Income Taxes - Components of Deferred Income Tax Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:
AMT tax credit carryforwards	$ 31	$ 31
Post-retirement benefits other than pensions	43	49
Federal and foreign net operating loss carryforwards	25	18
State net operating loss carryforwards	7	7
Pension liability	74	143
Other deductible temporary differences	16	17
Less: valuation allowances	(18)	(95)
Deferred tax assets, net	178	170
Deferred tax liabilities:
Fixed asset basis difference	107	112
Inventory basis difference	129	130
Other intangibles	15	11
Deferred tax liabilities	251	253
Net deferred tax liability	$ (73)	$ (83)