OTHER COMPREHENSIVE INCOME OR LOSS (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 24, 2024	Feb. 25, 2023	Feb. 26, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,610.7	$ 3,024.6	$ 1,324.3
Other comprehensive income before reclassifications	31.2	0.2
Amounts reclassified from Accumulated other comprehensive income	(5.9)	(0.5)
Tax expense	(6.6)	0.6
Other comprehensive income	18.7	0.3	5.5
Ending balance	2,747.5	1,610.7	3,024.6
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	69.3	69.0	63.5
Ending balance	88.0	69.3	69.0
Pension and Post-retirement benefit plan items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	71.7	67.1
Other comprehensive income before reclassifications	27.3	6.0
Amounts reclassified from Accumulated other comprehensive income	(5.9)	(0.5)
Tax expense	(5.6)	(0.9)
Other comprehensive income	15.8	4.6
Ending balance	87.5	71.7	67.1
Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2.4)	1.9
Other comprehensive income before reclassifications	3.9	(5.8)
Amounts reclassified from Accumulated other comprehensive income	0.0	0.0
Tax expense	(1.0)	1.5
Other comprehensive income	2.9	(4.3)
Ending balance	$ 0.5	$ (2.4)	$ 1.9