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NEW ACCOUNTING PRONOUNCEMENTS - Cumulative Effect on Balance Sheet (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Sep. 29, 2018	Jan. 01, 2018	Dec. 31, 2017
Assets
Accounts receivable, net			$ 256.2	$ 231.5	$ 267.5
Inventories, net			143.5	102.8	143.0
Contract assets			90.2	70.7	0.0
Other current assets			71.3	94.1	97.7
Deferred income taxes			32.9	50.0	50.9
Liabilities [Abstract]
Contract liabilities				86.9
Accrued expenses			186.4	193.6	292.6
Other long-term liabilities			835.7	884.2	885.8
Equity [Abstract]
Accumulated other comprehensive income			250.5	249.8	250.1
Retained deficit			701.3	738.3	742.3
Accounting Standards Update 2016-16
Equity [Abstract]
Retained deficit				0.2
Accounting Standards Update 2017-07
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net periodic defined benefits expense (reversal of expense), excluding service cost component	$ 1.5	$ (0.9)
Accounting Standards Update 2018-02
Equity [Abstract]
Retained deficit				4.8
Calculated under Revenue Guidance in Effect before Topic 606
Assets
Accounts receivable, net			290.4
Inventories, net			200.1
Contract assets			0.0
Other current assets			75.4
Deferred income taxes			34.8
Liabilities [Abstract]
Contract liabilities			0.0
Accrued expenses			272.3
Other long-term liabilities			837.2
Equity [Abstract]
Accumulated other comprehensive income			251.8
Retained deficit			708.1
Calculated under Revenue Guidance in Effect before Topic 606 | Accounting Standards Update 2014-09
Assets
Accounts receivable, net					267.5
Inventories, net					143.0
Contract assets					0.0
Other current assets					97.7
Deferred income taxes					50.9
Liabilities [Abstract]
Contract liabilities					0.0
Accrued expenses					292.6
Other long-term liabilities					885.8
Equity [Abstract]
Accumulated other comprehensive income					250.1
Retained deficit					742.3
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Assets
Accounts receivable, net			34.2		(36.0)
Inventories, net			56.6	$ 40.2	(40.2)
Contract assets			(90.2)		70.7
Other current assets			4.1		(3.6)
Deferred income taxes			1.9		(0.9)
Liabilities [Abstract]
Contract liabilities			(75.3)		86.9
Accrued expenses			85.9		(99.0)
Other long-term liabilities			1.5		(1.6)
Equity [Abstract]
Accumulated other comprehensive income			1.3		(0.3)
Retained deficit			$ 6.8		$ (4.0)

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