Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets related to:
Expenses not yet deducted for tax purposes	$ 281,468	$ 254,684
Operating lease liabilities	303,400
Pension liability not yet deducted for tax purposes	261,909	277,929
Capital loss	18,317	11,944
Net operating loss	38,445	29,785
Net deferred tax assets, gross	903,539	574,342
Deferred tax liabilities related to:
Employee and retiree benefits	215,815	218,124
Inventory	93,440	95,280
Operating lease assets	295,109
Other intangible assets	333,935	296,736
Property, plant, and equipment	68,619	72,463
Other	39,149	32,978
Deferred tax liabilities, total	1,046,067	715,581
Net deferred tax liability before valuation allowance	(142,528)	(141,239)
Valuation allowance	(35,524)	(26,095)
Total net deferred tax liability	$ (178,052)	$ (167,334)