v3.24.1
Note 13 - Pension and Postretirement Benefits (Tables)
9 Months Ended
Feb. 25, 2024
Notes Tables  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
  

Pension Plans

 
  

Thirteen Weeks Ended

  

Thirty-Nine Weeks Ended

 
  

February 25, 2024

  

February 26, 2023

  

February 25, 2024

  

February 26, 2023

 

Service cost

 $1.5  $1.6  $4.4  $4.9 

Interest cost

  36.1   31.0   109.5   93.0 

Expected return on plan assets

  (35.3)  (36.5)  (106.9)  (109.4)

Amortization of prior service cost

  0.4   0.4   1.2   1.1 

Settlement loss

  1.1   —   1.1   — 

Pension cost (benefit) — Company plans

  3.8   (3.5)  9.3   (10.4)

Pension cost (benefit) — multi-employer plans

  2.1   2.0   6.9   7.0 

Total pension cost (benefit)

 $5.9  $(1.5) $16.2  $(3.4)
  

Postretirement Plans

 
  

Thirteen Weeks Ended

  

Thirty-Nine Weeks Ended

 
  

February 25, 2024

  

February 26, 2023

  

February 25, 2024

  

February 26, 2023

 

Service cost

 $—  $—  $0.1  $0.1 

Interest cost

  0.7   0.6   2.0   1.7 

Amortization of prior service cost (benefit)

  (0.4)  (0.4)  (1.2)  (1.3)

Recognized net actuarial gain

  (1.2)  (1.1)  (3.6)  (3.3)

Total postretirement cost (benefit)

 $(0.9) $(0.9) $(2.7) $(2.8)