander Forbes Group Holdings Limited [Member]
Business Acquisition [Line Items]
Number of acquisitions made (in acquisitions)	9												6	2
Total Consideration	$ 534	$ 109				$ 534									$ 140
Cash	394	95				394
Estimated fair value of deferred/contingent consideration	140	14				140
Revenue target period (in years)			2 years	4 years			2 years	4 years
Deferred purchase consideration from prior years' acquisitions	9	3							9	3
Contingent consideration from prior year's acquisitions									36	5
Revenue related to acquisitions					38	59
Operating income related to acquisitions					5	6
Business Acquisition, Percentage of Interests Acquired, Planned Acquisition											34.00%	34.00%
Business Acquisition, Consideration to be Transferred, Planned Acquisition											$ 312
Business Acquisition, Share Price, Planned Acquisition												7.50
Business Acquisition, Percentage of Voting Interests Acquired																14.90%	19.10%

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Nature of Operations

6 Months Ended

Jun. 30, 2014

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 activities 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 health, retirement, talent and investments. Within the investments business, Mercer provides delegated investment (fiduciary management) solutions to institutional investors (such as retirement plan sponsors and trustees) and to individual investors (primarily through the inclusion of funds managed by Mercer on defined contribution and wealth management platforms). As of December 31, 2013, Mercer had assets under management of $103 billion worldwide. Oliver Wyman Group provides specialized management and 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.

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Debt (Schedule Of Outstanding Debt) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Senior Debt Obligations Due 2033 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2033 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2014 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2014 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2015 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2015 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2017 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2017 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2019 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2019 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2021 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2021 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2018 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2018 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2018 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2023 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2023 [Member]	Sep. 30, 2013 Senior Debt Obligations Due 2023 [Member]	Jun. 30, 2014 Senior Debt Obligations Due 2024 [Member]	May 31, 2014 Senior Debt Obligations Due 2024 [Member]	Dec. 31, 2013 Senior Debt Obligations Due 2024 [Member]	Jun. 30, 2014 Mortgage Due 2035 [Member]	Dec. 31, 2013 Mortgage Due 2035 [Member]	Jun. 30, 2014 Three-Year Delayed Draw Term Loan Facility [Member]	Dec. 31, 2013 Three-Year Delayed Draw Term Loan Facility [Member]	Jun. 30, 2014 Other [Member]	Dec. 31, 2013 Other [Member]
Debt Instrument [Line Items]
Current portion of long-term debt	$ 333	$ 334
Long-term debt, current and noncurrent	3,545	2,955	297	297	322	323	230	230	249	249	399	399	497	497	248	248		248	247		595		0	408	413	50	50	2	2
Long-term debt and capital lease obligations	$ 3,212	$ 2,621
Interest rate			5.875%		5.375%		5.75%		2.30%		9.25%		4.80%		2.55%		2.55%	4.05%		4.05%	3.50%	3.50%		5.70%

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Supplemental Disclosures to the Consolidated Statements of Cash Flows (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Supplemental Cash Flow Information [Abstract]
Non-cash issuance of common stock	$ 102	$ 138
Stock-based compensation expense, equity awards	$ 41	$ 54

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Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2014

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 three- and six-month periods ended June 30, 2014 and 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 April 1, 2014	$	5	$	(2,847	)	$	134	$	(2,708	)
Other comprehensive income (loss) before reclassifications	—		(69		)	137		68
Amounts reclassified from accumulated other comprehensive income	—		33			—		33
Net current period other comprehensive income (loss)	—		(36		)	137		101
Balance as of June 30, 2014	$	5	$	(2,883	)	$	271	$	(2,607	)

(In millions of dollars)	Unrealized Investment Gains			Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments			Total
Balance as of April 1, 2013	4			(3,267		)	(116		)	$	(3,379	)
Other comprehensive income (loss) before reclassifications	(1		)	(18		)	(84		)	(103		)
Amounts reclassified from accumulated other comprehensive income	—			47			—			47
Net current period other comprehensive income (loss)	(1		)	29			(84		)	(56		)
Balance as of June 30, 2013	$	3		$	(3,238	)	$	(200	)	$	(3,435	)

(In millions of dollars)	Unrealized Investment Gains		Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments		Total
Balance as of January 1, 2014	$	5	$	(2,682	)	$	56	$	(2,621	)
Other comprehensive income (loss) before reclassifications	—		(268		)	215		(53		)
Amounts reclassified from accumulated other comprehensive income	—		67			—		67
Net current period other comprehensive income (loss)	—		(201		)	215		14
Balance as of June 30, 2014	$	5	$	(2,883	)	$	271	$	(2,607	)

(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		)	121			(340		)	(220		)
Amounts reclassified from accumulated other comprehensive income	—			92			—			92
Net current period other comprehensive income (loss)	(1		)	213			(340		)	(128		)
Balance as of June 30, 2013	$	3		$	(3,238	)	$	(200	)	$	(3,435	)

Schedule of Components of Comprehensive Income (Loss)

The components of other comprehensive income (loss) for the three- and six-month periods ended June 30, 2014 and 2013 are as follows:

Three Months Ended June 30,	2014									2013
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	136		$	(1	)	$	137		$	(85	)	$	(1	)	$	(84	)
Unrealized investment gains (losses)	—			—			—			(1		)	—			(1		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(2		)	(1		)	(1		)	(5		)	(2		)	(3		)
Net actuarial losses (a)	49			15			34			78			28			50
Subtotal	47			14			33			73			26			47
Foreign currency translation adjustments	(91		)	(20		)	(71		)	(23		)	(5		)	(18		)
Other	2			—			2			—			—			—
Pension/post-retirement plans (losses) gains	(42		)	(6		)	(36		)	50			21			29
Other comprehensive income (loss)	$	94		$	(7	)	$	101		$	(36	)	$	20		$	(56	)
(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.

Six Months Ended June 30,	2014									2013
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	207		$	(8	)	$	215		$	(345	)	$	(5	)	$	(340	)
Unrealized investment gains (losses)	—			—			—			(1		)	—			(1		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(5		)	(2		)	(3		)	(11		)	(4		)	(7		)
Net actuarial losses (a)	100			30			70			156			57			99
Subtotal	95			28			67			145			53			92
Effect of remeasurement	(166		)	(33		)	(133		)	—			—			—
Effect of curtailment	(65		)	(13		)	(52		)	—			—			—
Foreign currency translation adjustments	(108		)	(22		)	(86		)	157			36			121
Other	3			—			3			—			—			—
Pension/post-retirement plans (losses) gains	(241		)	(40		)	(201		)	302			89			213
Other comprehensive (loss) income	$	(34	)	$	(48	)	$	14		$	(44	)	$	84		$	(128	)

(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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Supplemental Disclosures to the Consolidated Statements of Cash Flows (Tables)

6 Months Ended

Jun. 30, 2014

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 six-month periods ended June 30, 2014 and 2013.

(In millions of dollars)	2014			2013
Assets acquired, excluding cash	$	554		$	126
Liabilities assumed	(40		)	(24		)
Contingent/deferred purchase consideration	(140		)	(14		)
Net cash outflow for current year acquisitions	374			88
Deferred purchase consideration from prior years' acquisitions	9			3
Net cash outflow for acquisitions	$	383		$	91

(In millions of dollars)	2014		2013
Interest paid	$	82	$	89
Income taxes paid	$	218	$	185

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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	Jun. 30, 2014		Dec. 31, 2013
Financial instruments owned:
Total assets measured at fair value	$ 224		$ 202
Fiduciary Assets:
Fiduciary assets	14		0
Liabilities:
Total liabilities measured at fair value	396		357
Identical Assets (Level 1) [Member]
Financial instruments owned:
Total assets measured at fair value	222		199
Fiduciary Assets:
Fiduciary assets	14		0
Liabilities:
Total liabilities measured at fair value	0		0
Observable Inputs (Level 2) [Member]
Financial instruments owned:
Total assets measured at fair value	2		3
Fiduciary Assets:
Fiduciary assets	0		0
Liabilities:
Total liabilities measured at fair value	252		253
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	144		104
Other Assets [Member]
Financial instruments owned:
Mutual funds	150	[1]	154	[1]
Other Assets [Member] | Identical Assets (Level 1) [Member]
Financial instruments owned:
Mutual funds	150	[1]	154	[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	72	[2]	45	[2]
Cash and Cash Equivalents [Member] | Identical Assets (Level 1) [Member]
Financial instruments owned:
Money market funds	72	[2]	45	[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	2	[3]	3	[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	2	[3]	3	[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 purchase consideration liability	144	[4]	104	[4]
Accounts Payable and Accrued Liabilities and Other Liabilities [Member] | Identical Assets (Level 1) [Member]
Liabilities:
Contingent purchase consideration liability	0	[4]	0	[4]
Accounts Payable and Accrued Liabilities and Other Liabilities [Member] | Observable Inputs (Level 2) [Member]
Liabilities:
Contingent purchase consideration liability	0	[4]	0	[4]
Accounts Payable and Accrued Liabilities and Other Liabilities [Member] | Unobservable Inputs (Level 3) [Member]
Liabilities:
Contingent purchase consideration liability	144	[4]	104	[4]
Long-term Debt [Member] | Senior Debt Obligations Due 2014 [Member]
Liabilities:
Senior Notes due 2014	252	[5]	253	[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	252	[5]	253	[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]
Money Market Funds [Member]
Fiduciary Assets:
Fiduciary assets	14		0
Money Market Funds [Member] | Identical Assets (Level 1) [Member]
Fiduciary Assets:
Fiduciary assets	14		0
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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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	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Supplemental Cash Flow Information [Abstract]
Assets acquired, excluding cash	$ 554	$ 126
Liabilities assumed	(40)	(24)
Contingent/deferred purchase consideration	(140)	(14)
Net cash outflow for current year acquisitions	374	88
Deferred purchase consideration from prior years' acquisitions	9	3
Net cash outflow for acquisitions	383	91
Interest paid	82	89
Income taxes paid	$ 218	$ 185

