Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Income Tax Contingency [Line Items]
Income taxes paid	$ 64,210	$ 38,482	$ 41,800
United States federal net operating loss carryforwards	3,213
Limited by Internal Revenue Code	3,213
Operating loss carryforwards, expiration date	2023
Net operating loss carryforwards foreign subsidiaries	235,623
Operating loss carryforwards, life period, years	20 years
Net operating loss carryforwards for state tax purposes	35,751
Net operating loss carryforwards, state expiration period, years	20 years
Valuation allowance	793
Tax benefits due to the utilization of net operating loss carryforwards	1,866	2,940
Effective income tax rates	28.40%	24.70%	25.10%
Undistributed earnings of foreign subsidiaries	598,500
Balance of unrecognized tax benefits recognized, period	12 months
Tax related interest and penalties	680	575
Foreign
Income Tax Contingency [Line Items]
Valuation allowance associated with certain foreign and state tax jurisdictions	52,781	53,206
State
Income Tax Contingency [Line Items]
Valuation allowance associated with certain foreign and state tax jurisdictions	$ 1,761	$ 2,360