Income Taxes - Schedule of Components of Net Deferred Tax Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Accruals	$ 138	$ 124
Inventory	39	29
Pension and postretirement benefits	60	79
Net operating losses	350	342
Foreign tax credits	185	156
Capital loss carryforward	241	212
Operating lease liabilities	162	172
Other	158	157
Total gross deferred tax assets	1,333	1,271
Less valuation allowance	(213)	(271)
Net deferred tax assets after valuation allowance	1,120	1,000
Deferred tax liabilities:
Accelerated depreciation	(92)	(80)
Amortizable intangibles	(282)	(518)
Outside basis differences	(93)	(40)
Operating lease assets	(145)	(158)
Other	(84)	(53)
Total gross deferred tax liabilities	(696)	(849)
Net deferred tax assets	$ 424	$ 151