Tax Effects of Temporary Differences Representing Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Assets:
Accrued expenses	$ 179.4	$ 183.9
Net operating loss and tax credit carryforwards	112.1	102.1
Allowance for losses on receivables	30.7	35.6
Goodwill and intangibles	24.2	34.4
Other	102.0	89.2
Deferred Tax Assets, Gross, Total	448.4	445.2
Valuation allowance	(118.3)	(118.6)
Deferred Tax Assets, Net of Valuation Allowance, Total	330.1	326.6
Liabilities:
Financial Services leasing depreciation	(676.4)	(608.2)
Depreciation and amortization	(145.2)	(165.1)
Postretirement benefit plans	(8.0)	(39.5)
Other	(32.9)	(28.8)
Deferred Tax Liability, Total	(862.5)	(841.6)
Net deferred tax liability	$ (532.4)	$ (515.0)