BENEFIT PLANS - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012 Y
Lower Limit
Employee Benefits Disclosure [Line Items]
Health care plan, retirement age for eligibility, (in years)	55
Health care plan, number of years of service for eligibility	15 years
Health care plan, retirement age and years of service combined years for eligibility	80 years
Upper Limit
Employee Benefits Disclosure [Line Items]
Health care plan, retirement age for eligibility, (in years)	65
Japanese Pension Plan
Employee Benefits Disclosure [Line Items]
Employer contributions	12