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Deferred tax assets and liabilities - Significant temporary differences (Details) - EUR (€) € in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Temporary differences |  |
Deferred tax liabilities before offsetting | € 10,668 | € 8,581
Deferred tax assets | (8,546) | (7,166)
Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (17,150) | (16,231)
Accumulated impairment |  |
Temporary differences |  |
Deferred tax assets | 8,604 | 9,065
Accelerated tax depreciation |  |
Temporary differences |  |
Deferred tax liabilities before offsetting | 7,346 | 6,171
Leasing |  |
Temporary differences |  |
Deferred tax liabilities before offsetting | 1,076 | 1,089
Leasing | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (1,091) | (1,113)
Derivatives |  |
Temporary differences |  |
Deferred tax liabilities before offsetting | 916 | 27
Derivatives | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (343) | (2)
Difference between the fair value and the carrying amount of assets acquired |  |
Temporary differences |  |
Deferred tax liabilities before offsetting | 408 | 415
Site restoration and abandonment (tangible assets) |  |
Temporary differences |  |
Deferred tax liabilities before offsetting | 166 | 199
Application of the weighted average cost method in evaluation of inventories |  |
Temporary differences |  |
Deferred tax liabilities before offsetting | 87 | 56
Unused tax losses | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (7,374) | (6,983)
Site restoration and abandonment (provisions for contingencies) | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (2,400) | (2,211)
Timing differences on depreciation and amortization | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (2,354) | (2,206)
Impairment losses | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (1,417) | (1,213)
Accruals for impairment losses and provisions for contingencies | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (1,095) | (1,371)
Over/Under lifting | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (219) | (211)
Employee benefits | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (155) | (213)
Unrealized intercompany profits | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | (71) | (117)
Other temporary differences |  |
Temporary differences |  |
Deferred tax liabilities before offsetting | 669 | 624
Other temporary differences | Deferred tax assets, gross |  |
Temporary differences |  |
Deferred tax assets | € (631) | € (591)

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- Definition The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2021-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2021-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph o -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_o&doctype=Standard -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 56 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_56&doctype=Standard -URIDate 2021-03-24 + Details
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