Quarterly Results of Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Quarterly Financial Information [Line Items]
Net sales	$ 858,803	[1]	$ 1,139,547	[1]	$ 821,611	[1]	$ 768,357	[1]	$ 835,908	[2]	$ 1,148,008	[2]	$ 822,224	[2]	$ 703,087	[2]	$ 3,588,318	$ 3,509,227	$ 3,071,545
Gross profit	109,414	[1]	178,771	[1]	115,329	[1]	114,045	[1]	116,781	[2]	182,954	[2]	116,893	[2]	101,962	[2]	517,559	518,590	472,429
Net income	$ 29,359	[1]	$ 78,657	[1]	$ 10,580	[1]	$ 32,750	[1]	$ 37,099	[2]	$ 78,756	[2]	$ 51,206	[2]	$ 26,112	[2]	$ 151,346	$ 193,173	$ 144,646
Basic net income per share	$ 0.42	[1],[3]	$ 1.13	[1],[3]	$ 0.15	[1],[3]	$ 0.47	[1],[3]	$ 0.53	[2],[3]	$ 1.13	[2],[3]	$ 0.73	[2],[3]	$ 0.37	[2],[3]	$ 2.18	$ 2.76	$ 1.91
Diluted net income per share	$ 0.42	[1],[3]	$ 1.13	[1],[3]	$ 0.15	[1],[3]	$ 0.47	[1],[3]	$ 0.53	[2],[3]	$ 1.12	[2],[3]	$ 0.73	[2],[3]	$ 0.37	[2],[3]	$ 2.17	$ 2.75	$ 1.89
Dividends per share	$ 0.12	[1]	$ 0.12	[1]	$ 0.12	[1]	$ 0.12	[1]	$ 0.11	[2]	$ 0.11	[2]	$ 0.11	[2]	$ 0.11	[2]	$ 0.48	$ 0.44	$ 0.42

[1] The first, second, third and fourth quarters of 2012 include rationalization charges of $3.6 million, $0.2 million, $2.0 million and $2.9 million, respectively. The first, second, third and fourth quarters of 2012 include plant start-up costs of $1.0 million, $1.9 million, $1.4 million and $2.1 million, respectively. The second and third quarters of 2012 include costs attributable to announced acquisitions of $0.7 million and $0.8 million, respectively. The second quarter of 2012 includes a loss on early extinguishment of debt of $38.7 million.

[2] The first, second, third and fourth quarters of 2011 include rationalization charges of $1.7 million, $2.4 million, $0.6 million and $2.9 million, respectively. The first quarter of 2011 includes costs attributable to announced acquisitions of $1.8 million. The second quarter of 2011 includes income of $27.0 million for proceeds received as a result of the termination of the merger agreement with Graham Packaging, net of costs associated with certain corporate development activities, and a charge for the resolution of a past product liability dispute of $3.3 million. The third quarter of 2011 includes a loss on early extinguishment of debt of $1.0 million.

[3] Net income per share data is computed independently for each of the periods presented. Accordingly, the sum of the quarterly earnings per share amounts may not equal the total for the year.