Long-Term Debt Senior Notes (Detail) - USD ($)			3 Months Ended		12 Months Ended
	Sep. 09, 2013	Mar. 23, 2012	Mar. 31, 2014	[1]	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Loss on early extinguishment of debt			$ 1,500,000		$ 0	$ 1,474,000	$ 2,068,000
5½% Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 300,000,000
Debt Instrument Offering Price Percentage	100.00%
Redemption Price Percent If Change In Control Occurs	101.00%
5½% Senior Notes [Member] | Prior to August 1, 2016 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Date	Aug. 01, 2016
Maximum Redemption Percent Allowed And Limited To Proceeds From Equity Offering	35.00%
Debt Redemption Price Percent Of Principal Amount	105.50%
5½% Senior Notes [Member] | Prior to August 1, 2017 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Date	Aug. 01, 2017
Debt Redemption Price Percent Of Principal Amount	100.00%
5% Senior Notes due 2020 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 500,000,000
Debt Instrument Offering Price Percentage		100.00%
Redemption Price Percent If Change In Control Occurs		101.00%
5% Senior Notes due 2020 [Member] | Prior to April 01, 2016 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Date		Apr. 01, 2016
5% Senior Notes due 2020 [Member] | Prior to April 1, 2016 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Redemption Date		Apr. 01, 2016
Debt Redemption Price Percent Of Principal Amount		100.00%

[1] The first, second, third and fourth quarters of 2014 include rationalization charges of $1.6 million, $0.9 million, $2.5 million and $9.5 million, respectively, and (loss) income from operations in Venezuela of $(0.5) million, $(2.9) million, $0.8 million and $(0.5) million, respectively. The first quarter of 2014 includes a loss on early extinguishment of debt of $1.5 million.