Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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Notional maturities for all interest rate contracts after fiscal year five.

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Notional maturities for all interest-rate contracts during fiscal year five.

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Notional maturities for all interest-rate contracts during fiscal year four.

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Notional maturities for all interest-rate contracts for the remainder of the fiscal year (year one).

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Notional maturities for all interest-rate contracts during fiscal year three.

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Notional maturities for all interest-rate contracts during the next fiscal year (year two).

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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Nominal or face amount used to calculate payments on the derivative asset.

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-Name Accounting Standards Codification
-Topic 815
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Description of the relevant terms of the derivative. Includes the type of instrument, risk being hedged, notional amount, counterparty, inception date, maturity date, relevant interest rates, strike price, cap price, and floor price.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Derivative Financial Instruments - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets	$ 71,300,000		$ 118,400,000
Designated under hedge accounting
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets	$ 69,400,000		113,600,000
Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Maximum length of future cash flow hedges	4 years 4 months 24 days
Recognized gain and losses on the ineffective portion	$ 0		0
Accumulated net loss on derivative contracts included in accumulated other comprehensive loss expected to be recognized in the Consolidated Statements of Comprehensive Income in the following 12 months, net of tax	8,800,000
Losses reclassified out of AOCI into net income based on the probability that the original forecasted transaction would not occur	0		600,000
Interest-Rate Contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount of outstanding contracts	3,007,600,000
Notional maturities for interest-rate contracts 2017	551,600,000
Notional maturities for interest-rate contracts 2018	1,063,400,000
Notional maturities for interest-rate contracts 2019	907,800,000
Notional maturities for interest-rate contracts 2020	288,800,000
Notional maturities for interest-rate contracts 2021	196,000,000
Notional maturities for interest-rate contracts thereafter	0
(Income) Expense recognized in earnings	0	$ 0
Interest-Rate Contracts \| Financial Services \| Designated under hedge accounting \| Other Assets
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets	68,700,000		$ 109,700,000
Foreign-exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative notional amount outstanding	$ 624,200,000
Foreign-exchange contracts maturity period	Within one year
(Income) Expense recognized in earnings	$ (70,100,000)	$ (1,200,000)