COMMITMENTS AND CONTINGENCIES AND OFF BALANCE SHEET ARRANGEMENTS (Details) $ in Millions					4 Months Ended	12 Months Ended
	Apr. 14, 2026 USD ($)	Jul. 02, 2025 lawsuit	Jul. 30, 2024 lawsuit	Sep. 06, 2022 lawsuit case	Jun. 20, 2026 USD ($) claim lawsuit case	Feb. 28, 2026 USD ($)	Aug. 19, 2025 USD ($)	Dec. 10, 2024 USD ($)	Aug. 09, 2023 count	Apr. 18, 2023 case	Feb. 25, 2023 USD ($)
Merger Agreement
Loss Contingencies [Line Items]
Termination fee								$ 600.0
Qui Tam Lawsuits | Pending Litigation
Loss Contingencies [Line Items]
Number of lawsuits filed against the company | lawsuit					2
Qui Tam Lawsuits | Pending Litigation | Minimum
Loss Contingencies [Line Items]
Loss contingency, amount of damages sought (in excess of)					$ 100.0
United States ex rel. Schutte and Yarberry v. SuperValu, New Albertson's, Inc., et al. | Pending Litigation
Loss Contingencies [Line Items]
Number of lawsuits filed against the company | case										2
Pharmacy Benefit Manager (PBM) Litigation | Pending Litigation
Loss Contingencies [Line Items]
Number of lawsuits filed against the company | count									17
Claims denied | count									16
Consolidated Cases for Multidistrict Litigation
Loss Contingencies [Line Items]
Number of lawsuits filed against the company | claim					3
Liability for settlements											$ 21.5
Consolidated Cases for Multidistrict Litigation | NEW MEXICO
Loss Contingencies [Line Items]
Claims settled | case				15
Consolidated Cases for Multidistrict Litigation | NEVADA
Loss Contingencies [Line Items]
Claims settled | case				3
Consolidated Cases for Multidistrict Litigation | New Mexico Counties
Loss Contingencies [Line Items]
Additional claims | lawsuit				14
Consolidated Cases for Multidistrict Litigation | Threatened Litigation
Loss Contingencies [Line Items]
Number of lawsuits filed against the company | case					2,000
Additional claims | lawsuit		108	150
Consolidated Cases for Multidistrict Litigation | Threatened Litigation | Blackfeet Tribe
Loss Contingencies [Line Items]
Number of new claims filed | lawsuit					81
Consolidated Cases for Multidistrict Litigation | Threatened Litigation | Tarrant County (Texas), Town of Hull (Massachusetts) and Monterey County (California)
Loss Contingencies [Line Items]
Number of lawsuits filed against the company | claim					2
Opioid Settlement Framework | Pending Litigation
Loss Contingencies [Line Items]
Payments for settlements					$ 136.6
Attorneys' fees and costs	$ 97.0					$ 773.8
Certain legal and regulatory accruals and settlements, net						599.8
Payment period one	9 years
Payment period two	2 years
Payment period three	7 years
Opioid Settlement Framework | Pending Litigation | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesCurrent
Loss Contingencies [Line Items]
Liability for settlements					273.1	136.6
Opioid Settlement Framework | Pending Litigation | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Loss Contingencies [Line Items]
Liability for settlements					$ 500.7	$ 637.2
Opioid Settlement Framework | Pending Litigation | American Tribes
Loss Contingencies [Line Items]
Payments for settlements	$ 21.7
Opioid Settlement Framework | Pending Litigation | Maximum | Participating States And Political Subdivisions
Loss Contingencies [Line Items]
Payments for settlements	$ 655.1
State Of Washington Litigation | Pending Litigation
Loss Contingencies [Line Items]
Attorneys' fees and costs							$ 28.4
Post-judgement interest accrual							12.00%