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Acquisitions (Tables)

6 Months Ended

Jun. 30, 2014

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 2014 based on their fair values:

For the Six Months Ended June 30, 2014
(Amounts in millions)
Cash	$	394
Estimated fair value of deferred/contingent consideration	140
Total Consideration	$	534
Allocation of purchase price:
Cash and cash equivalents	$	20
Accounts receivable, net	5
Other current assets	—
Property, plant, and equipment	3
Intangible assets	210
Goodwill	334
Other assets	2
Total assets acquired	574
Current liabilities	35
Other liabilities	5
Total liabilities assumed	40
Net assets acquired	$	534

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 June 30,				Six Months Ended June 30,
(In millions, except per share figures)	2014		2013		2014		2013
Revenue	$	3,306	$	3,152	$	6,591	$	6,348
Income from continuing operations	$	440	$	406	$	900	$	823
Net income attributable to the Company	$	431	$	393	$	877	$	812
Basic net income per share:
– Continuing operations	$	0.79	$	0.72	$	1.60	$	1.46
– Net income attributable to the Company	$	0.79	$	0.71	$	1.60	$	1.48
Diluted net income per share:
– Continuing operations	$	0.78	$	0.71	$	1.58	$	1.44
– Net income attributable to the Company	$	0.78	$	0.70	$	1.58	$	1.45

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Dispositions (Tables)

6 Months Ended

Jun. 30, 2014

Discontinued Operations and Disposal Groups [Abstract]

Income Statement Data

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

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions of dollars, except per share figures)	2014			2013			2014			2013
Disposals of discontinued operations	$	—		$	(6	)	$	—		$	(5	)
Income tax expense (credit)	2			(1		)	3			(12		)
Disposals of discontinued operations, net of tax	(2		)	(5		)	(3		)	7
Discontinued operations, net of tax	$	(2	)	$	(5	)	$	(3	)	$	7
Discontinued operations, net of tax per share
– Basic	$	(0.01	)	$	—		$	(0.01	)	$	0.01
– Diluted	$	(0.01	)	$	(0.01	)	$	(0.01	)	$	0.02

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Consolidated Statements of Equity (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 0.78	$ 0.71
Dividend equivalents declared per share (in dollars per share)	$ 0.78	$ 0.71

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Goodwill and Other Intangibles (Tables)

6 Months Ended

Jun. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

Changes in the carrying amount of goodwill are as follows:

June 30,
(In millions of dollars)	2014		2013
Balance as of January 1, as reported	$	6,893	$	6,792
Goodwill acquired	334		62
Other adjustments(a)	3		(50		)
Balance at June 30,	$	7,230	$	6,804

^(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:

	June 30, 2014						December 31, 2013
(In millions of dollars)	Gross Cost		Accumulated Amortization		Net Carrying Amount		Gross Cost		Accumulated Amortization		Net Carrying Amount
Amortized intangibles	$	1,101	$	460	$	641	$	888	$	416	$	472

Estimated Future Aggregate Amortization Expense

Aggregate amortization expense for the six months ended June 30, 2014 and2013 was $42 million and $35 million, respectively. The estimated future aggregate amortization expense is as follows:

For the Years Ending December 31,
(In millions of dollars)	Estimated Expense
2014 (excludes amortization through June 30, 2014)	$	45
2015	86
2016	76
2017	67
2018	63
Subsequent years	304
	$	641

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Principles of Consolidation and Other Matters Investment Income (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2013 Trident II [Member]	Mar. 31, 2013 Trident II [Member] Performance Fees [Member]	Jun. 30, 2014 Trident III [Member] Performance Fees [Member]	Jun. 30, 2014 Private Equity Funds [Member] Trident III [Member]	Jun. 30, 2014 Private Equity Funds [Member] Trident III [Member]
Deferred Revenue Arrangement [Line Items]
Equity method income	$ 20
Recognized deferred performance fees		15	7
Unrealized Gain (Loss) on Investments				2	3
Deferred performance fees			$ 37

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Goodwill and Other Intangibles (Amortized Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Cost	$ 1,101	$ 888
Accumulated Amortization	460	416
Net Carrying Amount	$ 641	$ 472

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Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Revenue	$ 3,300	$ 3,088	$ 6,564	$ 6,214
Expense:
Compensation and benefits	1,876	1,766	3,715	3,569
Other operating expenses	777	745	1,529	1,461
Operating expenses	2,653	2,511	5,244	5,030
Operating income	647	577	1,320	1,184
Interest income	5	4	10	8
Interest expense	(42)	(40)	(84)	(84)
Investment income	(2)	23	11	44
Income before income taxes	608	564	1,257	1,152
Income tax expense	168	164	360	340
Income from continuing operations	440	400	897	812
Discontinued operations, net of tax	(2)	(5)	(3)	7
Net income before non-controlling interests	438	395	894	819
Less: Net income attributable to non-controlling interests	7	7	20	18
Net income attributable to the Company	$ 431	$ 388	$ 874	$ 801
Basic net income per share
Basic net income per share - Continuing operations	$ 0.79	$ 0.71	$ 1.60	$ 1.45
Basic net income per share - Net income attributable to the Company	$ 0.78	$ 0.71	$ 1.59	$ 1.46
Diluted net income per share
Diluted net income per share - Continuing operations	$ 0.78	$ 0.70	$ 1.58	$ 1.42
Diluted net income per share - Net income attributable to the Company	$ 0.77	$ 0.69	$ 1.57	$ 1.44
Average number of shares outstanding
Average number of shares outstanding - Basic	549	551	548	549
Average number of shares outstanding - Diluted	556	559	556	558
Shares outstanding at June 30	546	549	546	549

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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		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ (2,708)	$ (3,379)	$ (2,621)	$ (3,307)
Other comprehensive income (loss) before reclassifications	68	(103)	(53)	(220)
Amounts reclassified from accumulated other comprehensive income	33	47	67	92
Other comprehensive income (loss), net of tax	101	(56)	14	(128)
Balance, end of period	(2,607)	(3,435)	(2,607)	(3,435)
Unrealized Investment Gains [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	5	4	5	4
Other comprehensive income (loss) before reclassifications	0	(1)	0	(1)
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive income (loss), net of tax	0	(1)	0	(1)
Balance, end of period	5	3	5	3
Pension/Postretirement Plans Gains (Losses) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	(2,847)	(3,267)	(2,682)	(3,451)
Other comprehensive income (loss) before reclassifications	(69)	(18)	(268)	121
Amounts reclassified from accumulated other comprehensive income	33	47	67	92
Other comprehensive income (loss), net of tax	(36)	29	(201)	213
Balance, end of period	(2,883)	(3,238)	(2,883)	(3,238)
Foreign Currency Translation Adjustments [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	134	(116)	56	140
Other comprehensive income (loss) before reclassifications	137	(84)	215	(340)
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive income (loss), net of tax	137	(84)	215	(340)
Balance, end of period	$ 271	$ (200)	$ 271	$ (200)

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Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating cash flows:
Net income before non-controlling interests	$ 894	$ 819
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization of fixed assets and capitalized software	149	142
Amortization of intangible assets	42	35
Adjustments to acquisition related contingent consideration liability	(3)	10
Provision for deferred income taxes	83	71
Gain on investments	(10)	(44)
Loss on disposition of assets	2	5
Share based compensation expense	51	66
Changes in assets and liabilities:
Net receivables	(392)	(283)
Other current assets	(16)	(34)
Other assets	15	(75)
Accounts payable and accrued liabilities	(7)	27
Accrued compensation and employee benefits	(480)	(615)
Accrued income taxes	61	53
Contributions to pension and other benefit plans in excess of current year expense/credit	(118)	(370)
Other liabilities	(39)	17
Effect of exchange rate changes	26	13
Net cash provided by (used for) operations	258	(163)
Financing cash flows:
Purchase of treasury shares	(350)	(250)
Proceeds from debt	595	50
Repayments of debt	(5)	(255)
Shares withheld for taxes on vested units – treasury shares	(55)	(68)
Issuance of common stock from treasury shares	136	206
Payments of contingent consideration for acquisitions	(24)	(5)
Distributions of non-controlling interests	(13)	(15)
Dividends paid	(275)	(255)
Net cash provided by (used for) financing activities	9	(592)
Investing cash flows:
Capital expenditures	(202)	(192)
Net sales of long-term investments	2	82
Proceeds from sales of fixed assets	1	2
Dispositions	0	3
Acquisitions	(383)	(91)
Other, net	1	2
Net cash used for investing activities	(581)	(194)
Effect of exchange rate changes on cash and cash equivalents	16	(122)
Decrease in cash and cash equivalents	(298)	(1,071)
Cash and cash equivalents at beginning of period	2,303	2,301
Cash and cash equivalents at end of period	$ 2,005	$ 1,230

