Other Comprehensive Income or Loss - Changes in the AOCI Balance (Details) - USD ($) $ in Millions	4 Months Ended
	Jun. 16, 2018	Jun. 17, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,398.2
Other comprehensive income (loss) before reclassifications	7.3	$ 29.0
Amounts reclassified from accumulated other comprehensive income	0.9	14.3
Tax (expense) benefit	(2.3)	(15.4)
Other comprehensive income	5.9	27.9
Ending balance	1,391.3
Total AOCI
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	191.1	(12.8)
Ending balance	197.0	15.1
Interest rate swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	18.9	(28.1)
Other comprehensive income (loss) before reclassifications	8.7	(11.9)
Amounts reclassified from accumulated other comprehensive income	2.5	13.2
Tax (expense) benefit	(3.0)	0.3
Other comprehensive income	8.2	1.6
Ending balance	27.1	(26.5)
Pension and Post-retirement benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	171.9	79.7
Other comprehensive income (loss) before reclassifications	0.0	2.2
Amounts reclassified from accumulated other comprehensive income	(0.9)	1.1
Tax (expense) benefit	0.3	(0.5)
Other comprehensive income	(0.6)	2.8
Ending balance	171.3	82.5
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1.1)	(66.1)
Other comprehensive income (loss) before reclassifications	(0.7)	38.3
Amounts reclassified from accumulated other comprehensive income	0.0	0.0
Tax (expense) benefit	0.1	(15.2)
Other comprehensive income	(0.6)	23.1
Ending balance	(1.7)	(43.0)
Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	1.4	1.7
Other comprehensive income (loss) before reclassifications	(0.7)	0.4
Amounts reclassified from accumulated other comprehensive income	(0.7)	0.0
Tax (expense) benefit	0.3	0.0
Other comprehensive income	(1.1)	0.4
Ending balance	$ 0.3	$ 2.1