Tax Effects of Temporary Differences Representing Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Assets:
Accrued expenses	$ 240.7	$ 215.9
Net operating loss and tax credit carryforwards	63.6	67.2
Postretirement benefit plans	44.9	43.3
Allowance for losses on receivables	41.9	43.0
Other	112.5	112.1
Deferred Tax Assets, Gross, Total	503.6	481.5
Valuation allowance	(32.9)	(30.3)
Deferred Tax Assets, Net of Valuation Allowance, Total	470.7	451.2
Liabilities:
Financial Services leasing depreciation	(810.4)	(817.2)
Depreciation and amortization	(277.9)	(289.2)
Other	(29.2)	(33.5)
Deferred Tax Liability, Total	(1,117.5)	(1,139.9)
Net deferred tax liability	$ (646.8)	$ (688.7)