RETIREMENT PLANS - Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension | U.S. Pension.
Defined Benefit Plan Disclosure
Total	$ 1,668.5	$ 2,376.8	$ 2,372.9
Pension | International Pension
Defined Benefit Plan Disclosure
Total investments at fair value	859.8	1,153.9
Investments measured at NAV	45.3	66.0
Total	905.1	1,219.9	$ 1,148.0
Pension | International Pension | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	9.9	24.1
Total	9.9	24.1
Pension | International Pension | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	849.9	1,129.8
Total	849.9	1,129.8
Pension | International Pension | Level 3
Defined Benefit Plan Disclosure
Total	0.0	0.0
Pension | International Pension | Cash
Defined Benefit Plan Disclosure
Total investments at fair value	9.9	7.2
Pension | International Pension | Cash | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	9.9	7.2
Pension | International Pension | International equity
Defined Benefit Plan Disclosure
Total investments at fair value	219.3	490.1
Pension | International Pension | International equity | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	219.3	490.1
Pension | International Pension | Corporate bonds
Defined Benefit Plan Disclosure
Total investments at fair value	158.5	229.7
Pension | International Pension | Corporate bonds | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value		9.7
Pension | International Pension | Corporate bonds | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	158.5	220.0
Pension | International Pension | Government bonds
Defined Benefit Plan Disclosure
Total investments at fair value	365.9	305.7
Pension | International Pension | Government bonds | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value		7.2
Pension | International Pension | Government bonds | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	365.9	298.5
Pension | International Pension | Insurance contracts
Defined Benefit Plan Disclosure
Total investments at fair value	106.2	121.2
Pension | International Pension | Insurance contracts | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	106.2	121.2
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension.
Defined Benefit Plan Disclosure
Total investments at fair value	1,237.8	1,794.7
Total	1,671.7	2,382.0
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	523.6	1,099.7
Total	523.6	1,099.7
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	714.2	695.0
Total	714.2	695.0
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Level 3
Defined Benefit Plan Disclosure
Total	0.0	0.0
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Cash
Defined Benefit Plan Disclosure
Total investments at fair value	54.8	43.6
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Cash | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	54.8	43.6
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Large cap equity
Defined Benefit Plan Disclosure
Total investments at fair value	237.1	412.2
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Large cap equity | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	237.1	412.2
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Small cap equity
Defined Benefit Plan Disclosure
Total investments at fair value	40.5	62.0
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Small cap equity | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	15.4	21.3
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Small cap equity | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	25.1	40.7
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | International equity
Defined Benefit Plan Disclosure
Total investments at fair value	54.6	90.9
Investments measured at NAV	433.9	587.3
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | International equity | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	37.4	62.9
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | International equity | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	17.2	28.0
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Core fixed income
Defined Benefit Plan Disclosure
Total investments at fair value	792.0	1,100.4
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Core fixed income | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	145.5	510.7
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Core fixed income | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	646.5	589.7
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | High-yield bonds
Defined Benefit Plan Disclosure
Total investments at fair value	33.4	49.0
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | High-yield bonds | Level 1
Defined Benefit Plan Disclosure
Total investments at fair value	33.4	49.0
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Emerging markets
Defined Benefit Plan Disclosure
Total investments at fair value	25.4	36.6
U.S. Pension and Postretirement Health Care Benefits | U.S. Pension. | Emerging markets | Level 2
Defined Benefit Plan Disclosure
Total investments at fair value	$ 25.4	$ 36.6