Pension Plans - Weighted-Average Asset Allocations of Plan Assets (Detail) |
Dec. 31, 2022 |
Dec. 31, 2021 |
---|---|---|
Defined Benefit Plan Disclosure [Line Items] | ||
Weighted-average asset allocations of pension plan assets | 100.00% | 100.00% |
Equity Securities [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Weighted-average asset allocations of pension plan assets | 37.00% | 49.00% |
Debt Securities [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Weighted-average asset allocations of pension plan assets | 63.00% | 51.00% |