Income Taxes - Schedule of Components of Net Deferred Tax Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Accruals	$ 124.4	$ 139.1
Inventory	28.8	32.5
Pension and other postretirement benefits	78.5	81.7
Net operating losses	341.6	339.9
Foreign tax credits	155.9	133.3
Capital loss carryforward	211.8	15.2
Operating lease liabilities	172.3	0.0
Other	157.2	132.6
Total gross deferred tax assets	1,270.5	874.3
Less: valuation allowance	(270.5)	(195.0)
Net deferred tax assets after valuation allowance	1,000.0	679.3
Deferred tax liabilities:
Accelerated depreciation	(79.7)	(92.2)
Amortizable intangibles	(517.7)	(1,419.2)
Outside basis differences	(40.6)	(25.7)
Operating lease assets	158.1	0.0
Other	(53.3)	(48.9)
Total gross deferred tax liabilities	(849.4)	(1,586.0)
Net deferred tax assets (liabilities)	$ 150.6	183.3
Net deferred tax assets (liabilities)		$ (906.7)