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Supplemental Disclosures of Cash Flow Information - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |
AMT credit and other U.S. federal refunds |  |  | $ (28.5)
Tax-payment deferrals |  |  | 20.0
Tax returns |  |  | 106.0
Net operating losses in U.K. additional cash tax payments |  | $ 49.0 | $ 28.4
Qualified Contributory Savings and Thrift 401(k) Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Matching contributions by employer, percentage | 100.00% |  |
Percentage of eligible compensation for matching contributions by employer | 5.00% | 5.00% | 5.00%
Matching contributions vesting schedule | 5 years |  |
Contribution expense to plan | $ 86.0 | $ 73.8 | $ 65.7
Employer match on eligible compensation | 5.00% | 5.00% |

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