FAIR VALUE MEASUREMENTS Schedule of Fair Value, Pension Plan Assets (Details) (USD $) In Millions, unless otherwise specified	Dec. 29, 2013	Apr. 28, 2013	Dec. 28, 2014
Limited Partnerships | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	$ 37.8	$ 40.1
Insurance Contracts | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	1.1	1.2
Successor
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	1,116.0		1,206.6
Defined Benefit Plan, Fair Value of Plan Assets, Unsettled Transactions	6.8		8.1
Fair value of plan assets	1,122.8		1,214.7
Successor | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	378.8		453.9
Successor | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	698.3		715.4
Successor | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	38.9		37.3
Successor | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	53.2		95.0
Successor | Cash and Cash Equivalents | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	53.2		95.0
Successor | Cash and Cash Equivalents | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Cash and Cash Equivalents | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Health Care
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	28.2		30.7
Successor | Equity Securities, Health Care | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	28.2		30.7
Successor | Equity Securities, Health Care | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Health Care | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Financial
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	33.4		44.5
Successor | Equity Securities, Financial | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	33.4		44.5
Successor | Equity Securities, Financial | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Financial | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Consumer Staples
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	40.0		36.5
Successor | Equity Securities, Consumer Staples | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	40.0		36.5
Successor | Equity Securities, Consumer Staples | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Consumer Staples | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Energy
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	15.0		9.4
Successor | Equity Securities, Energy | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	15.0		9.4
Successor | Equity Securities, Energy | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Energy | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Information Technology
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	42.7		75.3
Successor | Equity Securities, Information Technology | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	42.7		75.3
Successor | Equity Securities, Information Technology | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Information Technology | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Industrials
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	20.5		26.0
Successor | Equity Securities, Industrials | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	20.5		26.0
Successor | Equity Securities, Industrials | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Industrials | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Telecommunication Service
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	6.5		4.7
Successor | Equity Securities, Telecommunication Service | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	6.5		4.7
Successor | Equity Securities, Telecommunication Service | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, Telecommunication Service | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, International
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	139.3		131.8
Successor | Equity Securities, International | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	139.3		131.8
Successor | Equity Securities, International | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Equity Securities, International | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Mutual Funds, International
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	95.9		75.0
Successor | Mutual Funds, International | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Mutual Funds, International | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	95.9		75.0
Successor | Mutual Funds, International | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Mutual Funds, Domestic Small Cap
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	34.2		25.5
Successor | Mutual Funds, Domestic Small Cap | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Mutual Funds, Domestic Small Cap | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	34.2		25.5
Successor | Mutual Funds, Domestic Small Cap | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	18.1		14.0
Successor | Fixed Income Funds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Fixed Income Funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	18.1		14.0
Successor | Fixed Income Funds | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Asset-backed Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	15.7		17.4
Successor | Asset-backed Securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Asset-backed Securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	15.7		17.4
Successor | Asset-backed Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Emerging Markets Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	23.5		22.6
Successor | Emerging Markets Securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Emerging Markets Securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	23.5		22.6
Successor | Emerging Markets Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Corporate Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	343.1		297.2
Successor | Corporate Debt Securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Corporate Debt Securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	343.1		297.2
Successor | Corporate Debt Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | US Treasury and Government
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	112.0		204.2
Successor | US Treasury and Government | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | US Treasury and Government | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	112.0		204.2
Successor | US Treasury and Government | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Limited Partnerships
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	37.8
Successor | Limited Partnerships | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Limited Partnerships | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Limited Partnerships | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	37.8		36.4
Successor | Diversified Investment Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	55.8		59.5
Successor | Diversified Investment Funds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Diversified Investment Funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	55.8		59.5
Successor | Diversified Investment Funds | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	1.1
Successor | Insurance Contracts | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Insurance Contracts | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	0		0
Successor | Insurance Contracts | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets, Excluding Unsettled Transactions	$ 1.1		$ 0.9