Segment Information - Assets and Revenues (Detail) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Net revenue		$ 616.9	$ 532.6	$ 483.7	$ 442.2	$ 532.2	$ 438.0	$ 454.9	$ 423.0	$ 2,075.4	$ 1,848.1	$ 1,830.8
Property, Plant and Equipment, Net	[1]	995.9				905.8				995.9	905.8
Softgel Technologies [Member]
Segment Reporting Information [Line Items]
Net revenue										855.3	775.0	787.5
Drug Delivery Solutions [Member]
Segment Reporting Information [Line Items]
Net revenue										910.1	806.4	798.3
Clinical Supply Services [Member]
Segment Reporting Information [Line Items]
Net revenue										348.8	307.5	288.4
United States [Member]
Segment Reporting Information [Line Items]
Net revenue										996.4	858.6	799.3
Property, Plant and Equipment, Net	[1]	588.0				538.9				588.0	538.9
Europe [Member]
Segment Reporting Information [Line Items]
Net revenue										797.4	733.2	795.4
Property, Plant and Equipment, Net	[1]	281.6				280.2				281.6	280.2
Rest of World [Member]
Segment Reporting Information [Line Items]
Net revenue										345.0	313.5	268.6
Property, Plant and Equipment, Net	[1]	126.3				86.7				126.3	86.7
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Net revenue										(63.4)	(57.2)	$ (32.5)
Property, Plant and Equipment, Net	[1]	$ 0.0				$ 0.0				$ 0.0	$ 0.0

[1] Long-lived assets include property and equipment, net of accumulated depreciation.