Significant Accounting Policies (Tables)

9 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Three Months Ended				Nine Months Ended
	December 31,				December 31,
	2012		2011		2012		2011
Tax provision (benefit) at statutory U.S. federal income tax rate	(35.0	)%	35.0	%	(35.0	)%	35.0	%
Effect of changes in valuation allowances	4.5		11.0		4.5		1.8
Effect of changes in unrecognized tax benefits	(2.4	)	—		(2.7	)	(0.5	)
Changes in U.K. tax rates on deferred tax assets and liabilities	—		—		(3.2	)	(9.4	)
Other jurisdiction income taxes and other items, net (primarily foreign taxes in 2011)	4.7		(19.6	)	6.2		(6.8	)
Effective income tax provision (benefit) rate	(28.2	)%	26.4	%	(30.2	)%	20.1	%

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

	Three Months Ended December 31,						Nine Months Ended December 31,
	2012			2011			2012			2011
Net income (loss) attributable to redeemable noncontrolling interests	$	350		$	(148	)	$	168		$	8,119
Net Income (loss) reclassified to Appropriated retained earnings for consolidated investment vehicle	(5,030		)	7,157			(8,076		)	1,355
Total	$	(4,680	)	$	7,009		$	(7,908	)	$	9,474

Changes in redeemable noncontrolling interests

	Nine Months Ended December 31,
	2012			2011
Balance, beginning of period	$	24,031		$	36,713
Net income attributable to redeemable noncontrolling interests	168			8,119
Net redemptions/distributions paid to noncontrolling interest holders	(2,523		)	(16,016		)
Balance, end of period	$	21,676		$	28,816