XML 129 R87.htm IDEA: XBRL DOCUMENT v3.19.1
Information by Geographic Area - Summary of Physical Location of Property, Plant and Equipment (Detail) - EUR (€)
€ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment € 1,666 € 1,517 € 1,477
United States [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 740 681  
France [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 613 586  
Germany [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 181 156  
Czech Republic [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment 84 65  
Other countries [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment € 48 € 29