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Treasury Risk Management - Summary of Financial Assets are Subject to Offsetting, Enforceable Master Netting Arrangements and Similar Agreements (Detail) - Derivative Financial Assets [Member] - EUR (€) € in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure of offsetting of financial assets [line items]
Gross amounts of recognised financial assets	€ 306	€ 253
Gross amounts of recognised financial assets set off in the balance sheet	(148)	(45)
Net amounts of financial assets presented in the balance sheet	158	208
Financial instruments	(91)	(130)
Cash collateral received	(16)	(24)
Net amount	€ 51	€ 54

X

- Definition

The amount of cash collateral received that is subject to an enforceable master netting arrangement or similar agreement and that is not set off against financial assets. [Refer: Financial assets]

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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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- Definition

The amount of financial instruments subject to an enforceable master netting arrangement or similar agreement that are not set off against financial assets. [Refer: Financial assets]

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The gross amount of recognised financial assets that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement. [Refer: Financial assets]

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The amount of financial liabilities set off against financial assets when an entity: (a) currently has a legally enforceable right to set off the recognised amounts; and (b) intends either to settle on a net basis or to realise the asset and settle the liability simultaneously. [Refer: Financial assets; Financial liabilities]

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The amount remaining after deducting the amounts subject to an enforceable master netting arrangement or similar agreement that were not set off against financial assets, from the net amount of financial assets subject to offsetting or subject to an enforceable master netting arrangement or similar agreement presented in the statement of financial position.

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- Definition

The net amount of financial assets that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement, presented in the statement of financial position. [Refer: Financial assets]

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