Segment Information (Notes)

12 Months Ended

Mar. 31, 2017

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

16. BUSINESS SEGMENT INFORMATION

Legg Mason is a global asset management company that provides investment management and related services to a wide array of clients. The company operates in one reportable business segment, Global Asset Management. Global Asset Management provides investment advisory services to institutional and individual clients and to company-sponsored investment funds. The primary sources of revenue in Global Asset Management are investment advisory, distribution and administrative fees, which typically are calculated as a percentage of AUM and vary based upon factors such as the type of underlying investment product and the type of services that are provided. In addition, performance fees may be earned under certain investment advisory contracts for exceeding performance benchmarks.

Revenues by geographic location are primarily based on the geographic location of the advisor or the domicile of fund families managed by Legg Mason and do not necessarily reflect where the customer resides or the currency in which the revenues are denominated.

The table below reflects our revenues and long-lived assets by geographic region as of March 31:

	2017		2016		2015
OPERATING REVENUES
United States	$	2,175,721	$	1,868,076	$	1,977,975
United Kingdom	242,238		338,552		398,729
Other International	468,943		454,216		442,402
Total	$	2,886,902	$	2,660,844	$	2,819,106
INTANGIBLE ASSETS, NET AND GOODWILL
United States	$	4,240,579	$	3,134,267	$	3,135,226
United Kingdom	996,136		820,730		1,062,332
Other International	722,554		671,004		455,286
Total	$	5,959,269	$	4,626,001	$	4,652,844

For the year ended March 31, 2017, operating revenues reported in the United Kingdom in the table above did not have exposure to any single non-U.S. currency in excess of 20% of the total U.K. operating revenues. In addition, as of March 31, 2017, the percentage of Legg Mason's long-term AUM currency exposure (AUM invested in securities that are denominated in the British pound or euro, as applicable) was less than 5% for each the British pound and euro. As of March 31, 2017, Legg Mason's long-term AUM country exposure (AUM invested in securities by entities domiciled in the United Kingdom or Eurozone, as applicable) was less than 5% for each the U.K. and the Eurozone.