Income Taxes (Deferred Tax Liabilities and Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax liabilities:
Depreciation	$ (69,222)	$ (71,757)
Deferred profit (for tax purposes) on sale to finance subsidiary	(30,791)	(41,951)
Lease revenue and related depreciation	(174,083)	(149,176)
Intangible assets	(88,024)	(98,707)
Other	(24,941)	(34,425)
Gross deferred tax liabilities	(387,061)	(396,016)
Deferred tax assets:
Nonpension postretirement benefits	41,015	42,422
Pension	43,763	60,063
Inventory and equipment capitalization	2,735	6,042
Restructuring charges	2,944	5,064
Long-term incentives	12,929	11,517
Net operating loss	82,673	106,029
Tax credit carry forwards	64,430	64,148
Tax uncertainties gross-up	6,577	6,692
Other	38,247	46,623
Gross deferred tax assets	295,313	348,600
Less: Valuation allowance	(110,781)	(142,496)
Net deferred tax assets	184,532	206,104
Total deferred taxes, net	$ (202,529)	$ (189,912)

The sum of the tax effects as of the balance sheet date of the amount of excesses of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset and the tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance.

No definition available.