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Deferred Compensation - Additional Information (Detail) - USD ($) shares in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Investments And Employee Deferred Compensation Plan [Line Items] |  |  |
Deferred Equity Participation Plan, distributions to key executives, age | age 62 (or the one-year anniversary of the date of the grant for participants over the age of 61 as of the grant date) or upon or after their actual retirement if later. |  |
Deferred Equity Participation Sub-plans, distributions requisite service description | we annually make awards under sub-plans of the DEPP for certain production staff, which generally provide for vesting and/or distributions no sooner than five years from the date of awards, although certain awards vest and/or distribute after the earlier of fifteen years or the participant reaching age 65. |  |
Deferred Equity Participation Sub-plans, distributions to key executives, age | age 65 |  |
Deferred Equity Participation Plan (DEPP) [Member] |  |  |
Investments And Employee Deferred Compensation Plan [Line Items] |  |  |
Awards approved by committee, value | $ 22,200,000 | $ 23,200,000 |
Charge to compensation expenses related to awards | 3,500,000 | 4,000,000 |
Unearned deferred compensation, value | $ 97,300,000 |  | $ 77,000,000
Unearned deferred compensation, shares | 2.1 |  | 2.2
Total intrinsic value of unvested equity based awards | $ 719,000,000 |  | $ 616,400,000
Cash and equity awards with aggregate fair value vested and distributed to participants | 10,900,000 | 7,900,000 |
Deferred Equity Participation Plan Sub Plans [Member] |  |  |
Investments And Employee Deferred Compensation Plan [Line Items] |  |  |
Awards approved by committee, value | 2,300,000 | 2,300,000 |
Charge to compensation expenses related to awards | 500,000 | 500,000 |
Distributions from the sub-plans | 0 | 0 |
Deferred Cash Participation Plan (DCPP) [Member] |  |  |
Investments And Employee Deferred Compensation Plan [Line Items] |  |  |
Awards approved by committee, value | 7,800,000 | 8,100,000 |
Charge to compensation expenses related to awards | 4,700,000 | 4,800,000 |
Cash and equity awards with aggregate fair value vested and distributed to participants | $ 0 | $ 0 |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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