Pension and Postretirement Benefit Plans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Balance at end of year	$ 305,481	[1]	$ 276,863	[1]
Pension
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning of year	397,184		393,794
Service cost	1,819		2,331		2,297
Interest cost	16,842		16,561		17,284
Actuarial (gain) loss	(30,755)		2,345
Currency translation, benefit obligation	861		678
Benefits paid	(17,004)		(16,227)
Medicare Part D reimbursement
Settlements			(767)
Administrative costs	(1,216)		(1,452)
Curtailments			(79)
Projected benefit obligation, end of year	367,731		397,184		393,794
Balance at beginning of year	276,863		243,324
Actual return on plan assets	28,813		33,946
Contributions	17,724		17,567
Benefits paid	(17,004)		(16,227)
Settlements paid			(767)
Currency translation, fair value of plan assets	301		472
Balance at end of year	305,481		276,863		243,324
Funded status, end of year	(62,250)		(120,321)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning of year	55,609		49,508
Service cost	663		704		479
Interest cost	2,707		2,122		2,054
Actuarial (gain) loss	(3,833)		6,161
Currency translation, benefit obligation
Benefits paid	(2,860)		(3,106)
Medicare Part D reimbursement	162		220
Settlements
Administrative costs
Curtailments
Projected benefit obligation, end of year	52,448		55,609		49,508
Balance at beginning of year
Actual return on plan assets
Contributions
Benefits paid
Settlements paid
Currency translation, fair value of plan assets
Balance at end of year
Funded status, end of year	$ (52,448)		$ (55,609)

[1] Information on asset categories described in notes (b)-(k) is derived from prospectuses and other material provided by the respective funds comprising the respective asset categories.