Related Party Transactions Other Than Board Compensation (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Executive Board and Supervisory Board Members
Related Party Transactions Other Than Board Compensation
Revenue from rendering of services	€ 0	€ 0
Companies controlled by members of the Supervisory Board Member
Related Party Transactions Other Than Board Compensation
Sale of products and services	9	37
Purchase of products and services	2	3
Sponsoring and other financial support	4	4
Amount owed to related parties	0	3
Amount owed from related parties	€ 0	28
Term of commitments	4 years
Commitments made by the entity	€ 14	191
Supervisory Board Members
Related Party Transactions Other Than Board Compensation
Amount owed to related parties	0	0
Services received	€ 2	€ 1

The amounts payable resulting from related party transactions. [Refer: Related parties [member]]

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The amounts receivable resulting from related party transactions. [Refer: Related parties [member]]

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- Definition

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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No definition available.

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The amount of outstanding commitments made by the entity in related party transactions. [Refer: Related parties [member]]

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The amount of revenue arising from the rendering of services in related party transactions. [Refer: Revenue; Related parties [member]]

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The amount of services received in related party transactions. [Refer: Related parties [member]]

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The periods of commitments to purchase further goods or services and to provide further sponsoring and other financial support, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of goods and services purchased by the entity in related party transactions.

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- Definition

The amount of sale of products and services to companies controlled by members of the Supervisory Board

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This amount of related-party sponsoring and financial support made by the entity.

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