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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			6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 62		$ 61	$ 123	$ 125
Interest cost	161		144	322	289
Expected return on plan assets	(250)		(225)	(498)	(453)
Amortization of prior service credit	(3)		(6)	(6)	(11)
Recognized actuarial loss	53		80	104	158
Net periodic benefit cost				45	108
Curtailment (credit)				(65)	0
Total cost (credit)	23		54	(20)	108
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	23		25	45	52
Interest cost	62		57	125	114
Expected return on plan assets	(87)		(81)	(173)	(162)
Amortization of prior service credit	(2)		(4)	(4)	(8)
Recognized actuarial loss	27		53	53	104
Total cost (credit)	23		50	46	100
Non-U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	39		36	78	73
Interest cost	99		87	197	175
Expected return on plan assets	(163)		(144)	(325)	(291)
Amortization of prior service credit	(1)		(2)	(2)	(3)
Recognized actuarial loss	26		27	51	54
Net periodic benefit cost				(1)	8
Curtailment (credit)		(65)		(65)	0
Total cost (credit)	0		4	(66)	8
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1			2	2
Interest cost	3		3	6	6
Expected return on plan assets
Amortization of prior service credit
Recognized actuarial loss			1		1
Net periodic benefit cost				8	9
Curtailment (credit)				0	0
Total cost (credit)	4		4	8	9
U.S. Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1			1	1
Interest cost	2		2	4	4
Expected return on plan assets
Amortization of prior service credit
Recognized actuarial loss	(1)			(1)
Total cost (credit)	2		2	4	5
Foreign Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost				1	1
Interest cost	1		1	2	2
Expected return on plan assets
Amortization of prior service credit
Recognized actuarial loss	1		1	1	1
Net periodic benefit cost				4	4
Curtailment (credit)				0	0
Total cost (credit)	$ 2		$ 2	$ 4	$ 4

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Debt (Tables)

6 Months Ended

Jun. 30, 2014

Debt Disclosure [Abstract]

Schedule of Outstanding Debt

The Company’s outstanding debt is as follows:

(In millions of dollars)	June 30, 2014		December 31, 2013
Short-term:
Current portion of long-term debt	$	333	$	334
Long-term:
Senior notes – 5.875% due 2033	297		297
Senior notes – 5.375% due 2014	322		323
Senior notes – 5.75% due 2015	230		230
Senior notes – 2.30% due 2017	249		249
Senior notes – 9.25% due 2019	399		399
Senior notes – 4.80% due 2021	497		497
Senior notes – 2.55% due 2018	248		248
Senior notes – 4.05% due 2023	248		247
Senior notes – 3.50% due 2024	595		—
Mortgage – 5.70% due 2035	408		413
Term Loan Facility - due 2016	50		50
Other	2		2
	3,545		2,955
Less current portion	333		334
	$	3,212	$	2,621

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 June 30, 2014 and 2013 are as follows:

	2014							2013
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	$	(1	)	$	1	$	—	$	(1	)	$	1	$	—

Estimated Fair Value Of Significant Financial Instruments

The estimated fair value of the Company’s short-term and long-term debt 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.

	June 30, 2014				December 31, 2013
(In millions of dollars)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Short-term debt	$	333	$	333	$	334	$	334
Long-term debt	$	3,212	$	3,480	$	2,621	$	2,819

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Restructuring Costs (Restructuring Activities) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Liability at beginning of period	$ 124	$ 170
Amounts Accrued	6	22
Cash Paid	(20)	(65)
Other	(1)	(3)
Liability at end of period	109	124
Severance [Member]
Restructuring Reserve [Roll Forward]
Liability at beginning of period	11	36
Amounts Accrued	2	9
Cash Paid	(5)	(33)
Other		(1)
Liability at end of period	8	11
Future Rent Under Non-Cancelable Leases and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Liability at beginning of period	113	134
Amounts Accrued	4	13
Cash Paid	(15)	(32)
Other	(1)	(2)
Liability at end of period	101	113
Corporate Segment [Member]
Restructuring Reserve [Roll Forward]
Amounts Accrued	$ 6

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Common Stock

6 Months Ended

Jun. 30, 2014

Equity [Abstract]

Common Stock

Common Stock

During the first six months of 2014, the Company repurchased approximately 7 million shares of its common stock for consideration of $350 million. In May 2014, the Board of Directors of the Company authorized share repurchases of up to $2 billion of the Company's common stock. The Company remains authorized to purchase additional shares of its common stock up to a value of $1.8 billion. There is no time limit on the authorization. During the first six months of 2013, the Company repurchased 6.4 million shares of its common stock for consideration of $250 million.

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Restructuring Costs (Tables)

6 Months Ended

Jun. 30, 2014

Restructuring and Related Activities [Abstract]

Restructuring Activities

Details of the restructuring activity from January 1, 2013 through June 30, 2014, which includes liabilities from actions prior to 2014, are as follows:

(In millions of dollars)	Liability at 1/1/13		Amounts Accrued		Cash Paid			Other			Liability at 12/31/13		Amounts Accrued		Cash Paid			Other			Liability at 6/30/14
Severance	$	36	$	9	$	(33	)	$	(1	)	$	11	$	2	$	(5	)	$	—		$	8
Future rent under non-cancelable leases and other costs	134		13		(32		)	(2		)	113		4		(15		)	(1		)	101
Total	$	170	$	22	$	(65	)	$	(3	)	$	124	$	6	$	(20	)	$	(1	)	$	109

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Segment Information

6 Months Ended

Jun. 30, 2014

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 2013 Form 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.

Selected information about the Company’s operating segments for the three and six-month periods ended June 30, 2014 and 2013 are as follows:

	Three Months Ended June 30,							Six Months Ended June 30,
(In millions of dollars)	Revenue				Operating Income (Loss)			Revenue				Operating Income (Loss)
2014 –
Risk and Insurance Services	$	1,791		(a)	$	448		$	3,630		(c)	$	941
Consulting	1,520			(b)	247			2,952			(d)	472
Total Operating Segments	3,311				695			6,582				1,413
Corporate / Eliminations	(11		)		(48		)	(18		)		(93		)
Total Consolidated	$	3,300			$	647		$	6,564			$	1,320
2013–
Risk and Insurance Services	$	1,688		(a)	$	421		$	3,459		(c)	$	889
Consulting	1,410			(b)	205			2,772			(d)	392
Total Operating Segments	3,098				626			6,231				1,281
Corporate / Eliminations	(10		)		(49		)	(17		)		(97		)
Total Consolidated	$	3,088			$	577		$	6,214			$	1,184

^(a)  Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $6 million in both 2014 and 2013, and equity method income of $6 million and $7 million in 2014 and 2013, respectively.

^(b)  Includes inter-segment revenue of $8 million and $7 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $2 million in 2014 and $1 million in 2013.

^(c)  Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $12 million and $14 million in 2014 and 2013, respectively, and equity method income of $6 million and $8 million in 2014 and 2013, respectively.

^(d)  Includes inter-segment revenue of $15 million and $14 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2014 and 2013, respectively.

Details of operating segment revenue for the three- and six-month periods ended June 30, 2014 and 2013 are as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions of dollars)	2014			2013			2014			2013
Risk and Insurance Services
Marsh	$	1,495		$	1,402		$	2,952		$	2,797
Guy Carpenter	296			286			678			662
Total Risk and Insurance Services	1,791			1,688			3,630			3,459
Consulting
Mercer	1,071			1,044			2,132			2,085
Oliver Wyman Group	449			366			820			687
Total Consulting	1,520			1,410			2,952			2,772
Total Operating Segments	3,311			3,098			6,582			6,231
Corporate/ Eliminations	(11		)	(10		)	(18		)	(17		)
Total	$	3,300		$	3,088		$	6,564		$	6,214

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Segment Information (Selected Information And Details For MMC's Operating Segments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment Reporting Information [Line Items]
Revenue	$ 3,300		$ 3,088		$ 6,564		$ 6,214
Operating Income (Loss)	647		577		1,320		1,184
Risk and Insurance Services Segment [Member]
Segment Reporting Information [Line Items]
Interest on fiduciary funds					12		14
Consulting Segment [Member]
Segment Reporting Information [Line Items]
Interest on fiduciary funds	2		1		3		2
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	3,311		3,098		6,582		6,231
Operating Income (Loss)	695		626		1,413		1,281
Operating Segments [Member] | Risk and Insurance Services Segment [Member]
Segment Reporting Information [Line Items]
Revenue	1,791	[1]	1,688	[1]	3,630	[2]	3,459	[2]
Operating Income (Loss)	448		421		941		889
Interest on fiduciary funds	6		6		12		14
Equity method income	6		7		6		8
Operating Segments [Member] | Consulting Segment [Member]
Segment Reporting Information [Line Items]
Revenue	1,520	[3]	1,410	[3]	2,952	[4]	2,772	[4]
Operating Income (Loss)	247		205		472		392
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	(11)		(10)		(18)		(17)
Intersegment Eliminations [Member] | Risk and Insurance Services Segment [Member]
Segment Reporting Information [Line Items]
Revenue	3		3		3		3
Intersegment Eliminations [Member] | Consulting Segment [Member]
Segment Reporting Information [Line Items]
Revenue	8		7		15		14
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ (48)		$ (49)		$ (93)		$ (97)

[1] Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $6 million in both 2014 and 2013, and equity method income of $6 million and $7 million in 2014 and 2013, respectively.

