EMPLOYEE BENEFIT PLANS AND COLLECTIVE BARGAINING AGREEMENTS - Narrative (Details) $ in Millions				1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 13, 2025	Dec. 18, 2022 USD ($)	Aug. 08, 2022 USD ($)	Feb. 28, 2021 USD ($)	Feb. 26, 2022 USD ($)	Feb. 22, 2025 USD ($) employee plan	Feb. 24, 2024 USD ($)	Feb. 25, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employer contributions						$ 91.3	$ 18.3	$ 27.3
Expected employer contribution next fiscal year						$ 57.0
Number of multiemployer plans | plan						27
Employer discretionary contribution amount in 401(k)						$ 83.5	83.0	89.3
Non-cash pre-tax charge					$ 607.2
Non-cash charge, net of tax					449.4
Additional funding			$ 120.0
Number of company employees | employee						285,000
Number of participants in collective bargaining agreements | employee						195,000
Number of participants renegotiated | employee						17,500
Number of employee scheduled to expire in collective bargaining agreements | employee						120,000
Accrued retention bonus						$ 33.6	35.0
Merger Agreement
Defined Benefit Plan Disclosure [Line Items]
Aggregate retention program amount		$ 100.0
Merger Agreement | Last day on year granted
Defined Benefit Plan Disclosure [Line Items]
Business combination termination, award vesting rights, percentage		50.00%
Merger Agreement | Next twelve months | Forecast
Defined Benefit Plan Disclosure [Line Items]
Business combination termination, award vesting rights, percentage	50.00%
Pension
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets						1,483.2	1,443.7	1,407.3
Payable to intermediary agent							47.8
Employer contributions						89.8	16.4
Pension obligation						1,641.4	1,691.5	1,697.5
Contributions by company						547.7	545.5	546.5
Pension | Safeway Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets						1,220.5
Pension | Shaw's Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets						223.3
Pension | Safeway VAPP
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets						32.2
Other Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets						7.2
Other Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets						0.0	0.0	0.0
Employer contributions						1.5	1.9
Non-cash pre-tax charge								19.0
Pension obligation						12.1	12.0	12.4
Multiemployer Health and Welfare Plans
Defined Benefit Plan Disclosure [Line Items]
Contributions by company						$ 1,300.0	$ 1,300.0	$ 1,300.0
Combined Plan
Defined Benefit Plan Disclosure [Line Items]
Required annual contribution				$ 23.2
Defined contribution plan, term (in years)				25 years
MAP and FELRA
Defined Benefit Plan Disclosure [Line Items]
Required annual contribution					1,200.0
Defined contribution plan, term (in years)						10 years
MAP and FELRA | Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, term (in years)						25 years
MAP and FELRA | Maximum
Defined Benefit Plan Disclosure [Line Items]
Employer discretionary contribution amount in 401(k)						$ 13.7
MAP and FELRA | Other Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Non-cash pre-tax charge					106.3
Non-cash charge, net of tax					78.7
Pension obligation					$ 19.0