Pension And Other Postretirement Benefits Liabilities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected additional pension and other postretirement benefit contributions	$ 8.7
Unfunded Defined Benefit Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected additional pension and other postretirement benefit contributions	3.2
Matching Contributions To 401(k) Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected additional pension and other postretirement benefit contributions	2.9
Non U.S. Defined Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected additional pension and other postretirement benefit contributions	2.6
U.S. Defined Benefit Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected additional pension and other postretirement benefit contributions	$ 0