CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Investment advisory fees
Separate accounts	$ 204,793	$ 200,972
Funds	400,144	352,699
Performance fees	18,614	22,774
Distribution and service fees	92,064	96,314
Other	1,493	1,406
Total operating revenues	717,108	674,165
Operating Expenses
Compensation and benefits	300,352	266,074
Transition-related compensation	11,395	2,713
Total compensation and benefits	311,747	268,787
Distribution and servicing	180,756	184,702
Communications and technology	40,501	39,976
Occupancy	33,238	33,675
Amortization of intangible assets	5,578	5,728
Other	44,922	38,520
Total operating expenses	616,742	571,388
Operating Income	100,366	102,777
Other Non-Operating Income (Expense)
Interest income	3,055	1,815
Interest expense	(22,361)	(22,801)
Other income (expense)	3,403	(7,291)
Other non-operating income (expense) of consolidated investment vehicles, net	5,102	(2,393)
Total other non-operating income (expense)	(10,801)	(30,670)
Income Before Income Tax Provision	89,565	72,107
Income tax provision	27,867	27,064
Net Income	61,698	45,043
Less: Net income (loss) attributable to noncontrolling interests	1,746	(2,888)
Net Income Attributable to Legg Mason, Inc.	$ 59,952	$ 47,931
Net Income per Share Attributable to Legg Mason, Inc. Common Shareholders:
Basic (in dollars per share)	$ 0.40	$ 0.30
Diluted (in dollars per share)	$ 0.40	$ 0.30
Weighted Average Number of Shares Outstanding:
Basic (in shares)	149,210	160,123
Diluted (in shares)	149,347	160,762
Dividends Declared per Share (in dollars per share)	$ 0.08	$ 0.04