COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Jun. 30, 2020	Dec. 31, 2021
Commitments and Contingencies [Line Items]
Contingent payments upon achievement of certain development and regulatory activities and commercial sales and licensing milestones			$ 788.5
Purchase commitment	$ 133.3		$ 133.3
Early Stage Development Program | Third Party
Commitments and Contingencies [Line Items]
Contingent payments upon achievement of certain development and regulatory activities and commercial sales and licensing milestones	$ 389.0	$ 225.0