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Retirement Benefits
 12 Months Ended
Dec. 28, 2024
Retirement Benefits [Abstract]  
Retirement Benefits Retirement Benefits
The Corporation has defined contribution retirement plans covering substantially all members. The Corporation’s contribution to the plans is based on member eligible earnings and/or member contributions. A portion of the contribution is also based on results
of operations, and a portion is contributed in the form of common stock of the Corporation. Cash contributions by the Corporation are primarily made each payroll period, concurrent with member contributions. Stock contributions to member retirement plans are typically made in the following year.

The following table includes the Corporation’s contributions related to the respective annual period:
202420232022
Stock contribution$3.9 $3.9 $5.1 
Cash contribution27.0 25.9 25.1 
Total annual contribution$30.9 $29.8 $30.1