[2] Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $12 million and $14 million in 2014 and 2013, respectively, and equity method income of $6 million and $8 million in 2014 and 2013, respectively.

[3] Includes inter-segment revenue of $8 million and $7 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $2 million in 2014 and $1 million in 2013.

[4] Includes inter-segment revenue of $15 million and $14 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2014 and 2013, 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, 2012		$ 561	$ 1,107	$ 8,628	$ (3,307)	$ (447)	$ 64
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			(69)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact			(36)			312
Net income	819			801			18
Dividend equivalents declared - (per share amounts: $0.78 in 2014 and $0.71 in 2013)				(3)
Dividends declared – (per share amounts: $0.78 in 2014 and $0.71 in 2013)				(390)
Other comprehensive income (loss), net of tax	(128)				(128)
Purchase of treasury shares						(250)
Other changes							(15)
Balance, end of period at Jun. 30, 2013	6,846	561	1,002	9,036	(3,435)	(385)	67
Balance, beginning of year at Dec. 31, 2013	7,975	561	1,028	9,452	(2,621)	(515)	70
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			(47)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact			(67)			251
Net income	894			874			20
Dividend equivalents declared - (per share amounts: $0.78 in 2014 and $0.71 in 2013)				(2)
Dividends declared – (per share amounts: $0.78 in 2014 and $0.71 in 2013)				(427)
Other comprehensive income (loss), net of tax	14				14
Purchase of treasury shares						(350)
Other changes							(13)
Balance, end of period at Jun. 30, 2014	$ 8,228	$ 561	$ 914	$ 9,897	$ (2,607)	$ (614)	$ 77

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Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income before non-controlling interests	$ 438	$ 395	$ 894	$ 819
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	136	(85)	207	(345)
Unrealized investment loss	0	(1)	0	(1)
Gain (loss) related to pension/post-retirement plans	(42)	50	(241)	302
Other comprehensive income (loss), before tax	94	(36)	(34)	(44)
Income tax expense (credit) on other comprehensive income	(7)	20	(48)	84
Other comprehensive income (loss), net of tax	101	(56)	14	(128)
Comprehensive income	539	339	908	691
Less: comprehensive income attributable to non-controlling interest	7	7	20	18
Comprehensive income attributable to the Company	$ 532	$ 332	$ 888	$ 673

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Goodwill and Other Intangibles

6 Months Ended

Jun. 30, 2014

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 accordance with applicable accounting guidance, the Company assesses qualitative factors to determine whether it is necessary to perform the two-step goodwill 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 of 2013 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:

June 30,
(In millions of dollars)	2014		2013
Balance as of January 1, as reported	$	6,893	$	6,792
Goodwill acquired	334		62
Other adjustments(a)	3		(50		)
Balance at June 30,	$	7,230	$	6,804

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

Goodwill allocable to the Company’s reportable segments at June 30, 2014 is as follows: Risk & Insurance Services, $5 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:

	June 30, 2014						December 31, 2013
(In millions of dollars)	Gross Cost		Accumulated Amortization		Net Carrying Amount		Gross Cost		Accumulated Amortization		Net Carrying Amount
Amortized intangibles	$	1,101	$	460	$	641	$	888	$	416	$	472

Aggregate amortization expense for the six months ended June 30, 2014 and2013 was $42 million and $35 million, respectively. The estimated future aggregate amortization expense is as follows:

For the Years Ending December 31,
(In millions of dollars)	Estimated Expense
2014 (excludes amortization through June 30, 2014)	$	45
2015	86
2016	76
2017	67
2018	63
Subsequent years	304
	$	641

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Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 28, 2014
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	Jun. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		544,316,951

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Fair Value Measurements

6 Months Ended

Jun. 30, 2014

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 Financial Accounting Standards Board ("FASB") in Accounting Standards Codification ("ASC") Topic No. 820 ("Fair Value Measurements and Disclosures"). 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 and money market mutual funds).

Assets and liabilities utilizing Level 1 inputs include exchange-traded equity securities and mutual funds.

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).

Assets and liabilities utilizing Level 2 inputs include corporate and municipal bonds, senior notes and interest rate swaps.

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).

Liabilities utilizing Level 3 inputs include liabilities for contingent purchase consideration.

Valuation Techniques

Equity Securities and Mutual 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.

Interest Rate Swap Derivatives - 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

At June 30, 2014, the fair value of the first $250 million of Senior Notes maturing in July 2014 was estimated to be the carrying value of those notes based on discounted future cash flows using current interest rates available for debt with similar terms and remaining maturities, adjusted by the fair value of the interest rate swap derivatives, discussed above. In the first quarter of 2011, the Company entered into two interest rate swaps to 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 meeting EBITDA and revenue targets over periods ranging from two to four years. The fair value of contingent consideration is estimated as the present value of future cash flows resulting 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 June 30, 2014 and December 31, 2013.

	Identical Assets (Level 1)				Observable Inputs (Level 2)				Unobservable Inputs (Level 3)				Total
(In millions of dollars)	06/30/14		12/31/13		06/30/14		12/31/13		06/30/14		12/31/13		06/30/14		12/31/13
Assets:
Financial instruments owned:
Mutual funds(a)	$	150	$	154	$	—	$	—	$	—	$	—	$	150	$	154
Money market funds(b)	72		45		—		—		—		—		72		45
Interest rate swap derivatives(c)	—		—		2		3		—		—		2		3
Total assets measured at fair value	$	222	$	199	$	2	$	3	$	—	$	—	$	224	$	202
Fiduciary Assets:
Money market funds	$	14	$	—	$	—	$	—	$	—	$	—	$	14	$	—
Total fiduciary assets measured at fair value	$	14	$	—	$	—	$	—	$	—	$	—	$	14	$	—
Liabilities:
Contingent purchase consideration liability(d)	$	—	$	—	$	—	$	—	$	144	$	104	$	144	$	104
Senior Notes due 2014(e)	—		—		252		253		—		—		252		253
Total liabilities measured at fair value	$	—	$	—	$	252	$	253	$	144	$	104	$	396	$	357

^(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 six-month period ended June 30, 2014, there were no assets or liabilities that were 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 June 30, 2014 and 2013 that represent contingent consideration related to acquisitions:

(In millions of dollars)	2014			2013
Balance at January 1,	$	104		$	63
Additions	67			13
Payments	(36		)	(5		)
Revaluation Impact	9			10
Balance at June 30,	$	144		$	81

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 $9 million in the six-month period ended June 30, 2014. A 5% increase in the above mentioned projections would increase the liability by approximately $20 million. A 5% decrease in the above mentioned projections would decrease the liability by approximately $24 million.

Fair Value of Long-term Investments

The Company has certain long-term investments, primarily investments in non-publicly traded private equity funds, of $14 million at both June 30, 2014 and December 31, 2013, 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. They are included in Other assets in the consolidated balance sheets.

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Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 2,005	$ 2,303
Receivables
Commissions and fees	3,461	3,065
Advanced premiums and claims	59	61
Other	292	282
Gross receivables	3,812	3,408
Less-allowance for doubtful accounts and cancellations	(106)	(98)
Net receivables	3,706	3,310
Current deferred tax assets	480	482
Other current assets	223	205
Total current assets	6,414	6,300
Goodwill and intangible assets	7,871	7,365
Fixed assets (net of accumulated depreciation and amortization of $1,663 at June 30, 2014 and $1,597 at December 31, 2013)	843	828
Pension related assets	980	979
Deferred tax assets	546	626
Other assets	934	882
Total assets	17,588	16,980
Current liabilities:
Short-term debt	333	334
Accounts payable and accrued liabilities	1,849	1,861
Accrued compensation and employee benefits	985	1,466
Accrued income taxes	209	148
Dividends payable	154	0
Total current liabilities	3,530	3,809
Fiduciary liabilities	5,237	4,234
Less – cash and investments held in a fiduciary capacity	(5,237)	(4,234)
Net fiduciary assets	0	0
Long-term debt	3,212	2,621
Pension, post-retirement and post-employment benefits	1,123	1,150
Liabilities for errors and omissions	366	373
Other liabilities	1,129	1,052
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 June 30, 2014 and December 31, 2013	561	561
Additional paid-in capital	914	1,028
Retained earnings	9,897	9,452
Accumulated other comprehensive loss	(2,607)	(2,621)
Non-controlling interests	77	70
Stockholders' equity before treasury stock	8,842	8,490
Less – treasury shares, at cost, 14,993,131 shares at June 30, 2014 and 13,882,204 shares at December 31, 2013	(614)	(515)
Total equity	8,228	7,975
Total liabilities and stockholders' equity	$ 17,588	$ 16,980

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Per Share Data

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Per Share Data

Per Share Data

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 June 30,				Six Months Ended June 30,
(In millions, except per share figures)	2014		2013		2014		2013
Net income from continuing operations	$	440	$	400	$	897	$	812
Less: Net income attributable to non-controlling interests	7		7		20		18
	$	433	$	393	$	877	$	794
Basic weighted average common shares outstanding	549		551		548		549
Dilutive effect of potentially issuable common shares	7		8		8		9
Diluted weighted average common shares outstanding	556		559		556		558
Average stock price used to calculate common stock equivalents	$	49.67	$	39.15	$	48.75	$	37.68

There were 20.6 million and 26.5 million stock options outstanding as of June 30, 2014 and 2013, respectively.

