Note 15 - Related Parties - Schedule of Related Party Transactions (Details) - NFI [Member] - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 27, 2026 |
Jun. 28, 2025 |
Jun. 27, 2026 |
Jun. 28, 2025 |
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| Related party transaction, amount | $ 19.4 | $ 20.3 | $ 50.8 | $ 54.6 | ||||||||
| Transportation Management [Member] | ||||||||||||
| Related party transaction, amount | [1] | 0.2 | 0.2 | 0.6 | 0.6 | |||||||
| Labor Management Services [Member] | ||||||||||||
| Related party transaction, amount | [2] | 3.9 | 4.5 | 11.5 | 12.3 | |||||||
| Lease Payments [Member] | ||||||||||||
| Related party transaction, amount | [3] | 0.4 | 0.5 | 1.4 | 1.4 | |||||||
| Pass Through Payments [Member] | ||||||||||||
| Related party transaction, amount | [4] | $ 14.9 | $ 15.1 | $ 37.3 | $ 40.3 | |||||||
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