Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Consolidated Legg Mason, Inc.
NET INCOME	$ 62,919	$ 5,021	$ 157,858	$ 78,633
Other comprehensive income (loss):
Foreign currency translation adjustment	(37,176)	(32,240)	(16,512)	(21,524)
Unrealized gains (losses) on investment securities:
Unrealized holding losses, net of tax benefit of $(3)	0	0	0	(5)
Tax benefit on unrealized holding losses on securities			0	(3)
Reclassification adjustment for losses included in net income	0	0	0	5
Net unrealized losses on investment securities	0	0	0	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	1,922	0	2,990	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	0	(368)	0	405
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	0	(405)	0	(405)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0	0	0	(114)
Total other comprehensive income (loss)	(35,254)	(33,013)	(13,522)	(21,638)
COMPREHENSIVE INCOME	27,665	(27,992)	144,336	56,995
Net Income (Loss) Attributable to Noncontrolling Interest	(1,400)	124	(1,009)	1,548
Consolidated Entity Excluding Consolidated Investment Vehicles Before Eliminations [Member]
NET INCOME	64,510	5,075	159,189	77,352
Unrealized gains (losses) on investment securities:
Net Income (Loss) Attributable to Noncontrolling Interest	191	178	322	267
COMPREHENSIVE INCOME ATTRIBUTABLE TO LEGG MASON, INC.	$ 29,065	$ (28,116)	$ 145,345	$ 55,447