REVENUES FROM CONTRACTS - Contract Balances (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 28, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Contract Accounts Receivable	$ 241.8	$ 263.9
Increase (decrease) in accounts receivable	(22.1)
Contract assets	68.9	91.2
Increase (decrease) in contract with customer, asset, net, current	(22.3)
Contract Liabilities - current	(85.6)	(79.5)
Increase (decrease) in contract with customer, liability, current	(6.1)
Contract Liabilities - non-current	(2.4)	(2.1)
Increase (decrease) in contract with customer, liability, noncurrent	(0.3)
Net contract balance	222.7	$ 273.5
Increase (decrease) in contract with customers, net	$ (50.8)