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Fiduciary Assets and Liabilities

6 Months Ended

Jun. 30, 2014

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 $12 million and $14 million for the six-month periods ended June 30, 2014 and 2013, respectively. The Consulting segment recorded fiduciary interest income of $3 million and $2 million for the the six-month periods ended June 30, 2014 and 2013, 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 $8.7 billion at June 30, 2014 and $8.2 billion atDecember 31, 2013. 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 $19 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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Claims, Lawsuits And Other Contingencies

6 Months Ended

Jun. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Claims, Lawsuits, and Other Contingencies

Claims, Lawsuits and Other Contingencies

Errors and Omissions Claims

The Company and its subsidiaries 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, the provision of investment advice and investment management services to pension plans, and the provision of consulting services relating to the drafting and interpretation of trust deeds and other documentation governing pension plans. Errors and omissions claims may 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, an internal actuarial analysis and other 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. (the predecessor entity to Marsh LLC) 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. All but one of these matters have been resolved.

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, in November 2013, Mercer 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 June 30, 2014, 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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Retirement Benefits

6 Months Ended

Jun. 30, 2014

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 June 30, 2014, the actual allocation for the U.S. Plan was 60% equities and equity alternatives and 40% fixed income. The target asset allocation for the U.K. Plans, which comprises approximately 82% of non-U.S. Plan assets, is 50% equities and equity alternatives and 50% fixed income. As of June 30, 2014, the actual allocation for the U.K. Plans was 48% equities and equity alternatives and 52% 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 generally uses threshold-based portfolio re-balancing to ensure the actual portfolio remains consistent with target asset allocation ranges.

After completion of a consultation period with affected colleagues, in January 2014, the Company amended its U.K. defined benefit pension plans to close those plans to future benefit accruals effective August 1, 2014 and will replace those plans, along with its existing defined contribution plans, with a new, comprehensive defined contribution arrangement. This change resulted in a curtailment of the U.K. defined benefit plans, and as required under GAAP, the Company re-measured the defined benefit plans’ assets and liabilities at the amendment date, based on assumptions and market conditions at that date. As a result of the re-measurement, the projected benefit obligation ("PBO") increased by approximately $147 million and the funded status decreased by approximately $137 million. The change in the PBO and in the funded status relates primarily to a decrease in the discount rate at the re-measurement date. The net periodic benefit costs recognized in 2014 are the weighted average resulting from the December 31, 2013 measurement and the January 2014 re-measurement. The Company recognized a curtailment gain of $65 million in the first quarter of 2014, primarily resulting from the recognition of the remaining unamortized prior service credit related to a plan amendment made in December 2012. This gain was mostly offset by the cost of a transition benefit for certain employees most impacted by the amendment, which is not part of net periodic pension cost.

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 June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	62		$	61		$	1		$	—
Interest cost	161			144			3			3
Expected return on plan assets	(250		)	(225		)	—			—
Amortization of prior service credit	(3		)	(6		)	—			—
Recognized actuarial loss	53			80			—			1
Net periodic benefit cost	$	23		$	54		$	4		$	4
Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	123		$	125		$	2		$	2
Interest cost	322			289			6			6
Expected return on plan assets	(498		)	(453		)	—			—
Amortization of prior service credit	(6		)	(11		)	—			—
Recognized actuarial loss	104			158			—			1
Net periodic benefit cost	$	45		$	108		$	8		$	9
Curtailment (credit)	(65		)	—			—			—
Total cost (credit)	$	(20	)	$	108		$	8		$	9
U.S. Plans only	Pension						Postretirement
For the Three Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	23		$	25		$	1		$	—
Interest cost	62			57			2			2
Expected return on plan assets	(87		)	(81		)	—			—
Amortization of prior service credit	(2		)	(4		)	—			—
Recognized actuarial loss	27			53			(1		)	—
Net periodic benefit cost	$	23		$	50		$	2		$	2

U.S. Plans only	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	45		$	52		$	1		$	1
Interest cost	125			114			4			4
Expected return on plan assets	(173		)	(162		)	—			—
Amortization of prior service credit	(4		)	(8		)	—			—
Recognized actuarial loss (gain)	53			104			(1		)	—
Net periodic benefit cost	$	46		$	100		$	4		$	5

Significant non-U.S. Plans only	Pension						Postretirement
For the Three Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014		2013
Service cost	$	39		$	36		$	—	$	—
Interest cost	99			87			1		1
Expected return on plan assets	(163		)	(144		)	—		—
Amortization of prior service credit	(1		)	(2		)	—		—
Recognized actuarial loss	26			27			1		1
Net periodic benefit cost	$	—		$	4		$	2	$	2

Significant non-U.S. Plans only	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014		2013
Service cost	$	78		$	73		$	1	$	1
Interest cost	197			175			2		2
Expected return on plan assets	(325		)	(291		)	—		—
Amortization of prior service cost	(2		)	(3		)	—		—
Recognized actuarial loss	51			54			1		1
Net periodic benefit cost	$	(1	)	$	8		$	4	$	4
Curtailment (credit)	(65		)	—			—		—
Total cost (credit)	$	(66	)	$	8		$	4	$	4

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
June 30,	2014		2013		2014		2013
Weighted average assumptions:
Expected return on plan assets	7.53	%	7.66	%	—	%	—	%
Discount rate	4.74	%	4.38	%	5.03	%	4.32	%
Rate of compensation increase	2.64	%	2.43	%	—	%	—	%

The Company made approximately $106 million of contributions to its U.S. and non-U.S. defined benefit plans in the first six months of 2014. The Company expects to contribute approximately $78 million to its non-qualified U.S. pension and non-U.S. pension plans during the remainder of 2014.

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Acquisitions

6 Months Ended

Jun. 30, 2014

Business Combinations [Abstract]

Acquisitions

Acquisitions

The Company completed nine acquisitions during the first six months of 2014.

• January - Marsh & McLennan Agency ("MMA") acquired Barney & Barney, a San Diego-based insurance broking firm that provides insurance, risk management, and employee benefits solutions to businesses and individuals throughout the U.S. and abroad. Also in January, Marsh acquired Central Insurance Services, an independent insurance broker in Scotland that provides insurance broking and risk advisory services to companies of all sizes across industry sectors.

• February - MMA acquired Great Lakes Employee Benefits Services, Inc., an employee group benefits consulting and brokerage firm based in Michigan, and Bond Network, Inc., a surety bonding agency based in North Carolina.

• March - MMA acquired Capstone Insurance Services, LLC, an agency that provides property/casualty insurance and risk management solutions to businesses and individuals throughout South Carolina, and Mercer acquired Transition Assist, a retiree exchange specializing in helping retirees in employer-sponsored plans select Medicare supplemental health care insurance.

• May - MMA acquired Kinker-Eveleigh Insurance Agency, an Ohio-based agency specializing in property-casualty and employee benefits solutions, and VISICOR, a full-service employee benefits brokerage and consulting firm based in Texas.

• June - MMA acquired Senn Dunn Insurance, an insurance agency located in North Carolina.

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

Total purchase consideration for acquisitions made during the first six months of 2014 was $534 million, which consisted of cash paid of $394 million and deferred purchase and estimated contingent consideration of $140 million. Contingent consideration arrangements are primarily based on EBITDA and revenue targets over periods ranging from two to four years. The fair value of the contingent consideration was based on projected revenue and earnings of the acquired entities. The estimated fair values of assets acquired and liabilities assumed are subject to adjustment when purchase accounting is finalized. The Company also paid $9 million of deferred purchase consideration and $36 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 2014 based on their fair values:

For the Six Months Ended June 30, 2014
(Amounts in millions)
Cash	$	394
Estimated fair value of deferred/contingent consideration	140
Total Consideration	$	534
Allocation of purchase price:
Cash and cash equivalents	$	20
Accounts receivable, net	5
Other current assets	—
Property, plant, and equipment	3
Intangible assets	210
Goodwill	334
Other assets	2
Total assets acquired	574
Current liabilities	35
Other liabilities	5
Total liabilities assumed	40
Net assets acquired	$	534

Prior Year Acquisitions

The Risk and Insurance Services segment completed six acquisitions during 2013.

• June - 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.

• July - Guy Carpenter acquired Smith Group, a specialist disability reinsurance risk manager and consultant based in Maine.

• September - 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.

• November - Marsh & McLennan Agency ("MMA") acquired Elsey & Associates, a Texas-based provider of surety bonds and insurance coverage to the construction industry.

• December - MMA acquired Cambridge Property and Casualty, a Michigan-based company providing insurance and risk management services to high net worth individuals and mid-sized businesses.

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

The Consulting segment completed two acquisitions during 2013.

• July - Oliver Wyman acquired Corven, a U.K.-based management consultancy firm.

• August - Mercer acquired Global Remuneration Solutions, a market leading compensation consulting firm based in South Africa.

