Consolidated Statements of Income (Consolidated Legg Mason, Inc., USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010
Consolidated Legg Mason, Inc.
Investment advisory fees
Separate accounts	$ 775,534	$ 815,633	$ 814,824
Funds	1,491,325	1,486,615	1,367,297
Performance fees	49,499	96,661	71,452
Distribution and service fees	340,966	379,161	375,333
Other	5,250	6,247	5,973
Total operating revenues	2,662,574	2,784,317	2,634,879
Operating Expenses
Compensation and benefits	1,109,671	1,140,305	1,111,298
Transition-related compensation	34,638	45,048	0
Total compensation and benefits	1,144,309	1,185,353	1,111,298
Distribution and servicing	649,739	712,839	691,931
Communications and technology	164,712	161,969	163,098
Occupancy	154,816	137,861	156,967
Amortization of intangible assets	19,574	22,913	22,769
Other	190,671	176,574	167,633
Total operating expenses	2,323,821	2,397,509	2,313,696
Operating Income	338,753	386,808	321,183
Other Non-Operating Income (Expense)
Interest income	11,481	9,246	7,354
Interest expense	(87,584)	(92,157)	(126,273)
Fund support	0	0	23,171
Other income (expense)	22,097	59,596	86,892
Other non-operating income (expense) of consolidated investment vehicles, net	18,336	1,704	17,329
Total other non-operating income (expense)	(35,670)	(21,611)	8,473
Income (loss) before income tax provision	303,083	365,197	329,656
Income tax provision (benefit)	72,052	119,434	118,676
Net Income	231,031	245,763	210,980
Net income (loss) attributable to noncontrolling interest	10,214	(8,160)	6,623
Net income (Loss) attributable to Legg Mason, Inc.	$ 220,817	$ 253,923	$ 204,357
Net Income per Share Attributable to Legg Mason, Inc. Common Shareholders:
Basic (in dollars per share)	$ 1.54	$ 1.63	$ 1.33
Diluted (in dollars per share)	$ 1.54	$ 1.63	$ 1.32