Segment Information (Tables)

9 Months Ended

Sep. 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 nine-month periods ended September 30, 2014 and 2013 are as follows:

	Three Months Ended September 30,							Nine Months Ended September 30,
(In millions of dollars)	Revenue				Operating Income (Loss)			Revenue				Operating Income (Loss)
2014 –
Risk and Insurance Services	$	1,610		(a)	$	229		$	5,240		(c)	$	1,170
Consulting	1,541			(b)	274			4,493			(d)	746
Total Operating Segments	3,151				503			9,733				1,916
Corporate / Eliminations	(10		)		(58		)	(28		)		(151		)
Total Consolidated	$	3,141			$	445		$	9,705			$	1,765
2013–
Risk and Insurance Services	$	1,504		(a)	$	222		$	4,963		(c)	$	1,111
Consulting	1,437			(b)	232			4,209			(d)	624
Total Operating Segments	2,941				454			9,172				1,735
Corporate / Eliminations	(9		)		(50		)	(26		)		(147		)
Total Consolidated	$	2,932			$	404		$	9,146			$	1,588

^(a)  Includes inter-segment revenue of $0 million and $1 million in 2014and 2013, respectively, interest income on fiduciary funds of $6 million and $7 million in 2014 and 2013, respectively, and equity method income of $4 million and $2 million in 2014 and 2013, respectively.

^(b)  Includes inter-segment revenue of $10 million and $8 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 and $4 million in 2014 and 2013, respectively, interest income on fiduciary funds of $18 million and $21 million in 2014 and 2013, respectively, and equity method income of $10 million in both 2014 and 2013.

^(d)  Includes inter-segment revenue of $25 million and $22 million in 2014 and 2013, respectively, and interest income on fiduciary funds of $5 million and $3 million in 2014 and 2013, respectively.

Details of Operating Segment Revenue

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

	Three Months Ended September 30,						Nine Months Ended September 30,
(In millions of dollars)	2014			2013			2014			2013
Risk and Insurance Services
Marsh	$	1,343		$	1,241		$	4,295		$	4,038
Guy Carpenter	267			263			945			925
Total Risk and Insurance Services	1,610			1,504			5,240			4,963
Consulting
Mercer	1,112			1,072			3,244			3,157
Oliver Wyman Group	429			365			1,249			1,052
Total Consulting	1,541			1,437			4,493			4,209
Total Operating Segments	3,151			2,941			9,733			9,172
Corporate/ Eliminations	(10		)	(9		)	(28		)	(26		)
Total	$	3,141		$	2,932		$	9,705		$	9,146