Reclassifications Out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 20,568	$ 18,926	$ 60,896	$ 57,344
Tax benefit	70,869	47,483	144,014	85,600
Earnings from Continuing Operations	1,755	1,829	5,256	8,078
Pension and Postretirement Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings from Continuing Operations	1,547	1,636	4,643	7,506
Unamortized Value of Terminated Forward Starting Interest Rate Swap
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings from Continuing Operations	208	193	613	572
Reclassification out of Accumulated Other Comprehensive Income | Pension and Postretirement Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Settlement charge			59
Prior service credit	(404)	(468)	(1,209)	(1,407)
Actuarial loss	2,893	3,146	8,681	13,691
Tax benefit	(942)	(1,042)	(2,888)	(4,778)
Earnings from Continuing Operations	1,547	1,636	4,643	7,506
Reclassification out of Accumulated Other Comprehensive Income | Pension and Postretirement Benefit Plans | Cost of sale; Selling, General & Administrative Expenses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications out of accumulated other comprehensive loss before taxes	2,489	2,678	7,531	12,284
Reclassification out of Accumulated Other Comprehensive Income | Unamortized Value of Terminated Forward Starting Interest Rate Swap
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	344	318	1,016	942
Tax benefit	(136)	(125)	(403)	(370)
Earnings from Continuing Operations	$ 208	$ 193	$ 613	$ 572