XML 186 R144.htm IDEA: XBRL DOCUMENT v3.19.1
Financial Risk Management - Summary of Effect of Foreign Currency Derivatives Impacts and Commercial Transactions Exposures (Detail) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Realized gains / (losses) on foreign currency derivatives - net € 11 € (15) € (46)
Included in Unrealized (losses) / gains on foreign currency derivatives - net (3) 17 40
Derivatives that do not qualify for hedge accounting [member] | Other gains and losses [member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Realized gains / (losses) on foreign currency derivatives - net 9 (19) (46)
Included in Unrealized (losses) / gains on foreign currency derivatives - net (1) 16 40
Derivatives that qualify for hedge accounting [member] | Other gains and losses [member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Realized gains / (losses) on foreign currency derivatives - net (2) 3  
Realized gains / (losses) in ineffective portion of derivatives 0 0 0
Derivatives that qualify for hedge accounting [member] | Revenue [member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Realized gains / (losses) on foreign currency derivatives - net 4 1  
Included in Unrealized (losses) / gains on foreign currency derivatives - net (2) 1  
Derivatives that qualify for hedge accounting [member] | Other comprehensive income (loss) [member]      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Included in Unrealized (losses) / gains on foreign currency derivatives - net (23) 48 € (27)
(Losses) reclassified from cash flow hedge reserve to Consolidated Income Statement € (2) € (2)