REVENUES FROM CONTRACTS - Contract Balances (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 27, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Contract Accounts Receivable	$ 231.4	$ 260.8
Increase (decrease) in accounts receivable	(29.4)
Contract assets	65.5	63.4
Increase (decrease) in contract with customer, asset, net, current	2.1
Contract Liabilities - current	(91.1)	(100.8)
Increase (decrease) in contract with customer, liability, current	9.7
Contract Liabilities - non-current	(3.0)	(3.3)
Increase (decrease) in contract with customer, liability, noncurrent	0.3
Net contract balance	202.8	$ 220.1
Increase (decrease) in contract with customers, net	$ (17.3)