Deferred income taxes result from temporary differences in the recognition of income and expense for financial and income tax reporting purposes, and differences between the fair value of assets acquired in business combinations accounted for as purchases for financial reporting purposes and their corresponding tax bases. Deferred income taxes represent future tax benefits or costs to be recognized when those temporary differences reverse. The categories of assets and liabilities that have resulted in differences in the timing of the recognition of income and expense at December 31, 2022 and 2021 were as follows:


(In millions)	2022		2021
Deferred income tax assets
Net operating loss tax carryovers	$	184.1	$	298.7
Pensions	51.7		94.3
Postretirement benefits other than pensions	51.5		69.8
Tax credits	42.0		40.2
Other items	95.6		103.9
Gross deferred income tax assets	424.9		606.9
Valuation allowance for deferred tax assets	(266.9)		(431.0)
Total deferred income tax assets	158.0		175.9
Deferred income tax liabilities
Bases of property, plant and equipment	122.2		114.0
Inventory valuation	17.1		32.5
Bases of amortizable intangible assets	9.0		18.0
Other items	23.0		24.7
Total deferred tax liabilities	171.3		189.2
Net deferred tax liability	$	(13.3)	$	(13.3)

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