| Schedule of plan's investment assets at fair value |
| | | | | | | | | | | | | | | Fair Value Measurements | | | At December 31, 2025 | | | Quoted Prices in | | Significant | | | | | | | | | Active Markets | | Other | | Significant | | | | | | For Identical | | Observable | | Unobservable | | | | | | Assets (Level 1) | | Inputs (Level 2) | | Inputs (Level 3) | | Total | Company common stock (1) | | $ | 2,742,549,187 | | $ | — | | $ | — | | $ | 2,742,549,187 | Mutual funds | | | 289,167,714 | | | — | | | — | | | 289,167,714 | Total assets in the fair value hierarchy | | $ | 3,031,716,901 | | | — | | | — | | | 3,031,716,901 | Collective trust funds measured at net asset value (2) | | | | | | | | | | | | 572,162,790 | Investments at fair value | | | | | | | | | | | $ | 3,603,879,691 |
| | | | | | | | | | | | | | | Fair Value Measurements | | | At December 31, 2024 | | | Quoted Prices in | | Significant | | | | | | | | | Active Markets | | Other | | Significant | | | | | | For Identical | | Observable | | Unobservable | | | | | | Assets (Level 1) | | Inputs (Level 2) | | Inputs (Level 3) | | Total | Company common stock (1) | | $ | 2,093,312,977 | | $ | — | | $ | — | | $ | 2,093,312,977 | Mutual funds | | | 250,803,377 | | | — | | | — | | | 250,803,377 | Total assets in the fair value hierarchy | | $ | 2,344,116,354 | | | — | | | — | | | 2,344,116,354 | Collective trust funds measured at net asset value (2) | | | | | | | | | | | | 525,484,091 | Investments at fair value | | | | | | | | | | | $ | 2,869,600,445 |
(1)The quoted market price of Company common stock on December 31, 2025 was $606.34 per share and on December 31, 2024 was $431.74 per share. The quoted market price of Company common stock on the latest practical date of June 1, 2026 was $588.19 per share. (2)In accordance with Accounting Standards Codification, Fair Value Measurement (Subtopic 820-10), certain investments that were measured at net asset value per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in these tables are intended to permit reconciliation of the fair value hierarchy to the line items presented in the statement of net assets available for benefits.
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