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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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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying statutory federal (national) tax rate to pretax income (loss) from continuing operation attributable to other reconciling item. Excludes state and local income tax expense (benefit), federal tax expense (benefit), statutory income tax expense (benefit) outside of country of domicile, tax credit, nondeductible expense, deduction, income tax settlement, income tax contingency, and cross-border tax law.

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Amount 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 revisions of previously reported income tax expense (benefit).

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Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Taxes - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Net operating loss and tax credit carryforwards
Statutory income tax rate (as a percent)		8.50%
Decrease in uncertain tax positions		$ 23,176	$ 25,075	$ 3,863
Increase in unrecognized tax benefits		$ (20,600)
Amortization period	10 years			10 years
Expense (benefit) related to reversal of uncertain tax positions				$ 25,100
Effective income tax rates (as a percent)		14.00%
Hong Kong - Tax exempt dividends				5,100
Recognition of excess tax benefits				18,700
Valuation allowance		$ 36,922	36,537
Income taxes paid, net		86,353	67,484	50,855
Unrecognized tax benefits that would impact effective tax rate		131,400	152,000
Unrecognized tax benefits, uncertain tax positions		131,361	151,984	$ 210,215	$ 191,000
Interest and penalties in income tax expense		3,100	(600)
Accrued interest and penalties related to uncertain tax positions		8,300	7,200
Non-current income tax payable
Net operating loss and tax credit carryforwards
Unrecognized tax benefits, uncertain tax positions		86,300	$ 88,500
Swiss Federal Tax Administration (FTA)
Net operating loss and tax credit carryforwards
Foreign net operating loss carryforwards		$ 30,800
Minimum
Net operating loss and tax credit carryforwards
Effective income tax rates (as a percent)				13.61%
Maximum
Net operating loss and tax credit carryforwards
Effective income tax rates (as a percent)			14.28%
Swiss
Net operating loss and tax credit carryforwards
Statutory income tax rate (as a percent)		8.50%	8.50%	8.50%
Decrease in uncertain tax positions			$ 53,300
Increase in unrecognized tax benefits			10,000
Amortization period				10 years
Expense (benefit) related to reversal of uncertain tax positions				$ 50,100
State and Local Jurisdiction \| California Franchise Tax Board
Net operating loss and tax credit carryforwards
Valuation allowance		$ 36,800	$ 36,400
Foreign:
Net operating loss and tax credit carryforwards
Foreign net operating loss carryforwards		400
Foreign tax credit carryforwards		$ 61,100