Total purchase consideration for acquisitions made during the six months of 2013 was $109 million, which consisted of cash paid of $95 million and deferred purchase and estimated contingent consideration of $14 million. Contingent consideration arrangements are primarily based on EBITDA and revenue targets over periods ranging from two to four years. The fair value of the contingent consideration was based on projected revenue and earnings of the acquired entities. The estimated fair values of assets acquired and liabilities assumed are subject to adjustment when purchase accounting is finalized. The Company also paid $3 million of deferred purchase consideration and $5 million of 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 six months of 2014 and 2013. In accordance with accounting guidance related to pro-forma disclosure, the information presented for the 2014 acquisitions is as if they occurred on January 1, 2013 and reflects acquisitions made in 2013 as if they occurred on January 1, 2012. The unaudited 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 June 30,				Six Months Ended June 30,
(In millions, except per share figures)	2014		2013		2014		2013
Revenue	$	3,306	$	3,152	$	6,591	$	6,348
Income from continuing operations	$	440	$	406	$	900	$	823
Net income attributable to the Company	$	431	$	393	$	877	$	812
Basic net income per share:
– Continuing operations	$	0.79	$	0.72	$	1.60	$	1.46
– Net income attributable to the Company	$	0.79	$	0.71	$	1.60	$	1.48
Diluted net income per share:
– Continuing operations	$	0.78	$	0.71	$	1.58	$	1.44
– Net income attributable to the Company	$	0.78	$	0.70	$	1.58	$	1.45

The consolidated statements of income include the results of operations of acquired companies since their respective acquisition dates. The consolidated statement of income for the three- and six-month periods ending June 30, 2014 includes approximately $38 million of revenue and $5 million of net operating income and approximately $59 million of revenue and $6 million of net operating income, respectively, related to acquisitions made in 2014.

Subsequent Acquisition

On June 23, 2014, Mercer announced that it had entered into a definitive agreement to acquire a 34% stake in South Africa-based Alexander Forbes Group Holdings Limited ("Alexander Forbes") for approximately $312 million, becoming a strategic shareholder after Alexander Forbes successfully launched an initial public offering. Mercer will purchase its stake in Alexander Forbes in two tranches at 7.50 South African Rand per share. On July 24, 2014, the Company purchased 14.9% of Alexander Forbes common shares for approximately $140 million. The remaining 19.1% of the common shares will be purchase by early October 2014, subject to the receipt of requisite regulatory approvals. Alexander Forbes is listed on the Johannesburg Stock Exchange. In July, the Company entered into a forward contract that expires on September 30, 2014 to sell British Pounds and purchase South African Rand to lock in current foreign exchange rates for the remaining commitment. Gain or loss on the forward contract will flow through earnings in the third quarter of 2014. The investment in Alexander Forbes will be accounted for using the equity method.

Alexander Forbes principally focuses on employee benefits and investment solutions for institutional clients, and financial wellbeing and retail financial solutions for individual clients. Services include retirement funds and investment consulting, actuarial and administration services, employee risk benefits and health-care consulting, multi-manager investments solutions, and personal lines and business insurance. The range of services provided by Alexander Forbes aligns closely with Mercer's global business.

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Retirement Benefits (Schedule Of Defined Benefit Plan Weighted Average Assumption Used In Calculating Net Periodic Benefit Cost) (Details)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Pension Benefits [Member]
Weighted average assumptions:
Expected return on plan assets	7.53%	7.66%
Discount rate	4.74%	4.38%
Rate of compensation increase	2.64%	2.43%
Postretirement Benefits [Member]
Weighted average assumptions:
Expected return on plan assets	0.00%	0.00%
Discount rate	5.03%	4.32%
Rate of compensation increase	0.00%	0.00%

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Supplemental Disclosures To The Consolidated Statements Of Cash Flows

6 Months Ended

Jun. 30, 2014

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 six-month periods ended June 30, 2014 and 2013.

(In millions of dollars)	2014			2013
Assets acquired, excluding cash	$	554		$	126
Liabilities assumed	(40		)	(24		)
Contingent/deferred purchase consideration	(140		)	(14		)
Net cash outflow for current year acquisitions	374			88
Deferred purchase consideration from prior years' acquisitions	9			3
Net cash outflow for acquisitions	$	383		$	91

(In millions of dollars)	2014		2013
Interest paid	$	82	$	89
Income taxes paid	$	218	$	185

The Company had non-cash issuances of common stock of $102 million and $138 million, respectively, for the six months ended June 30, 2014 and 2013, primarily related to its share-based payment plans. The Company recorded stock-based compensation expense related to equity awards of $41 million and $54 million for the six-month periods ended June 30, 2014 and 2013, respectively.

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Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2014

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 three- and six-month periods ended June 30, 2014 and 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 April 1, 2014	$	5	$	(2,847	)	$	134	$	(2,708	)
Other comprehensive income (loss) before reclassifications	—		(69		)	137		68
Amounts reclassified from accumulated other comprehensive income	—		33			—		33
Net current period other comprehensive income (loss)	—		(36		)	137		101
Balance as of June 30, 2014	$	5	$	(2,883	)	$	271	$	(2,607	)

(In millions of dollars)	Unrealized Investment Gains			Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments			Total
Balance as of April 1, 2013	4			(3,267		)	(116		)	$	(3,379	)
Other comprehensive income (loss) before reclassifications	(1		)	(18		)	(84		)	(103		)
Amounts reclassified from accumulated other comprehensive income	—			47			—			47
Net current period other comprehensive income (loss)	(1		)	29			(84		)	(56		)
Balance as of June 30, 2013	$	3		$	(3,238	)	$	(200	)	$	(3,435	)

(In millions of dollars)	Unrealized Investment Gains		Pension/Post-Retirement Plans Gains (Losses)			Foreign Currency Translation Adjustments		Total
Balance as of January 1, 2014	$	5	$	(2,682	)	$	56	$	(2,621	)
Other comprehensive income (loss) before reclassifications	—		(268		)	215		(53		)
Amounts reclassified from accumulated other comprehensive income	—		67			—		67
Net current period other comprehensive income (loss)	—		(201		)	215		14
Balance as of June 30, 2014	$	5	$	(2,883	)	$	271	$	(2,607	)

(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		)	121			(340		)	(220		)
Amounts reclassified from accumulated other comprehensive income	—			92			—			92
Net current period other comprehensive income (loss)	(1		)	213			(340		)	(128		)
Balance as of June 30, 2013	$	3		$	(3,238	)	$	(200	)	$	(3,435	)

The components of other comprehensive income (loss) for the three- and six-month periods ended June 30, 2014 and 2013 are as follows:

Three Months Ended June 30,	2014									2013
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	136		$	(1	)	$	137		$	(85	)	$	(1	)	$	(84	)
Unrealized investment gains (losses)	—			—			—			(1		)	—			(1		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(2		)	(1		)	(1		)	(5		)	(2		)	(3		)
Net actuarial losses (a)	49			15			34			78			28			50
Subtotal	47			14			33			73			26			47
Foreign currency translation adjustments	(91		)	(20		)	(71		)	(23		)	(5		)	(18		)
Other	2			—			2			—			—			—
Pension/post-retirement plans (losses) gains	(42		)	(6		)	(36		)	50			21			29
Other comprehensive income (loss)	$	94		$	(7	)	$	101		$	(36	)	$	20		$	(56	)
(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.

Six Months Ended June 30,	2014									2013
(In millions of dollars)	Pre-Tax			Tax			Net of Tax			Pre-Tax			Tax			Net of Tax
Foreign currency translation adjustments	$	207		$	(8	)	$	215		$	(345	)	$	(5	)	$	(340	)
Unrealized investment gains (losses)	—			—			—			(1		)	—			(1		)
Pension/post-retirement plans:
Amortization of losses (gains) included in net periodic pension cost:
Prior service gains (a)	(5		)	(2		)	(3		)	(11		)	(4		)	(7		)
Net actuarial losses (a)	100			30			70			156			57			99
Subtotal	95			28			67			145			53			92
Effect of remeasurement	(166		)	(33		)	(133		)	—			—			—
Effect of curtailment	(65		)	(13		)	(52		)	—			—			—
Foreign currency translation adjustments	(108		)	(22		)	(86		)	157			36			121
Other	3			—			3			—			—			—
Pension/post-retirement plans (losses) gains	(241		)	(40		)	(201		)	302			89			213
Other comprehensive (loss) income	$	(34	)	$	(48	)	$	14		$	(44	)	$	84		$	(128	)

(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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Dispositions

6 Months Ended

Jun. 30, 2014

Discontinued Operations and Disposal Groups [Abstract]

Dispositions

Dispositions

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

	Three Months Ended June 30,						Six Months Ended June 30,
(In millions of dollars, except per share figures)	2014			2013			2014			2013
Disposals of discontinued operations	$	—		$	(6	)	$	—		$	(5	)
Income tax expense (credit)	2			(1		)	3			(12		)
Disposals of discontinued operations, net of tax	(2		)	(5		)	(3		)	7
Discontinued operations, net of tax	$	(2	)	$	(5	)	$	(3	)	$	7
Discontinued operations, net of tax per share
– Basic	$	(0.01	)	$	—		$	(0.01	)	$	0.01
– Diluted	$	(0.01	)	$	(0.01	)	$	(0.01	)	$	0.02

The three and six months ended June 30, 2013 include estimated costs covered under the indemnity related to the Kroll sale. The six months ended June 30, 2013 also includes tax indemnities related to the Putnam sale.

