Goodwill and Identifiable Intangible Assets, Net - Summary of Goodwill Balances by Segment Reporting Structure (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)
Goodwill [Roll Forward]
Carrying Value, at beginning of period	$ 1,882.9
Acquisition and divestiture	49.4
Currency translation	7.5
Carrying Value, at end of period	1,939.8
Operating Segments | Food Care
Goodwill [Roll Forward]
Carrying Value, at beginning of period	510.8
Acquisition and divestiture	10.1
Currency translation	6.0
Carrying Value, at end of period	526.9
Operating Segments | Product Care
Goodwill [Roll Forward]
Carrying Value, at beginning of period	1,372.1
Acquisition and divestiture	39.3
Currency translation	1.5
Carrying Value, at end of period	$ 1,412.9