PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - Pension plan assets measured at fair value (Details) - Pensions - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total pension plan assets, percent	98.60%
U.S.
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	$ 377.3	$ 517.5	$ 483.7
U.S. | Fair value, measurements, recurring
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	377.3	517.4
U.S. | Fair value, measurements, recurring | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	36.9	43.4
U.S. | Fair value, measurements, recurring | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	67.0	102.1
U.S. | Fair value, measurements, recurring | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	2.1
U.S. | Fair value, measurements, recurring | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	28.4	37.9
U.S. | Fair value, measurements, recurring | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	108.8	138.8
U.S. | Fair value, measurements, recurring | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	136.2	192.5
U.S. | Fair value, measurements, recurring | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.6
U.S. | Fair value, measurements, recurring | Level 1
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	103.9	148.2
U.S. | Fair value, measurements, recurring | Level 1 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	36.9	43.4
U.S. | Fair value, measurements, recurring | Level 1 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	67.0	102.1
U.S. | Fair value, measurements, recurring | Level 1 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	2.1
U.S. | Fair value, measurements, recurring | Level 1 | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 1 | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 1 | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 1 | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.6
U.S. | Fair value, measurements, recurring | Level 2
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 2 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 2 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 2 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 2 | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 2 | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 2 | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 2 | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 3
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 3 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 3 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 3 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 3 | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 3 | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 3 | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Level 3 | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Net Asset Value
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	273.4	369.2
U.S. | Fair value, measurements, recurring | Net Asset Value | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Net Asset Value | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Net Asset Value | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
U.S. | Fair value, measurements, recurring | Net Asset Value | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	28.4	37.9
U.S. | Fair value, measurements, recurring | Net Asset Value | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	108.8	138.8
U.S. | Fair value, measurements, recurring | Net Asset Value | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	136.2	192.5
U.S. | Fair value, measurements, recurring | Net Asset Value | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	372.0	627.5	$ 591.5
International | Fair value, measurements, recurring
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	372.7	629.7
International | Fair value, measurements, recurring | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	49.4	40.5
International | Fair value, measurements, recurring | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	45.5
International | Fair value, measurements, recurring | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	9.1	143.4
International | Fair value, measurements, recurring | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	42.7	36.0
International | Fair value, measurements, recurring | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	221.1	291.0
International | Fair value, measurements, recurring | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	2.3	3.6
International | Fair value, measurements, recurring | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	48.1	69.7
International | Fair value, measurements, recurring | Level 1
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	106.6	299.1
International | Fair value, measurements, recurring | Level 1 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	49.4	40.5
International | Fair value, measurements, recurring | Level 1 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	45.5
International | Fair value, measurements, recurring | Level 1 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	9.1	143.4
International | Fair value, measurements, recurring | Level 1 | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 1 | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 1 | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 1 | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	48.1	69.7
International | Fair value, measurements, recurring | Level 2
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 2 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 2 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 2 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 2 | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 2 | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 2 | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 2 | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 3
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 3 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 3 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 3 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 3 | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 3 | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 3 | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Level 3 | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Net Asset Value
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	266.1	330.6
International | Fair value, measurements, recurring | Net Asset Value | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Net Asset Value | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Net Asset Value | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0	0.0
International | Fair value, measurements, recurring | Net Asset Value | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	42.7	36.0
International | Fair value, measurements, recurring | Net Asset Value | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	221.1	291.0
International | Fair value, measurements, recurring | Net Asset Value | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	2.3	3.6
International | Fair value, measurements, recurring | Net Asset Value | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	$ 0.0	$ 0.0