BENEFIT PLANS - Weighted-Average Actuarial Assumptions (Detail)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Postretirement Benefit Plans, Defined Benefit
Weighted-average actuarial assumptions:
Discount rate - net periodic benefit cost		3.25%	4.25%	3.75%
Discount rate - benefit obligations		2.68%	3.25%	4.25%
Health care cost trend rates	[1]	6.30%	7.50%	7.40%
Defined benefit plan, ultimate health care cost trend rate		3.70%	3.80%	4.10%
Defined benefit plan number of years that rate reaches ultimate trend rate		53 years	54 years	61 years
Japan | Pension Plan
Weighted-average actuarial assumptions:
Discount rate - net periodic benefit cost		0.75%	1.25%	1.25%
Discount rate - benefit obligations		0.75%	0.75%	1.25%
Expected long-term return on plan assets		2.00%	2.00%	2.00%
U.S. | Pension Plan
Weighted-average actuarial assumptions:
Discount rate - net periodic benefit cost		3.25%	4.25%	3.75%
Discount rate - benefit obligations		2.68%	3.25%	4.25%
Expected long-term return on plan assets		6.00%	6.25%	6.50%
Rate of compensation increase		4.00%	4.00%	4.00%

[1] For the years 2020, 2019 and 2018, the health care cost trend rates are expected to trend down to 3.7% in 53 years, 3.8% in 54 years, and 4.1% in 61 years, respectively.