BENEFIT PLANS - Weighted-Average Actuarial Assumptions (Detail)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Japanese Pension Plan
Weighted-average actuarial assumptions:
Discount rate - net periodic benefit cost	2.25%		2.25%		2.50%
Discount rate - benefit obligations	2.25%		2.25%		2.25%
Expected long-term return on plan assets	2.50%		2.50%		2.50%
U.S. Pension Plan
Weighted-average actuarial assumptions:
Discount rate - net periodic benefit cost	4.75%		5.50%		5.75%
Discount rate - benefit obligations	4.25%		4.75%		5.50%
Expected long-term return on plan assets	7.50%		7.50%		7.50%
Rate of compensation increase	4.00%		4.00%		4.00%
Other Postretirement Benefit Plans, Defined Benefit
Weighted-average actuarial assumptions:
Discount rate - net periodic benefit cost	4.75%		5.50%		5.75%
Discount rate - benefit obligations	4.25%		4.75%		5.50%
Health care cost trend rates	5.70%	[1]	7.30%	[1]	7.50%	[1]
Defined benefit plan, ultimate health care cost trend rate	4.70%		4.20%		3.90%
Defined benefit plan number of years that rate reaches ultimate trend rate	79 years		75 years		75 years

[1] For the years 2012, 2011 and 2010, the health care cost trend rates are expected to trend down to 4.7% in 79 years, 4.2% in 75 years, and 3.9% in 75 years, respectively.