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Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
U.S. federal statutory tax rate	31.50%	35.00%	35.00%
State income taxes, net of federal benefit	0.10%	0.30%	0.30%
Dividends received from deconsolidated operations	(1.40%)	(2.30%)	(1.50%)
Effect of exchange rate changes on deferred income taxes	0.00%	0.40%	(1.60%)
Foreign earnings taxed at rates above the U.S. federal statutory tax rate	2.80%	0.00%	0.00%
Adjustment of deferred tax assets and liabilities	4.60%	0.00%	0.00%
Reduction of U.S. tax liability on undistributed foreign earnings to estimate of one-time transition tax	(8.30%)	(0.00%)	(0.00%)
Other, including changes in liabilities recorded for uncertain tax positions	1.00%	0.10%	(0.70%)
Effective income tax rate	30.30%	33.50%	31.50%

X

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for dividend.

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