RETIREMENT PLANS AND OTHER BENEFITS - Schedule of Fair Value of Plan Assets (Details) - Pension Plan - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	$ 0.0	$ 118.5	$ 117.1
U.S. Plan | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	2.5
U.S. Plan | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	116.0
U.S. Plan | Cash, including money market funds
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	2.5
U.S. Plan | Cash, including money market funds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	2.5
U.S. Plan | Cash, including money market funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Cash, including money market funds | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	27.6
U.S. Plan | U.S. equities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | U.S. equities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | U.S. equities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	27.6
U.S. Plan | Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	8.7
U.S. Plan | Non-U.S. equities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Non-U.S. equities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Non-U.S. equities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	8.7
U.S. Plan | U.S. corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		55.8
U.S. Plan | U.S. corporate bonds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
U.S. Plan | U.S. corporate bonds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
U.S. Plan | U.S. corporate bonds | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		55.8
U.S. Plan | Non-U.S. corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Non-U.S. corporate bonds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Non-U.S. corporate bonds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Non-U.S. corporate bonds | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | U.S. government securities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		16.4
U.S. Plan | U.S. government securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
U.S. Plan | U.S. government securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
U.S. Plan | U.S. government securities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		16.4
U.S. Plan | Non-U.S. government securities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.6
U.S. Plan | Non-U.S. government securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
U.S. Plan | Non-U.S. government securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
U.S. Plan | Non-U.S. government securities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.6
U.S. Plan | Non-U.S. governmental fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Non-U.S. governmental fixed income funds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Non-U.S. governmental fixed income funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Non-U.S. governmental fixed income funds | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Real estate
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Real estate | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Real estate | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Real estate | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Other securities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	6.9
U.S. Plan | Other securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Other securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
U.S. Plan | Other securities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	6.9
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	107.5	121.2	$ 108.3
Non-U.S. Plans | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.7	2.9
Non-U.S. Plans | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	106.8	118.3
Non-U.S. Plans | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Cash, including money market funds
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.7	2.9
Non-U.S. Plans | Cash, including money market funds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.7	2.9
Non-U.S. Plans | Cash, including money market funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Cash, including money market funds | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	11.1	6.4
Non-U.S. Plans | U.S. equities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | U.S. equities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	11.1	6.4
Non-U.S. Plans | U.S. equities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Non-U.S. equities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	10.7	24.4
Non-U.S. Plans | Non-U.S. equities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Non-U.S. equities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	10.7	24.4
Non-U.S. Plans | Non-U.S. equities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | U.S. corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.6
Non-U.S. Plans | U.S. corporate bonds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
Non-U.S. Plans | U.S. corporate bonds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.6
Non-U.S. Plans | U.S. corporate bonds | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
Non-U.S. Plans | Non-U.S. corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	2.5	19.3
Non-U.S. Plans | Non-U.S. corporate bonds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Non-U.S. corporate bonds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	2.5	19.3
Non-U.S. Plans | Non-U.S. corporate bonds | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | U.S. government securities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
Non-U.S. Plans | U.S. government securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
Non-U.S. Plans | U.S. government securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
Non-U.S. Plans | U.S. government securities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
Non-U.S. Plans | Non-U.S. government securities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		32.7
Non-U.S. Plans | Non-U.S. government securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
Non-U.S. Plans | Non-U.S. government securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		32.7
Non-U.S. Plans | Non-U.S. government securities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value		0.0
Non-U.S. Plans | Non-U.S. governmental fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	59.7	26.0
Non-U.S. Plans | Non-U.S. governmental fixed income funds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Non-U.S. governmental fixed income funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	59.7	26.0
Non-U.S. Plans | Non-U.S. governmental fixed income funds | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Real estate
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	3.7	3.5
Non-U.S. Plans | Real estate | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Real estate | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	3.7	3.5
Non-U.S. Plans | Real estate | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Other securities
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	19.1	5.4
Non-U.S. Plans | Other securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	0.0	0.0
Non-U.S. Plans | Other securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	19.1	5.4
Non-U.S. Plans | Other securities | NAV
Defined Benefit Plan Disclosure [Line Items]
Total investments measured at fair value	$ 0.0	$ 0.0