Annual Minimum Payments Due on Finance Receivables (Detail) - Financial Services - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	$ 8,797.7	$ 9,286.5
Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
2017	1,238.4
2018	1,030.4
2019	802.2
2020	557.8
2021	285.0
Thereafter	34.8
Financing Receivables	3,948.6
Finance Leases Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
2017	1,101.8
2018	882.0
2019	684.6
2020	446.5
2021	217.0
Thereafter	94.3
Financing Receivables	$ 3,426.2