XML 124 R95.htm IDEA: XBRL DOCUMENT
v3.20.1

Segment Reporting - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2019 location area
Segment Reporting |
Number of areas Group companies are divided into | area | 4
Geographical information |
Number of geographical areas | location | 4

X
- Definition The number of areas Group companies are divided into. They include the industrial area, the commercial area, the services area and the research area. Within each of these areas, activities are organized based on the nature of the products and services manufactured and marketed. + References No definition available. + Details
Name: | grfs_GroupCompaniesNumberOfAreas
Namespace Prefix: | grfs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of geographical areas in which information is grouped. + References No definition available. + Details
Name: | grfs_NumberOfGeographicalAreas
Namespace Prefix: | grfs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfGeographicalAreasAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfOperatingSegmentsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration