SUPPLEMENTAL BALANCE SHEET INFORMATION - Components of Other Assets (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Net overfunded pension plans	$ 100.5	$ 100.6
Capitalized software	69.5	83.1
Judicial deposits	47.4	70.1
Long-term receivables	145.7	196.1
Trust assets associated with supplemental benefit plans	35.5	37.3
Other	18.8	27.6
Other assets	417.4	514.8
Property, plant and equipment, net	412.9	488.0
Tooling
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 8.0	$ 12.9