OTHER COMPREHENSIVE INCOME OR LOSS - Changes in the AOCI Balance (Details) - USD ($) $ in Millions	4 Months Ended
	Jun. 15, 2019	Jun. 16, 2018	Feb. 24, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,450.7	$ 1,398.2
Cumulative effect of accounting change			$ 574.6
Other comprehensive (loss) income before reclassifications	(23.9)	7.3
Amounts reclassified from accumulated other comprehensive income	(1.2)	0.9
Tax (expense) benefit	6.6	(2.3)
Other comprehensive (loss) income	(1.9)	5.9
Ending balance	2,054.4	1,391.3
Accumulated other comprehensive income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	91.3	191.1
Cumulative effect of accounting change			16.6
Other comprehensive (loss) income		5.9
Ending balance	89.4	197.0
Interest rate swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	3.4	18.9
Other comprehensive (loss) income before reclassifications	(35.7)	8.7
Amounts reclassified from accumulated other comprehensive income	(2.5)	2.5
Tax (expense) benefit	10.0	(3.0)
Other comprehensive (loss) income	(27.0)	8.2
Ending balance	(23.6)	27.1
Pension and Post-retirement benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	88.8	171.9
Other comprehensive (loss) income before reclassifications	10.1	0.0
Amounts reclassified from accumulated other comprehensive income	1.3	(0.9)
Tax (expense) benefit	(2.9)	0.3
Other comprehensive (loss) income	23.4	(0.6)
Ending balance	112.2	171.3
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1.4)	(1.1)
Other comprehensive (loss) income before reclassifications	0.0	(0.7)
Amounts reclassified from accumulated other comprehensive income	0.0	0.0
Tax (expense) benefit	0.0	0.1
Other comprehensive (loss) income	0.0	(0.6)
Ending balance	(1.4)	(1.7)
Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0.5	1.4
Other comprehensive (loss) income before reclassifications	1.7	(0.7)
Amounts reclassified from accumulated other comprehensive income	0.0	(0.7)
Tax (expense) benefit	(0.5)	0.3
Other comprehensive (loss) income	1.7	(1.1)
Ending balance	$ 2.2	$ 0.3
ASU 2016-02
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of accounting change			16.6
ASU 2016-02 | Interest rate swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of accounting change			1.2
ASU 2016-02 | Pension and Post-retirement benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of accounting change			14.9
ASU 2016-02 | Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of accounting change			0.0
ASU 2016-02 | Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of accounting change			$ 0.5