Reconciliation of Segment Income from Operations to Income before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2017		Jun. 30, 2016	Jun. 30, 2017		Jun. 30, 2016
Segment Reporting [Abstract]
Total segment income from operations	$ 75,233	[1]	$ 67,651	$ 131,994	[1]	$ 125,096
Interest and other debt expense	33,582		16,883	56,677		33,339
Income before income taxes	$ 41,651		$ 50,768	$ 75,317		$ 91,757

[1] Income from operations for Metal Containers includes a $3.0 million charge for each of the three and six months ended June 30, 2017 related to the resolution of a past non-commercial legal dispute. Income from operations for Corporate includes costs attributed to announced acquisitions of $9.8 million and $23.0 million for the three and six months ended June 30, 2017, respectively.