Goodwill - Schedule of Total Purchase Price and Provisional Allocation of Purchase Price to Assets and Liabilities Assumed (Detail) - USD ($) $ in Millions		6 Months Ended
	Dec. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Purchase price, net of cash acquired		$ 0.0	$ (1.8)
Huntsman [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	$ 199.2
Huntsman [Member] | Other Intangible Assets [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	33.5
Huntsman [Member] | Goodwill [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	68.1
Huntsman [Member] | Fixed Assets [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	92.7
Huntsman [Member] | Other Net Assets Acquired [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	$ 4.9