INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Feb. 26, 2022	Feb. 27, 2021	Feb. 29, 2020	Feb. 23, 2019
Deferred tax assets:
Compensation and benefits	$ 229.5	$ 275.0
Net operating loss	107.0	118.4
Pension & postretirement benefits	280.2	333.1
Self-Insurance	275.3	271.0
Tax credits	30.7	39.0
Lease obligations	1,740.7	1,785.7
Other	97.4	96.2
Gross deferred tax assets	2,760.8	2,918.4
Less: valuation allowance	(113.6)	(130.4)	$ (135.1)	$ (139.5)
Total deferred tax assets	2,647.2	2,788.0
Deferred tax liabilities:
Depreciation and amortization	1,348.3	1,233.7
Inventories	361.8	335.9
Operating lease assets	1,530.1	1,570.4
Other	206.8	181.7
Total deferred tax liabilities	3,447.0	3,321.7
Net deferred tax liability	(799.8)	(533.7)
Noncurrent deferred tax asset
Deferred tax liabilities:
Net deferred tax liability	0.0	0.0
Noncurrent deferred tax liability
Deferred tax liabilities:
Net deferred tax liability	$ (799.8)	$ (533.7)