Goodwill and Identifiable Intangible Assets, net - Summary of Goodwill Balances by Reportable Segment (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)
Goodwill [Roll Forward]
Carrying Value at beginning of period	$ 1,939.8
Purchase price and other adjustments	(1.2)
Currency translation	(6.6)
Carrying Value at end of period	1,932.0
Food Care
Goodwill [Roll Forward]
Carrying Value at beginning of period	526.9
Purchase price and other adjustments	(0.6)
Currency translation	(4.3)
Carrying Value at end of period	522.0
Product Care
Goodwill [Roll Forward]
Carrying Value at beginning of period	1,412.9
Purchase price and other adjustments	(0.6)
Currency translation	(2.3)
Carrying Value at end of period	$ 1,410.0