SUPPLEMENTAL CASH FLOW INFORMATION Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended	5 Months Ended	12 Months Ended
	Dec. 29, 2013	Dec. 28, 2014	Sep. 26, 2013	Apr. 28, 2013	Apr. 29, 2012
Successor
Supplemental disclosures of cash flow information:
Interest paid	$ (10.9)	$ (182.1)
Income taxes (paid) refunded, net	(0.1)	(178.8)
Predecessor
Supplemental disclosures of cash flow information:
Interest paid			(76.4)	(147.9)	(149.6)
Income taxes (paid) refunded, net			$ 43.8	$ (3.7)	$ (225.7)