Goodwill and Other Intangible Assets (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Changes in the carrying amount of goodwill
Reported balance at the beginning of the period	$ 1,028.8
Currency translation	7.7
Reported balance at the end of the period	1,036.5
USPackaging [Member]
Changes in the carrying amount of goodwill
Reported balance at the beginning of the period	632.4
Currency translation	0.4
Reported balance at the end of the period	632.8
GlobalPackaging [Member]
Changes in the carrying amount of goodwill
Reported balance at the beginning of the period	396.4
Currency translation	7.3
Reported balance at the end of the period	$ 403.7