Segment Information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Schedule of Disclosure on Geographic Areas of Fixed Assets and Operating Lease Right-of-Use Asset

Consolidated long-lived assets, net by geographic area are as follows (in millions):

Years ended December 31	Total		United States		Americas other than U.S.		United Kingdom		Europe, Middle East, & Africa		Asia Pacific
2019(1)	$	1,550	$	686	$	145	$	225	$	319	$	175
2018	$	588	$	288	$	44	$	58	$	101	$	97

(1)

In the first quarter of 2019, Aon adopted new accounting guidance related to the treatment of leases which was applied under the modified retrospective approach. Refer to Note 2 “Summary of Significant Accounting Principles and Practices” for further information.