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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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NEW ACCOUNTING PRONOUNCEMENTS - Cumulative Effect on Balance Sheet (Details) - USD ($) $ in Millions	Mar. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets	$ 685.4	$ 685.4	$ 657.7
Accrued expenses	176.5	191.6	183.7
Other long-term liabilities	828.2	837.1	817.3
Retained deficit	$ (650.9)		$ (650.1)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets		27.7
Accrued expenses		7.9
Other long-term liabilities		$ 19.8
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained deficit				$ 4.0
Accounting Standards Update 2016-16
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained deficit				(0.2)
Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained deficit				$ (4.8)