Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Statutory tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	0.30%	0.20%	0.30%
Tax benefit arising from payment of a portion of the European Commission Fine by a subsidiary	(5.00%)	0.00%	0.00%
Dividends received from deconsolidated operations	(1.30%)	(0.90%)	(1.50%)
Remeasurement effect	(4.90%)	(1.00%)	(1.00%)
Other, including changes in liabilities recorded for uncertain tax positions	(0.10%)	(0.60%)	(0.80%)
Effective income tax rate	24.00%	32.70%	32.00%