Debt Under Vehicle Programs And Borrowing Arrangements - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
European Rental Fleet Securitization [Member]
Debt Instrument [Line Items]
Newly Issued European Credit Facility	€ 250	€ 400	€ 210	€ 290	€ 500

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.

No definition available.

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