Segment Information (Tables)

3 Months Ended

Mar. 31, 2017

Segment Reporting [Abstract]

Schedule of reconciliation of segment income before tax to income from continuing operations before income taxes

Revenue from continuing operations for each of the Company’s principal product and service lines is as follows (in millions):

Three months ended March 31	2017		2016
Commercial Risk Solutions	$	984	$	961
Reinsurance Solutions	371		371
Retirement Solutions	386		395
Health Solutions	372		292
Data & Analytic Services	268		259
Elimination	—		(2		)
Total revenue	2,381		2,276