Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Statutory tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	0.30%	0.30%	0.20%
Dividends received from deconsolidated operations	(1.50%)	(1.30%)	(0.90%)
Remeasurement effect	(1.60%)	(4.90%)	(1.00%)
Tax benefit arising from payment of a portion of a fine by a subsidiary	0.00%	(5.00%)	0.00%
Other, including changes in liabilities recorded for uncertain tax positions	(0.70%)	(0.10%)	(0.60%)
Effective income tax rate	31.50%	24.00%	32.70%