Schedule of Weighted Average Assumptions to Determine Pension Obligations (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Discount rate	4.70%	5.00%	2.60%
Initial health care trend	7.70%	7.20%	7.30%
Ultimate health care trend	4.50%	4.50%	4.50%
Medical cost trend rate decrease to ultimate rate in year	2033	2032	2029
UNITED STATES
Defined Benefit Plan Disclosure
Discount rate	4.70%	4.90%
Salary progression rate	2.50%	2.50%
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Discount rate	3.00%	3.50%
Salary progression rate	2.40%	2.10%