Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2016	Mar. 31, 2016
Common Stock, Par or Stated Value Per Share		$ 0.10	$ 0.10
Receivables:
Fixed assets, net		$ 165,765	$ 163,305
Current Liabilities
Business Combination, Contingent Consideration, Liability, Current		11,315
Business Combination, Contingent Consideration, Liability, Noncurrent		40,738
REDEEMABLE NONCONTROLLING INTERESTS		$ 676,164	$ 175,785
STOCKHOLDERS' EQUITY
Common Stock, Shares Authorized		500,000,000	500,000,000
Common Stock, Shares, Issued		100,982,945	107,011,664
Consolidated Entity Excluding Consolidated Investment Vehicles Before Eliminations [Member]
Current Assets
Cash and cash equivalents		$ 570,868	$ 1,329,126
Receivables:
Investment securities	[1]	446,610	515,335
Other current assets		71,072	55,405
Current Liabilities
Other current liabilities		110,834	138,301
Consolidated Investment Vehicles [Member]
Current Assets
Cash and cash equivalents		2,835	297
Receivables:
Investment securities		66,564	48,715
Other current assets		0	6,970
Other non-current assets		8,442	84
Current Liabilities
Other current liabilities		6,649	4,548
Consolidated Legg Mason, Inc.
Current Assets
Restricted cash		18,688	19,580
Receivables:
Investment advisory and related fees		425,948	334,922
Other receivables		58,891	74,694
Total Current Assets		1,661,476	2,385,044
Fixed assets, net		165,765	163,305
Intangible assets, net		4,089,766	3,146,485
Goodwill		1,958,654	1,479,516
Deferred income taxes		209,334	206,797
Other non-current assets		161,113	139,215
TOTAL ASSETS		8,254,550	7,520,446
Current Liabilities
Accrued compensation		353,216	430,736
Accounts Payable and Accrued Liabilities, Current		199,331	201,572
Short-term borrowings		0	40,000
Business Combination, Contingent Consideration, Liability, Current		11,315	26,396
Total Current Liabilities		681,345	841,553
Deferred compensation		87,698	65,897
Deferred income taxes		301,215	260,386
Business Combination, Contingent Consideration, Liability, Noncurrent		40,738	58,189
Other non-current liabilities		162,761	141,886
Long-term Debt		2,221,896	1,740,985
TOTAL LIABILITIES		3,495,653	3,108,896
REDEEMABLE NONCONTROLLING INTERESTS		676,164	175,785
STOCKHOLDERS' EQUITY
Common stock, par value $.10; authorized 500,000,000 shares; issued 107,700,310 shares in December 2015 and 111,469,142 shares in March 2015		10,098	10,701
Additional paid-in capital		2,535,249	2,693,113
Employee stock trust		(25,451)	(26,263)
Deferred compensation employee stock trust		25,451	26,263
Retained earnings		1,612,875	1,576,242
AOCI Including Portion Attributable to Noncontrolling Interest, before Tax		(98,675)	(66,493)
TOTAL STOCKHOLDERS' EQUITY		4,082,733	4,235,765
Stockholders' Equity Attributable to Parent		4,059,547	4,213,563
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		8,254,550	7,520,446
Management Equity Plan [Member] | Royce [Member]
STOCKHOLDERS' EQUITY
Stockholders' Equity Attributable to Noncontrolling Interest	[2]	$ 23,186	$ 22,202

[1] Excludes $34,272 and $13,641 of seed capital as of September 30, 2016, and March 31, 2016, respectively, which is related to Legg Mason's investments in CIVs. See Note 13.

[2] (2) Related to Royce management equity plan.