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Combined Earnings Per Share - Summary of Computation of Earnings Per Share (Detail) - EUR (€) € / shares in Units, € in Millions, shares in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Combined EPS - Basic
Net profit attributable to shareholders' equity	€ 3,039	€ 3,110
Average number of combined share units	2,727.3	2,834.4
Combined EPS - basic	€ 1.11	€ 1.10
Combined EPS - Diluted
Net profit attributable to shareholders' equity	€ 3,039	€ 3,110
Adjusted average number of combined share units	2,737.3	2,845.7
Combined EPS - diluted	€ 1.11	€ 1.09
Underlying EPS
Net profit attributable to shareholder's equity	€ 3,039	€ 3,110
Post tax impact of non-underlying items attributable to shareholders' equity (see note 2)	287	96
Underlying profit attributable to shareholders' equity	€ 3,326	€ 3,206
Adjusted average number of combined share units (millions of units)	2,737.3	2,845.7
Underlying EPS - diluted	€ 1.22	€ 1.13

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- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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