Fair Value of Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Mar. 31, 2012
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	$ 241	[1]	$ 812	[1]
Derivatives liabilities, Fair Value	3,738	[1]	4,753	[1]
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value			700
Derivatives liabilities, Fair Value	3,084		881
Designated as Hedging Instrument | Prepaid and other current assets | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value			670
Designated as Hedging Instrument | Other assets | Lead hedge forward contracts
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value			30
Designated as Hedging Instrument | Accrued expenses | Lead hedge forward contracts
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value	2,832		881
Designated as Hedging Instrument | Accrued expenses | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value	252
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	241		112
Derivatives liabilities, Fair Value	654		3,872
Not Designated as Hedging Instrument | Prepaid and other current assets | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Derivatives assets, Fair Value	241		112
Not Designated as Hedging Instrument | Accrued expenses | Interest rate swap agreements
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value	654		3,628
Not Designated as Hedging Instrument | Other liabilities | Interest rate swap agreements
Derivatives, Fair Value [Line Items]
Derivatives liabilities, Fair Value			$ 244

[1] Represents interest rate swap agreements, lead and foreign currency hedges (see Note 12 for asset and liability positions of the interest rate swap agreements, lead and foreign currency hedges at March 31, 2013 and March 31, 2012).