Segment Information - Total Assets for Each Segment and Reconciling in Consolidated Financial Statements (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Jun. 30, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 3,784.8	$ 3,454.3
Softgel Technologies [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,534.7	1,631.8
Drug Delivery Solutions [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,632.1	1,639.0
Clinical Supply Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	635.5	596.2
Corporate and Eliminations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ (17.5)	$ (412.7)