EMPLOYEE BENEFIT PLANS AND COLLECTIVE BARGAINING AGREEMENTS - Schedule of Fair Value of Plan Assets (Details) - Pension - USD ($) $ in Millions	Feb. 25, 2023	Feb. 26, 2022
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,458.9	$ 1,730.0
Assets Measured at NAV	682.2	691.9
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	390.6	380.6
Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	386.1	657.5
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	20.4	12.0
Assets Measured at NAV	0.0	0.0
Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	16.7	12.0
Cash and cash equivalents | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.7	0.0
Cash and cash equivalents | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Short-term investment collective trust
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	36.9	72.5
Assets Measured at NAV	36.9	0.0
Short-term investment collective trust | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Short-term investment collective trust | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	72.5
Short-term investment collective trust | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Domestic common and preferred stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	153.5	160.3
Assets Measured at NAV	0.0	0.0
Domestic common and preferred stock | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	153.5	160.3
Domestic common and preferred stock | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Domestic common and preferred stock | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
International common stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58.3	58.2
Assets Measured at NAV	0.0	0.0
International common stock | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58.3	58.2
International common stock | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
International common stock | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Collective trust funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	601.0	648.1
Assets Measured at NAV	601.0	648.1
Collective trust funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Collective trust funds | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Collective trust funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Corporate bond
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	70.4	120.5
Assets Measured at NAV	0.0	0.0
Corporate bond | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Corporate bond | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	70.4	120.5
Corporate bond | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Mortgage and other asset-backed securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	35.6	32.7
Assets Measured at NAV	0.0	0.0
Mortgage and other asset-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Mortgage and other asset-backed securities | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	35.6	32.7
Mortgage and other asset-backed securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	204.9	240.8
Assets Measured at NAV	0.0	0.0
Mutual funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	161.9	150.1
Mutual funds | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	43.0	90.7
Mutual funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.S. government securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	209.2	319.4
Assets Measured at NAV	0.0	0.0
U.S. government securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.S. government securities | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	209.2	319.4
U.S. government securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Other securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	68.7	65.5
Assets Measured at NAV	44.3	43.8
Other securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	0.0
Other securities | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	24.2	21.7
Other securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0.0	$ 0.0