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Earnings per share - Schedule of Computation of Earnings Per Share (Details) - EUR (€) € / shares in Units, € in Millions, shares in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
EPS – Basic
Net profit attributable to shareholders’ equity (€ million)	€ 3,548	€ 2,905
Average number of shares (in millions of shares)	2,523.9	2,557.3
EPS - basic (in euros per share)	€ 1.41	€ 1.14
EPS – Diluted
Net profit attributable to shareholders’ equity (€ million)	€ 3,548	€ 2,905
Diluted average number of shares (in millions of shares)	2,536.8	2,566.2
EPS - diluted (in euros per share)	€ 1.40	€ 1.13
Underlying EPS
Net profit attributable to shareholders’ equity (€ million)	€ 3,548	€ 2,905
Post-tax impact of non-underlying items attributable to shareholders’ equity (see note 2)	(14)	535
Underlying profit attributable to shareholders’ equity	€ 3,534	€ 3,440
Diluted average number of shares (in millions of shares)	2,536.8	2,566.2
Underlying EPS – diluted (in euros per share)	€ 1.39	€ 1.34

X

- 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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