BASIS OF PRESENTATION BASIS OF PRESENTATION (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 27, 2020	Dec. 28, 2019	Mar. 28, 2020	Dec. 29, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for doubtful accounts receivable	$ 13.3	$ 9.7
Stockholders' equity, including portion attributable to noncontrolling interest	$ 2,347.0	$ 2,380.4	$ 2,300.1		$ 2,430.4	$ 2,444.0	$ 2,338.5
Accounting standards update	us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201613Member
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity, including portion attributable to noncontrolling interest	$ 1,919.7	$ 1,886.7	$ 1,903.8		$ 1,882.7	$ 1,851.8	$ 1,777.9
Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for doubtful accounts receivable				$ 3.4
Stockholders' equity, including portion attributable to noncontrolling interest		$ (2.7)
Adjustment | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity, including portion attributable to noncontrolling interest				$ (2.7)