Consolidated Statements of Income (Loss) (Consolidated Legg Mason, Inc., USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consolidated Legg Mason, Inc.
Investment advisory fees
Separate accounts	$ 191,645	$ 183,426	$ 382,679	$ 365,862
Funds	372,679	362,907	743,150	719,381
Performance fees	17,346	10,279	39,367	18,845
Distribution and service fees	86,202	81,915	171,081	163,538
Other	1,980	1,768	3,992	3,361
Total operating revenues	669,852	640,295	1,340,269	1,270,987
Operating Expenses
Compensation and benefits	294,272	302,492	590,383	572,754
Distribution and servicing	155,142	145,135	325,330	314,960
Communications and technology	39,968	35,831	78,367	73,461
Occupancy	24,922	27,318	51,731	57,570
Amortization of intangible assets	3,624	3,504	7,248	7,009
Other	45,558	46,281	97,310	89,422
Total operating expenses	563,486	560,561	1,150,369	1,115,176
Operating Income (Loss)	106,366	79,734	189,900	155,811
Other Non-Operating Income (Expense)
Interest income	1,371	1,718	3,010	3,654
Interest expense	(12,859)	(14,118)	(25,927)	(33,345)
Other income (expense), net, including $68,975 debt extinguishment loss in 2012	9,662	28,655	9,747	(43,978)
Other non-operating income (loss) of consolidated investment vehicles, net	2,311	1,503	5,008	(2,631)
Total other non-operating income (expense)	485	17,758	(8,162)	(76,300)
Income (loss) before income tax provision (benefit)	106,851	97,492	181,738	79,511
Income tax provision (benefit)	19,153	16,397	44,945	11,400
Net Income (Loss)	87,698	81,095	136,793	68,111
Less: Net income (loss) attributable to noncontrolling Interests	1,410	298	2,690	(3,228)
Net Income (Loss) Attributable to Legg Mason, Inc.	$ 86,288	$ 80,797	$ 134,103	$ 71,339
Net Income (Loss) per Share Attributable to Legg Mason, Inc. Common Shareholders:
Basic (in dollars per share)	$ 0.70	$ 0.60	$ 1.08	$ 0.52
Diluted (in dollars per share)	$ 0.70	$ 0.60	$ 1.08	$ 0.52
Weighted Average Number of Shares Outstanding, Basic	122,974	134,098	124,095	136,396
Weighted Average Number of Shares Outstanding, Diluted	123,207	134,128	124,308	136,425
Dividends Declared per Share (in dollars per share)	$ 0.13	$ 0.11	$ 0.26	$ 0.22