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Debt Estimated Fair Value of Significant Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	$ 333	$ 334
Long-term debt	3,212	2,621
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term debt	333	334
Long-term debt	$ 3,480	$ 2,819

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Common Stock (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	6 Months Ended
	May 31, 2014	Jun. 30, 2014	Jun. 30, 2013
Equity, Class of Treasury Stock [Line Items]
Payments for repurchase of common stock		$ 350,000,000	$ 250,000,000
Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)		7.0	6.4
Share repurchases program, authorized amount	2,000,000,000
Stock repurchase program, remaining authorized repurchase amount		$ 1,800,000,000

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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	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Gain on Notes	$ 1	$ 1
Other operating expenses net income effect	0	0
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss on Swaps	$ (1)	$ (1)

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Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2014

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 June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	62		$	61		$	1		$	—
Interest cost	161			144			3			3
Expected return on plan assets	(250		)	(225		)	—			—
Amortization of prior service credit	(3		)	(6		)	—			—
Recognized actuarial loss	53			80			—			1
Net periodic benefit cost	$	23		$	54		$	4		$	4
Combined U.S. and significant non-U.S. Plans	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	123		$	125		$	2		$	2
Interest cost	322			289			6			6
Expected return on plan assets	(498		)	(453		)	—			—
Amortization of prior service credit	(6		)	(11		)	—			—
Recognized actuarial loss	104			158			—			1
Net periodic benefit cost	$	45		$	108		$	8		$	9
Curtailment (credit)	(65		)	—			—			—
Total cost (credit)	$	(20	)	$	108		$	8		$	9
U.S. Plans only	Pension						Postretirement
For the Three Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	23		$	25		$	1		$	—
Interest cost	62			57			2			2
Expected return on plan assets	(87		)	(81		)	—			—
Amortization of prior service credit	(2		)	(4		)	—			—
Recognized actuarial loss	27			53			(1		)	—
Net periodic benefit cost	$	23		$	50		$	2		$	2

U.S. Plans only	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014			2013
Service cost	$	45		$	52		$	1		$	1
Interest cost	125			114			4			4
Expected return on plan assets	(173		)	(162		)	—			—
Amortization of prior service credit	(4		)	(8		)	—			—
Recognized actuarial loss (gain)	53			104			(1		)	—
Net periodic benefit cost	$	46		$	100		$	4		$	5

Significant non-U.S. Plans only	Pension						Postretirement
For the Three Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014		2013
Service cost	$	39		$	36		$	—	$	—
Interest cost	99			87			1		1
Expected return on plan assets	(163		)	(144		)	—		—
Amortization of prior service credit	(1		)	(2		)	—		—
Recognized actuarial loss	26			27			1		1
Net periodic benefit cost	$	—		$	4		$	2	$	2

Significant non-U.S. Plans only	Pension						Postretirement
For the Six Months Ended June 30,	Benefits						Benefits
(In millions of dollars)	2014			2013			2014		2013
Service cost	$	78		$	73		$	1	$	1
Interest cost	197			175			2		2
Expected return on plan assets	(325		)	(291		)	—		—
Amortization of prior service cost	(2		)	(3		)	—		—
Recognized actuarial loss	51			54			1		1
Net periodic benefit cost	$	(1	)	$	8		$	4	$	4
Curtailment (credit)	(65		)	—			—		—
Total cost (credit)	$	(66	)	$	8		$	4	$	4

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
June 30,	2014		2013		2014		2013
Weighted average assumptions:
Expected return on plan assets	7.53	%	7.66	%	—	%	—	%
Discount rate	4.74	%	4.38	%	5.03	%	4.32	%
Rate of compensation increase	2.64	%	2.43	%	—	%	—	%

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Goodwill and Other Intangibles (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Goodwill	$ 7,230	$ 6,804	$ 6,893	$ 6,792
Aggregate amortization expense	42	35
Risk and Insurance Services Segment [Member]
Segment Reporting Information [Line Items]
Goodwill	5,000
Consulting Segment [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 2,200

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Restructuring Costs

6 Months Ended

Jun. 30, 2014

Restructuring and Related Activities [Abstract]

Restructuring Costs

Restructuring Costs

The Company recorded total restructuring costs of $6 million in the first six months of 2014 primarily for future rent under non-cancelable leases. These costs were incurred in Corporate.

Details of the restructuring activity from January 1, 2013 through June 30, 2014, which includes liabilities from actions prior to 2014, are as follows:

(In millions of dollars)	Liability at 1/1/13		Amounts Accrued		Cash Paid			Other			Liability at 12/31/13		Amounts Accrued		Cash Paid			Other			Liability at 6/30/14
Severance	$	36	$	9	$	(33	)	$	(1	)	$	11	$	2	$	(5	)	$	—		$	8
Future rent under non-cancelable leases and other costs	134		13		(32		)	(2		)	113		4		(15		)	(1		)	101
Total	$	170	$	22	$	(65	)	$	(3	)	$	124	$	6	$	(20	)	$	(1	)	$	109

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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Principles of Consolidation and Other Matters (Policies)

6 Months Ended

Jun. 30, 2014

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. While 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, 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 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's effective tax rate in the second quarter of 2014 was 27.6% compared with 28.9% in the second quarter of 2013. The effective tax rates for the first six months of 2014 and 2013 were 28.6% and 29.5%, respectively. These rates reflect non-U.S. income taxed at rates below the U.S. statutory rate, including the effect of repatriation, as well as the impact of discrete tax matters such as the resolution of tax examinations and expirations of statutes of limitations.

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.

Reclassifications

In the first quarter of 2014, the Company enhanced its operating cash flow presentation within the statement of cash flows to show on single lines the impact of pension and other benefit plan contributions in excess of the related expenses, and the non-cash impact of equity share awards. Previously, the cash flow impact of those items was presented as part of changes in other assets and other liabilities, and changes in other liabilities, respectively. The prior year’s presentation was conformed to the current presentation for the following line items within operating cash flows:

• Share based compensation expense

• Changes in other assets

• Contributions to pension and other benefit plans in excess of current year expense/credit

• Changes in other liabilities

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 Financial Accounting Standards Board ("FASB") in Accounting Standards Codification ("ASC") Topic No. 820 ("Fair Value Measurements and Disclosures"). 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 and money market mutual funds).

Assets and liabilities utilizing Level 1 inputs include exchange-traded equity securities and mutual funds.

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).

Assets and liabilities utilizing Level 2 inputs include corporate and municipal bonds, senior notes and interest rate swaps.

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).

Liabilities utilizing Level 3 inputs include liabilities for contingent purchase consideration.

Valuation Techniques

Equity Securities and Mutual 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.

Interest Rate Swap Derivatives - 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

At June 30, 2014, the fair value of the first $250 million of Senior Notes maturing in July 2014 was estimated to be the carrying value of those notes based on discounted future cash flows using current interest rates available for debt with similar terms and remaining maturities, adjusted by the fair value of the interest rate swap derivatives, discussed above. In the first quarter of 2011, the Company entered into two interest rate swaps to 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 meeting EBITDA and revenue targets over periods ranging from two to four years. The fair value of contingent consideration is estimated as the present value of future cash flows resulting from the projected revenue and earnings of the acquired entities.

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Acquisitions (Pro-Forma Information) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenue	$ 3,306	$ 3,152	$ 6,591	$ 6,348
Income from continuing operations	440	406	900	823
Net income attributable to the Company	431	393	877	812
Basic net income per share:
Basic net income per share - Continuing operations (in dollars per share)	$ 0.79	$ 0.72	$ 1.60	$ 1.46
Basic net income per share - Net income attributable to the Company (in dollars per share)	$ 0.79	$ 0.71	$ 1.60	$ 1.48
Diluted net income per share:
Diluted net income per share - Continuing operations (in dollars per share)	$ 0.78	$ 0.71	$ 1.58	$ 1.44
Diluted net income per share - Net income attributable to the Company (in dollars per share)	$ 0.78	$ 0.70	$ 1.58	$ 1.45
Current Fiscal Period Acquisitions [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenue related to acquisitions	38		59
Operating income related to acquisitions	$ 5		$ 6

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Fiduciary Assets and Liabilities (Details) (USD $)			6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Risk and Insurance Services Segment [Member]	Jun. 30, 2013 Risk and Insurance Services Segment [Member]	Jun. 30, 2014 Consulting Segment [Member]	Jun. 30, 2013 Consulting Segment [Member]	Jun. 30, 2014 Consulting Segment [Member]	Jun. 30, 2013 Consulting Segment [Member]	Dec. 31, 2013 Mercer Consulting Group [Member]	Jun. 30, 2014 Variable Interest Entity, Not Primary Beneficiary [Member] Mercer Consulting Group [Member]
Fiduciary Assets and Liabilities [Line Items]
Interest on fiduciary funds			$ 12,000,000	$ 14,000,000	$ 2,000,000	$ 1,000,000	$ 3,000,000	$ 2,000,000
Net uncollected premiums and claims receivable and payable	8,700,000,000	8,200,000,000
Assets in trusts or funds for management or trustee fee									$ 103,000,000,000	$ 19,000,000,000

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Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Fixed assets, accumulated depreciation and amortization	$ 1,663	$ 1,597
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	$ 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	14,993,131	13,882,204

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Principles of Consolidation and Other Matters

6 Months Ended

Jun. 30, 2014

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. While 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, 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, 2013 (the “2013 10-K”).

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 consolidated financial statements as of and for the three- and six-month periods ended June 30, 2014 and 2013.

