PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - Pension Plan Assets Measured At Fair Value (Details) - Pensions - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total pension plan assets, percent	98.80%
U.S.
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	$ 517.5	$ 483.7
U.S. | Fair value, measurements, recurring
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	517.4	483.7
U.S. | Fair value, measurements, recurring | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	43.4	38.1
U.S. | Fair value, measurements, recurring | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	102.1	83.3
U.S. | Fair value, measurements, recurring | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	2.1	1.1
U.S. | Fair value, measurements, recurring | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	37.9	38.4
U.S. | Fair value, measurements, recurring | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	138.8	160.9
U.S. | Fair value, measurements, recurring | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	192.5	160.9
U.S. | Fair value, measurements, recurring | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.6	1.0
U.S. | Fair value, measurements, recurring | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0
U.S. | Fair value, measurements, recurring | Level 1
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	148.2	123.5
U.S. | Fair value, measurements, recurring | Level 1 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	43.4	38.1
U.S. | Fair value, measurements, recurring | Level 1 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	102.1	83.3
U.S. | Fair value, measurements, recurring | Level 1 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	2.1	1.1
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	0.6	1.0
U.S. | Fair value, measurements, recurring | Level 1 | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0
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 2 | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	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 | Level 3 | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0
U.S. | Fair value, measurements, recurring | Net Asset Value
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	369.2	360.2
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	37.9	38.4
U.S. | Fair value, measurements, recurring | Net Asset Value | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	138.8	160.9
U.S. | Fair value, measurements, recurring | Net Asset Value | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	192.5	160.9
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
U.S. | Fair value, measurements, recurring | Net Asset Value | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0
International
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	627.5	591.5	$ 521.2
International | Fair value, measurements, recurring
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	629.7	591.5
International | Fair value, measurements, recurring | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	40.5	66.3
International | Fair value, measurements, recurring | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	45.5	96.3
International | Fair value, measurements, recurring | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	143.4	208.4
International | Fair value, measurements, recurring | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	36.0	68.2
International | Fair value, measurements, recurring | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	291.0	98.3
International | Fair value, measurements, recurring | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	3.6	14.5
International | Fair value, measurements, recurring | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	69.7	39.5
International | Fair value, measurements, recurring | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0
International | Fair value, measurements, recurring | Level 1
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	299.1	410.5
International | Fair value, measurements, recurring | Level 1 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	40.5	66.3
International | Fair value, measurements, recurring | Level 1 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	45.5	96.3
International | Fair value, measurements, recurring | Level 1 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	143.4	208.4
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	69.7	39.5
International | Fair value, measurements, recurring | Level 1 | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0
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 2 | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	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 | Level 3 | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	0.0
International | Fair value, measurements, recurring | Net Asset Value
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	330.6	181.0
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	36.0	68.2
International | Fair value, measurements, recurring | Net Asset Value | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	291.0	98.3
International | Fair value, measurements, recurring | Net Asset Value | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	3.6	14.5
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
International | Fair value, measurements, recurring | Net Asset Value | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	$ 0.0