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Related-party transactions - Text Details (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Related-party transactions [Line Items]      
Revenue from sale of goods, related party transactions € 204 € 158 € 232
Non-recourse third-party receivables sold from PMC 243 235 177
PMC [Member]      
Related-party transactions [Line Items]      
Revenue from sale of goods, related party transactions € 191 € 150 € 154
PMC [Member] | Philips Electronics North America Corporation [Member]      
Related-party transactions [Line Items]      
Proportion of ownership interest in associate 40.00%    
De Lage Landen Financial Services, Inc. (DLL) [Member]      
Related-party transactions [Line Items]      
Proportion of ownership interest in associate 60.00%    
Bottom of range [member]      
Related-party transactions [Line Items]      
Presumed significant influence, voting rights   20.00% 20.00%
Top of range [member]      
Related-party transactions [Line Items]      
Presumed significant influence, voting rights   50.00% 50.00%