Tax Effects of Temporary Differences Representing Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets:
Accrued expenses	$ 205.3	$ 203.5
Net operating loss and tax credit carryforwards	140.1	132.0
Postretirement benefit plans	0.0	4.9
Allowance for losses on receivables	36.0	31.4
Goodwill and intangibles	10.0	18.7
Other	122.9	103.3
Deferred Tax Assets, Gross, Total	514.3	493.8
Valuation allowance	(102.1)	(118.5)
Deferred Tax Assets, Net of Valuation Allowance, Total	412.2	375.3
Liabilities:
Financial Services leasing depreciation	(765.1)	(777.5)
Depreciation and amortization	(168.0)	(159.4)
Postretirement benefit plans	(3.0)	0.0
Other	(46.1)	(28.9)
Deferred Tax Liability, Total	(982.2)	(965.8)
Net deferred tax liability	$ (570.0)	$ (590.5)