| Schedule of fair value hierarchy levels of the Plan's assets |
The following tables set forth the fair value hierarchy levels of the Plan’s assets at fair value at December 31, (dollars in thousands): | | | | | | | | | | | | | | | Basis of Fair Value Measurement | | | 2025 | | Level 1 | | Level 2 | | Level 3 | | Total | Interest bearing cash | | $ | 25 | | $ | — | | $ | — | | $ | 25 | Common stock | | | 3,047,016 | | | — | | | — | | | 3,047,016 | Mutual funds | | | 5,288 | | | — | | | — | | | 5,288 | Collective trust funds | | | 12,461,950 | | | — | | | — | | | 12,461,950 | Self-directed brokerage accounts | | | 204,031 | | | — | | | — | | | 204,031 | Total assets at fair value | | $ | 15,718,310 | | $ | — | | $ | — | | $ | 15,718,310 |
| | | | | | | | | | | | | | | Basis of Fair Value Measurement | | | 2024 | | Level 1 | | Level 2 | | Level 3 | | Total | Interest bearing cash | | $ | 93 | | $ | — | | $ | — | | $ | 93 | Common stock | | | 2,583,223 | | | — | | | — | | | 2,583,223 | Mutual funds | | | 3,255 | | | — | | | — | | | 3,255 | Collective trust funds | | | 10,447,456 | | | — | | | — | | | 10,447,456 | Self-directed brokerage accounts | | | 149,210 | | | — | | | — | | | 149,210 | Total assets at fair value | | $ | 13,183,237 | | $ | — | | $ | — | | $ | 13,183,237 |
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| Schedule of fair value hierarchy levels of the Plan's assets |
The following tables set forth the fair value hierarchy levels of the Plan’s assets at fair value at December 31, (dollars in thousands): | | | | | | | | | | | | | | | Basis of Fair Value Measurement | | | | 2025 | | Level 1 | | Level 2 | | Level 3 | | Total | Common stock | | $ | 329,280 | | | — | | | — | | $ | 329,280 | Mutual funds | | | 8,595 | | | — | | | — | | | 8,595 | Collective trust funds | | | 325,555 | | | — | | | — | | | 325,555 | Self-directed brokerage accounts | | | 1,850 | | | — | | | — | | | 1,850 | Total assets at fair value | | $ | 665,280 | | $ | — | | $ | — | | $ | 665,280 |
| | | | | | | | | | | | | | | Basis of Fair Value Measurement | | | | 2024 | | Level 1 | | Level 2 | | Level 3 | | Total | Common stock | | $ | 276,713 | | | — | | | — | | $ | 276,713 | Mutual funds | | | 41,065 | | | — | | | — | | | 41,065 | Collective trust funds | | | 233,155 | | | — | | | — | | | 233,155 | Self-directed brokerage accounts | | | 1,571 | | | — | | | — | | | 1,571 | Total assets at fair value | | $ | 552,504 | | $ | — | | $ | — | | $ | 552,504 |
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