Contingencies - Components of Recorded Liability Related to Claims and Contingencies (Detail) - USD ($) $ in Thousands	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Schedule of Claims and Contingencies [Line Items]
Other current liabilities	$ 32,409	$ 25,893	$ 35,573
Other liabilities	97,106	99,987	3,075
Total	129,515	125,880	38,648	$ 126,978
2009 RSA [Member]
Schedule of Claims and Contingencies [Line Items]
Total	115,930	116,923	31,832
Other claims and contingencies [Member]
Schedule of Claims and Contingencies [Line Items]
Total	$ 13,585	$ 8,957	$ 6,816