REVENUES - Remaining Performance Obligations (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2021	Oct. 31, 2020
Remaining Performance Obligations
Remaining performance obligations amount	$ 639.4
Revenue Recognized	29.0
Contract assets	100.9
Contract liabilities	$ 111.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Remaining Performance Obligations
Contract assets		$ 94.3
Contract liabilities		$ 100.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Remaining Performance Obligations
Percentage of remaining performance obligation expected to be recognized	77.00%
Revenue remaining performance obligation expected timing of satisfaction, Period	12 months