Other Noncurrent Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Other Liabilities [Line Items]
Benefit plan liabilities	$ 191,817	$ 193,046	$ 279,005
Noncurrent tax liabilities	157,639	186,055	202,441
Other	168,843	161,526	155,107
Total other noncurrent liabilities	$ 518,299	$ 540,627	$ 636,553