Acquisitions - Purchase consideration (Details) - Alcatel Lucent € / shares in Units, € in Millions	Jan. 04, 2016 EUR (€) € / shares
Business combinations
Share price \| € / shares	€ 6.58
Exchange offer ratio	0.55
Fair value of the purchase consideration
Alcatel Lucent shares or ADS's	€ 10,046
OCEANE convertible bonds	1,570
Consideration attributable to the vested portion of replacement share-based payment awards	6
Total consideration transferred, acquisition-date fair value	€ 11,622

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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The fair value, at acquisition date, of convertible bonds acquired.

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The fair value, at acquisition date, of shares acquired.

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The fair value, at acquisition date, of vested share-based payment awards acquired.

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Exchange offer ratio based on number of shares of acquirer to number of shares of acquiree.

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The share price.

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