Pensions and Other Post-retirement Benefits - Schedule of Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Assumptions used to determine benefit obligations, average discount rate	5.01%	2.70%
Assumptions used to determine benefit obligations, rate of compensation increase	4.61%	4.58%
Assumptions used to determine net periodic benefit cost, average discount rate, service cost	3.12%	2.80%
Assumptions used to determine net periodic benefit cost, average discount rate, interest cost	2.17%	1.69%
Assumptions used to determine net periodic benefit cost, expected return on plan assets	8.77%	7.13%
Assumptions used to determine net periodic benefit cost, rate of compensation increase	4.58%	2.90%
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Assumptions used to determine benefit obligations, average discount rate	5.09%	2.66%
Assumptions used to determine benefit obligations, rate of compensation increase	3.00%	2.91%
Assumptions used to determine net periodic benefit cost, average discount rate, service cost	2.84%	2.42%
Assumptions used to determine net periodic benefit cost, average discount rate, interest cost	2.04%	1.48%
Assumptions used to determine net periodic benefit cost, expected return on plan assets	0.00%	0.00%
Assumptions used to determine net periodic benefit cost, rate of compensation increase	2.91%	3.00%