Segments of Business (Details) (USD $)	3 Months Ended
	Mar. 31, 2012 segment	Mar. 31, 2011	Dec. 31, 2011
Segments of Business
Reporting Segments Number	2
Segment reporting information
Net Sales to Unaffiliated Customers:	$ 1,304,800,000	$ 1,324,400,000
Operating Profit and Pretax Profit:
Facility consolidation and other costs	(8,348,000)
Operating income	88,513,000	103,152,000
Interest expense	20,456,000	18,336,000
Other non-operating (income) expense, net	187,000	1,720,000
Income before income taxes	67,870,000	83,096,000
Total Assets	4,391,117,000		4,320,444,000
Reportable segment
Operating Profit and Pretax Profit:
Total Assets	4,073,600,000		3,989,700,000
Flexible Packaging segment
Segment reporting information
Net Sales to Unaffiliated Customers:	1,160,400,000	1,180,100,000
Intersegment Sales:	(900,000)	(700,000)
Operating Profit and Pretax Profit:
Operating profit	116,200,000	116,300,000
Operating income	107,900,000	116,300,000
Total Assets	3,754,200,000		3,687,600,000
Pressure Sensitive Materials segment
Segment reporting information
Net Sales to Unaffiliated Customers:	145,600,000	145,300,000
Intersegment Sales:	(300,000)	(300,000)
Operating Profit and Pretax Profit:
Operating profit	9,700,000	9,900,000
Total Assets	319,400,000		302,100,000
Unallocated amount to segment
Operating Profit and Pretax Profit:
General corporate expenses	(29,100,000)	(23,000,000)
Total Assets	$ 317,500,000		$ 330,700,000