Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
U.S. federal statutory tax rate	21.00%	21.00%	31.50%
State income taxes, net of federal benefit	0.10%	0.20%	0.10%
Dividends received from deconsolidated operations	0.00%	0.00%	(1.40%)
Foreign earnings taxed at rates other than the U.S. federal statutory tax rate	(2.00%)	7.10%	2.80%
Foreign dividend withholding taxes	5.10%	3.70%	(0.20%)
Reversal of dividend withholding tax due to foreign subsidiary tax holiday	0.00%	(5.10%)	0.00%
Adjustment of deferred tax assets and liabilities to lower tax rate	0.00%	0.00%	4.60%
Reduction of U.S. tax liability on undistributed foreign earnings to amounts payable under one-time transition tax	0.00%	0.00%	(8.30%)
Changes in uncertain tax positions	5.60%	1.40%	0.80%
Other	1.30%	(1.10%)	0.40%
Effective income tax rate	31.10%	27.20%	30.30%

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 applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference, between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, that is attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority interest income (expense), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, change in enacted tax rate, prior year income taxes, change in deferred tax asset valuation allowance, and other adjustments.

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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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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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 income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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Amount of income tax expense (benefit) from continuing operations attributed to an adjustment of the deferred tax liability or asset for enacted changes in tax laws or rates, percent

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