Accumulated Other Comprehensive Loss (Changes In Other Comprehensive Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	$ 1,773,949	$ 1,844,277
Total other comprehensive income, net of tax	7,633	93,445
Balance, end of period	1,797,611	1,995,949
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(629,684)	(500,049)
Other comprehensive income before reclassifications	1,783	97,383
Income tax (benefit) expense	(589)	(21,242)
Net other comprehensive income before reclassifications	1,194	76,141
Total reclassifications before tax	8,404	22,615
Income tax expense	(1,965)	(5,311)
Net reclassifications	6,439	17,304
Total other comprehensive income, net of tax	7,633	93,445
Balance, end of period	(622,051)	(406,604)
AOCI Attributable to Parent | Foreign currency contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	(2,453)	6,709
AOCI Attributable to Parent | Commodity contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	10	73
AOCI Attributable to Parent | Treasury Rate Locks
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	122	126
AOCI Attributable to Parent | Interest Rate Swap
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	606
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(49,608)	(21,852)
Other comprehensive income before reclassifications	606	6,915
Income tax (benefit) expense	(275)	0
Net other comprehensive income before reclassifications	331	6,915
Total reclassifications before tax	0	0
Income tax expense	0	0
Net reclassifications	0	0
Total other comprehensive income, net of tax	331	6,915
Balance, end of period	(49,277)	(14,937)
Derivative financial instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	1,785
Other comprehensive income before reclassifications	1,177
Income tax (benefit) expense	(314)
Net other comprehensive income before reclassifications	863
Total reclassifications before tax	(1,715)
Income tax expense	411
Net reclassifications	(1,304)
Total other comprehensive income, net of tax	(441)
Balance, end of period	1,344
Derivative financial instruments | Foreign currency contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	(2,453)
Derivative financial instruments | Treasury Rate Locks
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	122
Derivative financial instruments | Interest Rate Swap
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	606
Derivative financial instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period		(17,254)
Other comprehensive income before reclassifications		(5,906)
Income tax (benefit) expense		1,387
Net other comprehensive income before reclassifications		(4,519)
Total reclassifications before tax		6,908
Income tax expense		(1,624)
Net reclassifications		5,284
Total other comprehensive income, net of tax		765
Balance, end of period		(16,489)
Derivative financial instruments | Foreign currency contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax		6,709
Derivative financial instruments | Commodity contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	10	73
Derivative financial instruments | Treasury Rate Locks
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax		126
Pension and postretirement benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(581,861)	(460,943)
Other comprehensive income before reclassifications	0	96,374
Income tax (benefit) expense	0	(22,629)
Net other comprehensive income before reclassifications	0	73,745
Total reclassifications before tax	10,119	15,707
Income tax expense	(2,376)	(3,687)
Net reclassifications	7,743	12,020
Total other comprehensive income, net of tax	7,743	85,765
Balance, end of period	(574,118)	(375,178)
Pension and postretirement benefit plans - Prior service credits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	(1,078)	(566)
Pension and postretirement benefit plans - Actuarial losses
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Total reclassifications before tax	$ 11,197	$ 16,273