Changes In Equity And Comprehensive Income (Classification Of Accumulated Other Comprehensive Income Reflected On Consolidated Balance Sheets) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014		Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, beginning balance	$ (48,651)
Other comprehensive income before reclassifications	(2,511)
Amounts reclassified from accumulated other comprehensive income	1,508
Net current-period othre comprehensive income (loss)	(1,003)
Accumulated other comprehensive loss, ending balance	(49,654)		(48,651)
Changes in pension and post-retirement plan assets and benefit obligation, Tax benefit	52,286		53,373
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, beginning balance	(121,318)	[1]
Other comprehensive income before reclassifications	0	[1]
Amounts reclassified from accumulated other comprehensive income	1,508	[1]
Net current-period othre comprehensive income (loss)	1,508	[1]
Accumulated other comprehensive loss, ending balance	(119,810)	[1]
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, beginning balance	72,667
Other comprehensive income before reclassifications	(2,511)
Amounts reclassified from accumulated other comprehensive income	0
Net current-period othre comprehensive income (loss)	(2,511)
Accumulated other comprehensive loss, ending balance	$ 70,156

[1] Net of tax benefit of $52,286 and $53,373 for March 31, 2014 and December 31, 2013, respectively.