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 $200 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. Trident II fully harvested all its portfolio investments and made final distributions to its partners during the fourth quarter of 2013. As of the end of 2013, the Company recognized all the performance fees related to its general partnership interest in Trident II. The Company recordedgains on its investment in Trident II of $20 million in the six months endedJune 30, 2013 including $15 million of deferred performance fees recognized in the first quarter of 2013. For the three months ended June 30, 2014, the Company recorded investment losses of $2 million. For the six months ended June 30, 2014, the Company recorded performance fees of $7 million from Trident III which had been deferred, and that are no longer subject to claw-back and $3 million of gains related to the Company's private equity investments. At June 30, 2014, the Company had deferred performance fees of approximately $37 million related to Trident III. Recognition of these deferred performance fees will only occur as the Trident III 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 second quarter of 2014 was 27.6% compared with 28.9% in the second quarter of 2013. The effective tax rates for the first six months of 2014 and 2013 were 28.6% and 29.5%, respectively. These rates reflect non-U.S. income taxed at rates below the U.S. statutory rate, including the effect of repatriation, as well as the impact of discrete tax matters such as the resolution of tax examinations and expirations of statutes of limitations.

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 decreased from

$128 million at December 31, 2013 to $105 million at June 30, 2014. It is reasonably possible that the total amount of unrecognized tax benefits will decrease between zero and approximately $7 million within the next twelve months due to settlements of audits and expirations of statutes of limitation.

During the second quarter of 2014, the Company settled the federal tax audit with the IRS for the year 2012. During the second quarter of 2013, the Company settled federal tax audits with the IRS for the years 2007 and 2009 through 2011.

Reclassifications

In the first quarter of 2014, the Company enhanced its operating cash flow presentation within the statement of cash flows to show on single lines the impact of pension and other benefit plan contributions in excess of the related expenses, and the non-cash impact of equity share awards. Previously, the cash flow impact of those items was presented as part of changes in other assets and other liabilities, and changes in other liabilities, respectively. The prior year’s presentation was conformed to the current presentation for the following line items within operating cash flows:

• Share based compensation expense

• Changes in other assets

• Contributions to pension and other benefit plans in excess of current year expense/credit

• Changes in other liabilities

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Retirement Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 31, 2014	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Contributions to U.S. non qualified and non-U.S. Pension Plan		$ 106
Non-U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Effect of plan amendment on accumulated benefit obligation		147
Effect of plan amendment on funded status		137
Gain (loss) due to curtailments	65	65	0
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Gain (loss) due to curtailments		65	0
Expected contribution during remainder of 2013		$ 78
Equity Funds [Member] | United States Pension and Postretirement Benefit Plan of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan, equities, prior period		58.00%
Actual asset allocation percentage of equity		60.00%
Fixed Income Funds [Member] | United States Pension and Postretirement Benefit Plan of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan, equities, prior period		42.00%
Actual asset allocation percentage of equity		40.00%
United Kingdom [Member] | Equity Funds [Member] | Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan, equities, prior period		50.00%
Actual asset allocation percentage of equity		48.00%
United Kingdom [Member] | Fixed Income Funds [Member] | Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation U.S. Plan, equities, prior period		50.00%
Actual asset allocation percentage of equity		52.00%
United Kingdom [Member] | Geographic Concentration Risk [Member] | Non-U.S. Plans [Member] | Non-U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Concentration risk percentage		82.00%

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Segment Information (Details of Operating Segment Revenue) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment Reporting Information [Line Items]
Revenue	$ 3,300		$ 3,088		$ 6,564		$ 6,214
Risk and Insurance Services Segment [Member]
Segment Reporting Information [Line Items]
Interest on fiduciary funds					12		14
Consulting Segment [Member]
Segment Reporting Information [Line Items]
Interest on fiduciary funds	2		1		3		2
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	3,311		3,098		6,582		6,231
Operating Segments [Member] | Marsh Insurance Group [Member]
Segment Reporting Information [Line Items]
Revenue	1,495		1,402		2,952		2,797
Operating Segments [Member] | Guy Carpenter Reinsurance Group [Member]
Segment Reporting Information [Line Items]
Revenue	296		286		678		662
Operating Segments [Member] | Mercer Consulting Group [Member]
Segment Reporting Information [Line Items]
Revenue	1,071		1,044		2,132		2,085
Operating Segments [Member] | Oliver Wyman Group Consulting Group [Member]
Segment Reporting Information [Line Items]
Revenue	449		366		820		687
Operating Segments [Member] | Risk and Insurance Services Segment [Member]
Segment Reporting Information [Line Items]
Revenue	1,791	[1]	1,688	[1]	3,630	[2]	3,459	[2]
Interest on fiduciary funds	6		6		12		14
Operating Segments [Member] | Consulting Segment [Member]
Segment Reporting Information [Line Items]
Revenue	1,520	[3]	1,410	[3]	2,952	[4]	2,772	[4]
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	(11)		(10)		(18)		(17)
Intersegment Eliminations [Member] | Risk and Insurance Services Segment [Member]
Segment Reporting Information [Line Items]
Revenue	3		3		3		3
Intersegment Eliminations [Member] | Consulting Segment [Member]
Segment Reporting Information [Line Items]
Revenue	$ 8		$ 7		$ 15		$ 14

[1] Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $6 million in both 2014 and 2013, and equity method income of $6 million and $7 million in 2014 and 2013, respectively.

[2] Includes inter-segment revenue of $3 million in both 2014 and 2013, interest income on fiduciary funds of $12 million and $14 million in 2014 and 2013, respectively, and equity method income of $6 million and $8 million in 2014 and 2013, respectively.

[3] Includes inter-segment revenue of $8 million and $7 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $2 million in 2014 and $1 million in 2013.

[4] Includes inter-segment revenue of $15 million and $14 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $3 million and $2 million in 2014 and 2013, respectively.

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Per Share Data (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Diluted EPS Calculation Continuing Operations

Basic and Diluted EPS Calculation - Continuing Operations	Three Months Ended June 30,				Six Months Ended June 30,
(In millions, except per share figures)	2014		2013		2014		2013
Net income from continuing operations	$	440	$	400	$	897	$	812
Less: Net income attributable to non-controlling interests	7		7		20		18
	$	433	$	393	$	877	$	794
Basic weighted average common shares outstanding	549		551		548		549
Dilutive effect of potentially issuable common shares	7		8		8		9
Diluted weighted average common shares outstanding	556		559		556		558
Average stock price used to calculate common stock equivalents	$	49.67	$	39.15	$	48.75	$	37.68

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Nature of Operations (Details) (USD $) In Billions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014 segment	Jun. 30, 2014 Consulting Segment [Member] business_group	Dec. 31, 2013 Mercer Consulting Group [Member]
Segment Reporting Information [Line Items]
Number of business segments	2
Number of business groups		2
Assets under Management, Carrying Amount			$ 103

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Debt

6 Months Ended

Jun. 30, 2014

Debt Disclosure [Abstract]

Debt

Debt

The Company’s outstanding debt is as follows:

(In millions of dollars)	June 30, 2014		December 31, 2013
Short-term:
Current portion of long-term debt	$	333	$	334
Long-term:
Senior notes – 5.875% due 2033	297		297
Senior notes – 5.375% due 2014	322		323
Senior notes – 5.75% due 2015	230		230
Senior notes – 2.30% due 2017	249		249
Senior notes – 9.25% due 2019	399		399
Senior notes – 4.80% due 2021	497		497
Senior notes – 2.55% due 2018	248		248
Senior notes – 4.05% due 2023	248		247
Senior notes – 3.50% due 2024	595		—
Mortgage – 5.70% due 2035	408		413
Term Loan Facility - due 2016	50		50
Other	2		2
	3,545		2,955
Less current portion	333		334
	$	3,212	$	2,621

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

In May 2014, the Company issued $600 million of 3.50%ten-year senior notes. The net proceeds of this offering were used for general corporate purposes, which included the repayment of the existing 5.375% senior notes, which matured on July 15, 2014.

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 were used for general corporate purposes, which included 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 cost for early redemption.

In February 2013, the Company repaid its 4.850%$250 million senior notes.

On March 28, 2014, the Company and certain of its foreign subsidiaries amended its $1.0 billion facility as discussed below into a $1.2 billion multi-currency five-year unsecured revolving credit facility. The interest rate on this facility is based on LIBOR plus a fixed margin which varies with the Company's credit ratings. This facility expires in March 2019 and requires the Company to maintain certain coverage and leverage ratios which are tested quarterly. There were no borrowings outstanding under this facility at June 30, 2014.

The Company and certain of its foreign subsidiaries previously maintained a $1.0 billion multi-currency five-year revolving credit facility. The facility was previously due to expire in October 2016 and was in effect until March 2014. There were no borrowings outstanding under this facility at the time it was amended.

In December 2012, the Company closed on a $50 million, three-year term loan facility. The interest rate on this facility at June 30, 2014 was 1.28%, 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 June 30, 2014.

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 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 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 are deemed to be perfectly effective in accordance with applicable accounting guidance. 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. These swaps were settled in July 2014 at the time of the repayment of the senior notes. 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 June 30, 2014 and 2013 are as follows:

	2014							2013
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	$	(1	)	$	1	$	—	$	(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 short-term and long-term debt 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.

	June 30, 2014				December 31, 2013
(In millions of dollars)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Short-term debt	$	333	$	333	$	334	$	334
Long-term debt	$	3,212	$	3,480	$	2,621	$	2,819

The fair value of the Company’s short-term debt, which consists primarily of term debt maturing within the next year, approximates its carrying value. The estimated fair value of a primary portion of the Company's long-term debt is 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.