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RETIREMENT BENEFITS - Additional Information (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) plan Investment | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |
Domestic pension plans, funded percentage | 115.00% | 116.00% |
Number of plans | plan | 3 |  |
Contributions | $ 3,761 | $ 4,785 | $ 5,292
Defined contribution plans contributions charged to expense | $ 15,200 | $ 14,400 | $ 12,000
Target allocation (in percentage) | 100.00% |  |
Plan assets held under management by single investment company | 99.00% |  |
Number of commingled debt and equity index funds | Investment | 6 |  |
Number of asset funds individually in excess of ten percent of total plan assets | Investment | 4 |  |
Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Multi employer funded status | 65.00% | 65.00% |
Foreign Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated benefit obligations in excess of plan assets, projected benefit obligation | $ 140,800 | $ 109,000 |
Accumulated benefit obligations in excess of plan assets, accumulated benefit obligation | $ 134,900 | $ 103,900 |
Benefit obligation discount rate (in percentage) | 1.10% | 1.50% |
Rate of compensation increase (in percentage) | 3.20% | 3.30% |
Net periodic benefit cost discount rate | 1.50% | 2.20% | 2.10%
Net periodic benefit cost rate of compensation increase | 3.30% | 3.30% | 3.30%
Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated benefit obligation, pension benefit plans | $ 942,600 | $ 828,000 |
Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation (in percentage) | 58.00% |  |
Debt securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation (in percentage) | 42.00% |  |
Equity securities—U.S. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation (in percentage) | 49.00% |  |
Equity securities, target allocation as percentage of total equity securities | 85.00% |  |

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