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Financial Instruments - Summary of Fair Values of Financial Assets and Financial Liabilities (Detail) - EUR (€) € in Millions | Jun. 30, 2019 | Dec. 31, 2018 | [1] | Jun. 30, 2018 | [1]
--- | --- | --- | --- | --- | ---
Financial assets |  |  |
Cash and cash equivalents | € 3,911 | € 3,230 | € 3,991
Fair value [member] |  |  |
Financial assets |  |  |
Cash and cash equivalents | 3,911 | 3,230 | 3,991
Amortised cost | 499 | 629 | 632
Fair value through other comprehensive income | 327 | 329 | 288
Financial assets at fair value through profit and loss: |  |  |
Financial assets | 5,530 | 4,746 | 5,499
Financial liabilities |  |  |
Bank loans and overdrafts | (1,044) | (816) | (1,131)
Bonds and other loans | (26,787) | (23,691) | (27,842)
Lease liabilities | (1,967) | (1,981) | (2,112)
Derivatives | (464) | (402) | (542)
Other financial liabilities | (123) | (150) | (390)
Financial liabilities | (30,385) | (27,040) | (32,017)
Fair value [member] | Derivatives [member] |  |  |
Financial assets at fair value through profit and loss: |  |  |
Financial assets at fair value through profit or loss | 412 | 194 | 209
Fair value [member] | Other [member] |  |  |
Financial assets at fair value through profit and loss: |  |  |
Financial assets | 381 | 364 | 379
Carrying amount [member] |  |  |
Financial assets |  |  |
Cash and cash equivalents | 3,911 | 3,230 | 3,991
Amortised cost | 499 | 629 | 632
Fair value through other comprehensive income | 327 | 329 | 288
Financial assets at fair value through profit and loss: |  |  |
Financial assets | 5,530 | 4,746 | 5,499
Financial liabilities |  |  |
Bank loans and overdrafts | (1,041) | (814) | (1,128)
Bonds and other loans | (25,390) | (23,391) | (27,426)
Lease liabilities | (1,967) | (1,981) | (2,112)
Derivatives | (464) | (402) | (542)
Other financial liabilities | (123) | (150) | (390)
Financial liabilities | (28,985) | (26,738) | (31,598)
Carrying amount [member] | Derivatives [member] |  |  |
Financial assets at fair value through profit and loss: |  |  |
Financial assets at fair value through profit or loss | 412 | 194 | 209
Carrying amount [member] | Other [member] |  |  |
Financial assets at fair value through profit and loss: |  |  |
Financial assets | € 381 | € 364 | € 379
[1] | Restated following adoption of IFRS 16. Refer note 1 and note 9.

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_45&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B13_a&doctype=Appendix&seq=2 -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 8 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_8_a&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_25&doctype=Standard -URIDate 2018-03-16 + Details
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