Noncontrolling Interests Rollforward (Tables)

12 Months Ended

Mar. 31, 2017

Noncontrolling Interest [Line Items]

Net Income (Loss) Attributable to Noncontrolling Interests [Table Text Block]

	Years Ended March 31,
	2017		2016			2015
Net income (loss) attributable to redeemable noncontrolling interests	$	52,050	$	(8,680	)	$	5,629
Net income attributable to nonredeemable noncontrolling interests	7,397		802			—
Total	$	59,447	$	(7,878	)	$	5,629

Redeemable Noncontrolling Interest [Table Text Block]

	Redeemable noncontrolling interests
	EnTrust-Permal			Clarion Partners			RARE Infrastructure			Other			Total
Balance as of March 31, 2015	$	—		$	—		$	—		$	1,949		$	1,949
Net income attributable to noncontrolling interests	—			—			1,859			513			2,372
Distributions	—			—			(1,286		)	(695		)	(1,981		)
Business acquisition	—			—			62,722			—			62,722
Foreign exchange	—			—			3,860			—			3,860
Balance as of March 31, 2016	—			—			67,155			1,767			68,922
Net income attributable to noncontrolling interests	22,146			12,171			5,742			539			40,598
Subscriptions (redemptions), net	—			—			—			2,531			2,531
Distributions	(20,494		)	(4,298		)	(3,997		)	(672		)	(29,461		)
Business acquisitions	403,200			105,300			—			317			508,817
Foreign exchange	—			—			(153		)	—			(153		)
Balance as of March 31, 2017	$	404,852		$	113,173		$	68,747		$	4,482		$	591,254

	Redeemable noncontrolling interests
	Consolidated investment vehicles(1) and other			Affiliate
				Noncontrolling Interests			Management equity plans			Total			Nonredeemable noncontrolling interests(2)
Value as of March 31, 2014	$	41,972		$	1,356		$	1,816		$	45,144		$	—
Net income attributable to noncontrolling interests	5,061			568			—			5,629			—
Net subscriptions (redemptions)	(10,484		)	25			—			(10,459		)	—
Vesting/change in estimated redemption value	—			—			5,206			5,206			—
Balance as of March 31, 2015	36,549			1,949			7,022			45,520			—
Net income (loss) attributable to noncontrolling interests	(11,052		)	2,372			—			(8,680		)	802
Net subscriptions (redemptions)	68,639			(1,981		)	—			66,658			—
Grants (settlements), net	—			—			(345		)	(345		)	21,400
Business acquisition	—			62,722			—			62,722			—
Foreign exchange	—			3,860			—			3,860			—
Vesting/change in estimated redemption value	—			—			6,050			6,050			—
Balance as of March 31, 2016	94,136			68,922			12,727			175,785			22,202
Net income attributable to noncontrolling interests	11,452			40,598			—			52,050			7,397
Net subscriptions (redemptions) and other(3)	(47,118		)	2,531			—			(44,587		)	—
Distributions	—			(29,461		)	—			(29,461		)	(6,401		)
Grants (settlements), net	—			—			5,986			5,986			4,600
Business acquisitions	—			508,817			—			508,817			—
Foreign exchange	—			(153		)	—			(153		)	—
Vesting/change in estimated redemption value	—			—			9,335			9,335			—
Balance as of March 31, 2017	$	58,470		$	591,254		$	28,048		$	677,772		$	27,798