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EMPLOYEE BENEFIT PLANS
 6 Months Ended
Sep. 09, 2023
Retirement Benefits [Abstract]  
EMPLOYEE BENEFIT PLANS EMPLOYEE BENEFIT PLANS
Pension and Other Post-Retirement Benefits

The following table provides the components of net pension and post-retirement (income) expense (in millions):

12 weeks ended
PensionOther post-retirement benefits
September 9,
2023		September 10,
2022		September 9,
2023		September 10,
2022
Estimated return on plan assets$(22.7)$(21.4)$— $— 
Service cost4.0 4.5 — — 
Interest cost19.3 11.9 0.1 0.1 
Amortization of prior service cost0.1 0.1 — — 
Amortization of net actuarial (gain) loss(2.4)0.1 (0.2)(0.1)
(Income) expense, net$(1.7)$(4.8)$(0.1)$— 
28 weeks ended
PensionOther post-retirement benefits
September 9,
2023		September 10,
2022		September 9,
2023		September 10,
2022
Estimated return on plan assets$(53.0)$(50.0)$— $— 
Service cost9.3 10.7 — — 
Interest cost45.0 27.7 0.3 0.2 
Amortization of prior service cost0.2 0.2 — — 
Amortization of net actuarial (gain) loss(3.0)0.3 (0.5)(0.2)
(Income) expense, net$(1.5)$(11.1)$(0.2)$— 

The Company contributed $3.9 million and $10.4 million to its defined pension plans and post-retirement benefit plans during the 12 and 28 weeks ended September 9, 2023, respectively. For the 12 and 28 weeks ended September 10, 2022, the company contributed $1.8 million and $5.0 million, respectively. At the Company's discretion, additional funds may be contributed to the defined benefit pension plans that are determined to be beneficial to the Company. The Company currently anticipates contributing an additional $7.5 million to these plans for the remainder of fiscal 2023.

Multiemployer Pension Plans

ARP Act: The American Rescue Plan Act ("ARP Act"), which was signed into law on March 11, 2021, established a special financial assistance ("SFA") program for financially troubled multiemployer pension plans. During the 12 weeks ended September 10, 2022, the Pension Benefit Guaranty Corporation issued the final rule with respect to the SFA program which allowed for both additional funding and the investment of one third of the SFA funds into return-seeking investments. Based on the final rule, on August 8, 2022, the Combined Plan submitted a supplemented application for additional funding of approximately $120 million. The Combined Plan is expected to remain solvent and therefore the Company currently does not expect to have any funding requirements for the Excess Plan. As a result, during the 12 weeks ended September 10, 2022, the Company recorded a non-cash pre-tax gain of $19.0 million to remove the pension liability for the Excess Plan. For additional information, including a description and definition of the Combined Plan, as well as the impact on the Excess Plan, as defined therein, see "Part II—Item 8. Financial Statements and Supplementary Data—Note 12" of the Company's Annual Report on Form 10-K for the fiscal year ended February 25, 2023.