Debt Under Vehicle Programs And Borrowing Arrangements - Additional Information (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2018	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	€ 150	€ 250	€ 400	€ 210	€ 290	€ 500