Other Noncurrent Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Other Liabilities [Line Items]
Benefit plan liabilities	$ 196,753	$ 193,046	$ 283,006
Noncurrent tax liabilities	143,191	186,055	213,917
Other	159,546	161,526	150,100
Total other noncurrent liabilities	$ 499,490	$ 540,627	$ 647,023