Annual Maturities of Financial Services Borrowings (Detail) (Financial Services, USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Debt Instrument [Line Items]
2015	$ 4,129.2
2016	1,646.9
2017	1,817.5
2018	317.6
2019	320.4
Debt, Long-term and Short-term, Combined Amount, Total	8,231.6
Commercial Papers
Debt Instrument [Line Items]
2015	2,506.9
Debt, Long-term and Short-term, Combined Amount, Total	2,506.9
Notes Payable to Banks
Debt Instrument [Line Items]
2015	20.4
2016	34.0
2017	23.7
2018	37.4
2019	20.4
Debt, Long-term and Short-term, Combined Amount, Total	135.9
Medium-term Notes
Debt Instrument [Line Items]
2015	1,601.9
2016	1,612.9
2017	1,793.8
2018	280.2
2019	300.0
Debt, Long-term and Short-term, Combined Amount, Total	$ 5,588.8

Amount of debt maturing in the next fiscal year following the latest fiscal year.

No definition available.

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Amount of debt maturing in the fifth fiscal year following the latest fiscal year.

No definition available.

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Amount of debt maturing in the fourth fiscal year following the latest fiscal year.

No definition available.

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Amount of debt maturing in the third fiscal year following the latest fiscal year.

No definition available.

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Amount of debt maturing in the second fiscal year following the latest fiscal year.

No definition available.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

No definition available.

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