Income Taxes - Effective Tax Rate Reconciliation (Details)	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%	31.50%
State income tax, net of federal tax	1.40%	3.20%	2.00%
Foreign tax rate differential	11.90%	(18.40%)	(5.70%)
Goodwill impairment	(28.30%)	0.00%	0.00%
Change in valuation allowances	(12.10%)	16.90%	(7.70%)
Income Tax and Foreign Tax Credits	2.60%	(0.60%)	(7.60%)
Arbitration Award	3.60%	0.00%	0.00%
Change in uncertain tax positions	(1.10%)	(1.50%)	(0.20%)
Withholding Taxes	(0.90%)	3.50%	2.30%
U.S. Tax on Foreign Income	(0.40%)	2.40%	2.10%
Excess tax benefits for stock compensation	(0.10%)	(1.10%)	(3.00%)
Capitalized transaction costs	(0.10%)	0.10%	1.00%
United States Tax Reform	0.007	(0.034)	(0.406)
Change in Indefinite Reinvestment Assertion	0.00%	(3.10%)	3.30%
Loss of attributes due to merger	0.00%	0.00%	5.10%
Prepaid tax asset amortization	0.00%	0.00%	0.30%
Other items, net	(0.70%)	0.00%	(1.40%)
Effective tax rate	(2.50%)	19.00%	(18.60%)

Effective Income Tax Rate Reconciliation, Arbitration Award, Percent

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Effective Income Tax Rate Reconciliation, Withholding Taxes, Percent

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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 changes in the valuation allowance for deferred tax assets.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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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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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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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Percentage of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to Tax Cuts and Jobs Act.

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